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for price, delivery, and to place orders, please contact hittite microwave corporation: 2 elizabeth drive, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com 13 - 1 bias controllers - smt 13 HMC981LP3E v 01.0 411 general description active bias controller functional diagram typical applications HMC981LP3E is an active bias controller that automatically adjusts the gate voltage of an external amplifer to achieve constant bias current. it can be used to bias any enhancement and depletion type amplifers operating in class-a regime with drain voltages from 4v to 12v and drain currents up to 200ma, offering a complete biasing solution. HMC981LP3E achieves excellent bias stability over supply, temperature and process variations, and eliminates the required calibration procedures usually employed to prevent rf performance degradation due to such variations. the HMC981LP3E is housed in an rohs compliant 3x3 mm qfn leadless package with an exposed backside pad to improve thermal characteristics. ? microwave radio & vsat ? military & space ? test instrumentation ? fiber optic modulator driver biasing ? catv laser driver biasing ? cellular base station ? wireless infrastructure equipment features automatic gate voltage adjustment (no calibration required) supply voltage: 4v to 12v digital voltage: 3.3v to 5v controls both enhancement and depletion type devices adjustable drain current up to 200ma sink/source gate current capability optional internal negative voltage generation that can be disabled to use external negative rail fast enable/disable trigger-out output for daisy chain power-up and power-down sequencing 16 lead 3x3 mm smt package: 9 mm2
for price, delivery, and to place orders, please contact hittite microwave corporation: 2 elizabeth drive, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com 13 - 2 bias controllers - smt 13 electrical specifcations, t a = +25c, vdd=8v, vdig= 3.3v, depletion master unless otherwise noted HMC981LP3E v 01.0 411 active bias controller parameter symbol conditions min. ty p. max. units supply voltage vdd 4 12 v vdd quiescent current idd vdd = 4v en = vdig 7 ma en = gnd 3 ma vdd = 8v en = vdig 7. 5 ma en = gnd 4 ma vdig quiescent current idig vdig= 3.3 v 3 ma vdig= 5 v 5 ma negative voltage output vneg -2.5 v oscillator frequency fosc 300 khz voltage reference vref 1.42 v enable input threshold enthrs vinlow 1 v vinhigh 1. 4 v switch input threshold swthrs vinlow 1 v vinhigh 1. 4 v short circuit disable input threshold dscthrs vinlow 1 v vinhigh 1. 4 v vdrain characteristics drain current adjustment range idrain sw=gnd 20 80 ma sw=vdig 80 200 ma drain current change over digital voltage idrainv vdrain set to 8v, idrain set to 160 ma 0.4 %/v drain current change over temperature 0.02 %/c drain range vdrain 4 12 v vdrain change over temperature vdrain vdrain set to 8v, idrain set to 160 ma 1.5 %/c vneg characteristics negative voltage output vneg -2.5 v vneg current sink ineg vdd= 4v 0 8 ma vdd= 8v 0 15 ma vgate characteristics gate current supply ig -0.8 0.8 ma vgate low level vg_min vneg v vgate high level vg_max vneg+4.5 v vg2 characteristics vg2 current supply ig2 vg2<1.5v - 0.1 0.1 ma vg2>1.5v -1 1 ma vg2 adjustment range vg2 1 vdd-1.3 v vdig characteristics adjustment range vdig 3.3 5 v vdig quiescent current idig vdd= 8 v, vdig=en =3.3 v 3 ma sw characteristics internal switch resistance rds_on sw= gnd 10 ohm sw=vdig 5 ohm
for price, delivery, and to place orders, please contact hittite microwave corporation: 2 elizabeth drive, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com 13 - 3 bias controllers - smt 13 load regulation @ vdd=8v, sw=vdig=3.3v idrain vs. vdig [1][2] load regulation @ vdd=6v, vdig=3.3v, sw=gnd 4.5 5 5.5 6 6.5 20 30 40 50 60 70 80 +25c +85c -40c idrain (ma) vdrain (v) 6.5 7 7.5 8 8.5 80 100 120 140 160 180 200 +25c +85c -40c idrain (ma) vdrain (v) HMC981LP3E v 01.0 411 active bias controller vneg load regulation @ vdd=4v vneg line regulation vs. supply voltage -2.55 -2.53 -2.51 -2.49 -2.47 -2.45 4 6 8 10 12 +25c +85c -40c supply voltage (v) vneg (v) no load condition -2.7 -2.6 -2.5 -2.4 -2.3 0246810 +25c +85c -40c ineg (ma) vneg (v) vneg load regulation @ vdd=12v -2.7 -2.6 -2.5 -2.4 -2.3 0 4 8 12 16 +25c +85c -40c ineg (ma) vneg (v) 50 51 52 53 54 55 3.3 3.7 4.1 4.5 4.9 +25c +85c -40c vdig (v) idrain (ma) [1] idrain is set to 53 ma [2] hmc465lp5 is used as external amplifer
for price, delivery, and to place orders, please contact hittite microwave corporation: 2 elizabeth drive, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com 13 - 4 bias controllers - smt 13 enable waveform HMC981LP3E v 01.0 411 active bias controller -8 -6 -4 -2 0 2 4 6 8 024681012 en vdrain vg2 vneg vgate voltage (v) time (ms) disable waveform -8 -6 -4 -2 0 2 4 6 8 12 14 16 18 20 en vdrain vg2 vneg vgate voltage (v) time (ms) power up waveform -4 -2 0 2 4 6 8 0 10 20 30 40 50 vdd vdrain vdig vg2 vneg vgate voltage (v) time (ms) shutdown waveform -4 -2 0 2 4 6 8 0 20 40 60 80 100 vdd vdrain vdig vg2 vneg vgate voltage (v) time (ms) -2.8 -2.3 -1.8 -1.3 -0.8 -20 -10 0 10 20 0 0.5 1 1.5 2 vneg (v) ineg (ma) time (ms) -2.55 -2.525 -2.5 -2.475 -2.45 -2.425 -2.4 -15 -10 -5 0 5 10 15 0 0.5 1 1.5 2 vneg (v) ineg (ma) time (ms) vneg load transient vdd=4v vneg load transient vdd=6v
for price, delivery, and to place orders, please contact hittite microwave corporation: 2 elizabeth drive, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com 13 - 5 bias controllers - smt 13 HMC981LP3E v 01.0 411 active bias controller -3 -2.5 -2 -1.5 -1 -0.5 0 0.5 1 -1.25 -1 -0.75 -0.5 -0.25 0 0.25 0.5 0.75 1 1.25 +25c +85c -40c ig (ma) vgate (v) 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 vg2=0.9v vg2=1.78v vg2=2.74v vg2=3.71v ig2 (ma) vg2 (v) vgate load regulation @ vdd=6v vg2 load regulation @ vdd=6v
for price, delivery, and to place orders, please contact hittite microwave corporation: 2 elizabeth drive, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com 13 - 6 bias controllers - smt 13 outline drawing part number package body material lead finish msl rating package marking [1] HMC981LP3E rohs-compliant low stress injection molded plastic 100% matte sn msl1 [2] h981 xxxx [1] 4-digit lot number xxxx [2] max peak refow temperature of 260 c package information absolute maximum ratings [1] vdd 12v vg2_cont, vdrain -0.5v to vdd + 0.5v sw, en, cp_out, vgatefb, vnegfb, trig_out, disbl_sc, isense -0.5v to vdig + 0.5v vdig 5.5v vneg -4v to gnd vg2 -0.5v to vdd + 0.5v junction temperature 125 c continuous pdiss (t = 85 c) (derate 19.19 mw/ c above 85 c) 0.77 watts electrostatic sensitive device observe handling precautions thermal resistance (r th ) (junction to package bottom) 52.1 c/w storage temperature -65 to +150 c operating temperature -40 to +85 c esd sensitivity (hbm) class 1b note that there are two different voltage domains on HMC981LP3E; a high voltage domain vdd, and a low voltage domain vdig. take necessary precautions not to violate abs max ratings of each subdomains. HMC981LP3E v 01.0 411 active bias controller notes: 1. package body material: low stress injection molded plastic silica and silicon impregnated. 2. lead and ground paddle material: copper alloy. 3. lead and ground paddle plating: 100% matte tin. 4. dimensions are in inches [millimeters]. 5. lead spacing tolerance is non-cumulative. 6. characters to be helvetica medium, .025 high, white ink, or laser mark located approx. as shown. 7. pad burr length shall be 0.15mm max. pad burr height shall be 0.05mm max. 8. package warp shall not exceed 0.05mm 9. all ground leads and ground paddle must be soldered to pcb rf ground. 10. refer to hittite application note for suggested pcb land pattern.
for price, delivery, and to place orders, please contact hittite microwave corporation: 2 elizabeth drive, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com 13 - 7 bias controllers - smt 13 pin descriptions pin number function description interface schematic 1, 5 vdd, vdig bias supply pin. connect supply voltage to this pin with appropriate fltering. 2 vg2cont control voltage of the vg2. use a resistor divider between vdd and gnd to set the voltage. vg2 is typically 1.3v lower than the vg2cont 10 vg2 second gate control. 3 sw internal switch resistance control pin. if left foating, vsw defaults to high. 4 en enable pin. system is enabled when ven is high (vdig). if left foating, ven defaults to high (enabled). 14 disblsc disables short circuit lock down when pulled to ground. leave it foating to enable short circuit lock down. 6 cpout negative voltage generator charge pump output. negative voltage generator needs a fying capacitor, a reservoir capacitor and two diodes to operate. please refer to the application schematic for more info. 7 vgatefb control pin for vgatefb. float vgatefb when a depletion mode transistor is biased. selects the mode of operation along with vnegfb pin. for detailed usage please refer to the table 2. 8 vnegfb feedback (control) pin for negative voltage generator charge pump. float to activate the negative voltage generator / sort to gnd to disable the negative voltage generator. 9 vneg negative input to the chip. should be supplied with cpout when negative voltage generator is enabled, or connect to external vss when negative voltage generator is enabled. for detailed usage please refer to the negative voltage generator section. HMC981LP3E v 01.0 411 active bias controller
for price, delivery, and to place orders, please contact hittite microwave corporation: 2 elizabeth drive, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com 13 - 8 bias controllers - smt 13 pin number function description interface schematic 11 vgate gate control pin for external amplifer. connect to the gate (base) of the external amplifer. in order to guarantee stability,a 10f capacitor should be connected between the gate (base) terminal of the external amplifer and gnd as close to the amplifer as possible. 12 vdrain drain voltage. should be connected to the supply terminal of the external amplifer. a minimum 100 nf capacitor has to be placed close to the external amplifer to improve load regulation. 13 trigout trigger out signal. generates a high (3.5v) signal when the active bias system stabilizes. this signal can be used to trigger next device (enable) if more than one HMC981LP3E is used in a daisy chain. 15 isense to adjust the bias current of the external amplifer connect a resistor (rsense) from isense pin to gnd. use eqn.2 to determine the required rsense value. 16 vref 1.5v reference voltage. 0.1uf or greater capacitor to gnd is needed for noise fltering. pin descriptions (continued) HMC981LP3E v 01.0 411 active bias controller
for price, delivery, and to place orders, please contact hittite microwave corporation: 2 elizabeth drive, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com 13 - 9 bias controllers - smt 13 evaluation board circuit HMC981LP3E v 01.0 411 active bias controller notes: [1] a variable resistor is assembled on r10 slot to adjust bias current for evaluating various different amplifers without soldering.
for price, delivery, and to place orders, please contact hittite microwave corporation: 2 elizabeth drive, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com 13 - 10 bias controllers - smt 13 evaluation pcb careful pcb layout is critical to achieve stable and low noise operation. the negative voltage generator charge pump stage requires particular attention. list of materials for evaluation pcb eval01-HMC981LP3E [1] item description tp1-10 test point c1 4.7 f capacitor, 1210 pkg. c2, c4, c8 10 nf capacitor, 0402 pkg. c5 1 f capacitor, 0603 pkg. c6 10 f capacitor, 0603 pkg. c7 0.1 f capacitor, 0402 pkg. d1 dual series shottky diode, bat54slt1 r1 10k ohm resistor, 0402 pkg. r2 4.02k ohm resistor, 0402 pkg. r10 trim potentiometer u1 HMC981LP3E active bias controller pcb [2] 600-00099-00-1 evaluation pcb [1] reference this number when ordering complete evaluation pcb [2] circuit board material: fr4 HMC981LP3E v 01.0 411 active bias controller
for price, delivery, and to place orders, please contact hittite microwave corporation: 2 elizabeth drive, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com 13 - 11 bias controllers - smt 13 application notes detailed description the HMC981LP3E is a fully-integrated active bias controller (abc) that automatically adjusts the gate voltage of amplifers operating in the class-a regime. with an internal feedback the automatic gate voltage control achieves constant quiescent bias through the amplifer under bias, independent of temperature and amplifer threshold variations. the quiescent current is adjusted with a resistor connected externally. the HMC981LP3E employs an integrated control circuitry to achieve safe power-up and power-down sequencing of the targeted amplifer. the HMC981LP3E can provide auto-bias solution virtually any amplifer in the market (both enhancement and depletion type) with a quiescent current of up to 200 ma and a supply voltage of up to 12v. the HMC981LP3E has an integrated negative voltage generator to synthesize negative voltages required to drive depletion mode amplifers. if an external negative supply is already available or an enhancement mode device is targeted, the negative voltage generator can be disabled. the HMC981LP3E achieves excellent bias stability over supply and temperature variations with low supply voltage down to 4v. the gate control can both sink and source current (0.8 ma) to achieve constant bias current over input power variations applied to the amplifer. the HMC981LP3E also generates a second gate voltage (vg2). vg2 can be adjusted through a resistor divider connected to vdd for amplifers which require second gate voltage. the HMC981LP3E ensures the protection of the external amplifer during turn on/off by adjusting the sequence of vdrain, vgate and vg2 outputs. HMC981LP3E controls the bias current of the amplifer under bias with the gate control driver. the current passing through the amplifer is continuously sampled and is used to control the vgate voltage connected to the gate of the amplifer. the HMC981LP3E employs a sw pin to control rds_on resistance of the internal switch between vdd and vdrain. refer to the section under the supply and drain voltage section for details. the HMC981LP3E has a built-in short circuit protection feature to protect both itself and the amplifer under bias against short circuit conditions at the vdrain output. refer to the section under the short circuit protection section for details. digital power supply (vdig) the HMC981LP3E requires an external low voltage bias rail (3.3v to 5.0v). vdig powers the internal logic circuitry. vdig draws an average of 3 ma from a 3.3v. vdig can accept voltages up to 5.0v. supply and drain voltage (vdd and vdrain) the vdd supply to the HMC981LP3E is directly connected to the vdrain output through an internal mosfet switch. this internal mosfet is controlled through power-up sequencing which ensures that no voltage is applied to drain of the external amplifer until the gate voltage is pulled down to vneg(ensuring external amplifer is pinched-off). the vdrain output of the HMC981LP3E should be connected to the drain (collector) of the amplifer under bias for the active bias control feedback and power-up/down sequencing to work. HMC981LP3E v 01.0 411 active bias controller
for price, delivery, and to place orders, please contact hittite microwave corporation: 2 elizabeth drive, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com 13 - 12 bias controllers - smt 13 there will be a voltage drop from vdd to vdrain due to fnite rds_on resistance of the internal switch. to compensate for this voltage drop choose the vdd value as shown in equation (1). vdd = vdrain + idrain x rds_on (1) where vdrain is the supply voltage of the external amplifer and idrain is the desired constant bias current through the external amplifer. note that rds_on resistance of the internal fet switch can be adjusted through sw pin. rds_on is typically equal to 5 ohms when sw is pulled up to vdig, and is typically equal to 10 ohms when sw is pulled down to gnd. if sw is left foating, it is pulled up to vdig through an internal weak pull-up. recommended settings for the sw position are given in table-1. not using the HMC981LP3E in the recommended settings will increase the power dissipation of the part and may increase the part-to-part variation. negative voltage generator (vnegout) the HMC981LP3E has an internally regulated charge pump block to generate negative voltage (vnegout) required for depletion mode devices. the HMC981LP3E generates -2.5v at the vnegout output in default confguration. it requires two diodes and two capacitors connected externally as shown in the sample application schematics. the HMC981LP3E is designed to reject the ripple on the vnegout by isolating vnegout from the vgate. the nega - tive voltage is only required for depletion mode devices, and it can be disabled through the vgatefb and vnegfb pins. where an enhancement device is targeted or a negative supply is already available in the system, simply con - nect the available negative supply to the vneg pin. see table-2 for detail on how to set this operation mode. HMC981LP3E v 01.0 411 active bias controller table 1. recommended current range confguration current range (ma) condition rds_on (ohm) 20 to 80 sw=gnd 10 80 to 200 sw=vdig 5 enable/disable (en) the active bias control loop is enabled when en is pulled up to vdig, and it is disabled when it is pulled down to gnd. if en is left foating HMC981LP3E is enabled through an internal weak pull-up. note that vneg operation is independent of en condition. en signal controls the operation of only vgate, vg2 and vdrain outputs. when en pulled down to gnd, the HMC981LP3E discharges vdrain and vg2 down to gnd and it pulls the vgate down to vneg. please see the active bias control loop section for detailed explanation. active bias control loop the HMC981LP3E regulates the bias current (idrain) of the amplifer under bias through vgate output connected to the gate of the external amplifer. in this closed loop operation the current passing through the amplifer under bias is sampled and is used to adjust vgate to achieve constant quiescent bias through the external amplifer. the HMC981LP3E continuously compensates for any supply, temperature, process variations and threshold drifts due to aging. the part-to-part, temperature, and supply variation of the HMC981LP3E is excellent. thus, by using an accurate sense resistor connected to the isense pin, expensive calibration procedures in high volume production could be avoided.
for price, delivery, and to place orders, please contact hittite microwave corporation: 2 elizabeth drive, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com 13 - 13 bias controllers - smt 13 HMC981LP3E v 01.0 411 active bias controller the gate control of the HMC981LP3E is designed to both sink and source current in to the gate of the targeted ampli - fer (at least 0.8 ma). this unique feature is important to achieve nearly constant quiescent bias through the amplifer under varying gate current at different input power values. the bias current passing through the external amplifer can be adjusted with rsense, where rsense is the r10 connected from isense to gnd. use the relation given in equation (2) to set the desired bias current through the external amplifer. idrain=32/rsense (a) (2) self protection feature due to the small resistance of the internal switch fet a large amount of current may fow through the HMC981LP3E. HMC981LP3E limits the maximum current to protect itself under such fault conditions, by turnung of vdrain and vgate. the HMC981LP3E will remain in this protection mode until a full power-cycle or enable/disable cycle is applied. vneg fault detection feature in depletion mode operation vneg is continuously monitored against short circuit fault to gnd. if vneg rises above a preset value (typically -1v) the system and the external amplifer are disabled by pulling vdrain and vg2 to gnd and vgate to vneg. the system will stay in this stand-by mode until short fault at vneg is fxed. power-up and enable sequencing to ensure the protection of the external amplifer, the HMC981LP3E provides a power-up sequence for enabling active bias control loop. during start-up vdrain and vg2 are kept at gnd while vgate is taken to the most negative supply available (vgate=vneg). this ensures that external amplifer is completely pinched-off before vdrain is applied. when en signal is received, vdrain is applied and the active bias loop is enabled. after the vdrain is applied, vg2 is generated. the fnal phase of the power-up sequence is completed by increasing the vgate linearly until the set idrain value is achieved. for power-down and disabling the same sequencing is applied in the reverse order. daisy-chain operation HMC981LP3E produces a trigger out signal (trigout pin#13) when vdrain output is enabled. this trigger signal can be used to enable additional HMC981LP3E chips in a chain of amplifers. the triggering sequence can be routed in any way, from input to output, or from output to input depending on the use. figure-1 presents a sample use of three HMC981LP3Es in an amplifcation chain. please note that, only one of the HMC981LP3E is used to generate the negative voltage and the remaining HMC981LP3E is set to receive external negative voltage (which is provided from the master HMC981LP3E). generating negative voltage from a single HMC981LP3E reduces the number of the components in the system, and decreases the over all current consumption.. please note that, to ensure proper start-up, the system enable signal should be applied to the chip that has the negative voltage generator.
for price, delivery, and to place orders, please contact hittite microwave corporation: 2 elizabeth drive, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com 13 - 14 bias controllers - smt 13 HMC981LP3E v 01.0 411 active bias controller figure 1. daisy chain operation operation modes HMC981LP3E can be confgured to bias both enhancement and depletion mode external amplifers. the mode of operation can be selected by setting two pins (vnegfb, vgatefb) as tabulated in table-2. the connection to the vnegin should be adjusted accordingly. in order not to bias external amplifer in a wrong region, please make sure that the correct mode of operation is selected before powering up the HMC981LP3E. the HMC981LP3E does not allow the internal negative voltage generator to work if an enhancement mode is selected. therefore, if vnegfb is left foating while vgatefb is grounded, HMC981LP3E will stay in standby mode. please note that the external negative voltage should be between -2.5v to -3.5v for HMC981LP3E to operate. if your application requires negative voltages outside this range please contact hittite application support. table 2. mode selection vnegfb vgatefb vnegin description mode1 (depletion/master mode) float f lo at connected to vnegout depletion mode transistor. internal negative voltage generator is active and generates -2.5v. sample application schematic given shown in fig.2a. mode2 (depletion/slave mode) gnd f lo at connected to external vss depletion mode transistor. internal negative voltage generator is disabled. an external negative voltage less than -2.3v should be connected to vnegin. sample application schematic given shown in fig.2b. --- float gnd n/a not allowed. HMC981LP3E stays in standby. mode3 (enhancement mode) gnd gnd connected to gnd enhancement mode transistor. internal negative voltage generator is disabled. sample application schematic given shown in fig.2c.
for price, delivery, and to place orders, please contact hittite microwave corporation: 2 elizabeth drive, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com 13 - 15 bias controllers - smt 13 HMC981LP3E v 01.0 411 active bias controller figure 2a. depletion/master mode amplifer typical application circuit (mode 1) figure 2b. depletion/slave mode amplifer typical application circuit (mode 2)
for price, delivery, and to place orders, please contact hittite microwave corporation: 2 elizabeth drive, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com 13 - 16 bias controllers - smt 13 HMC981LP3E v 01.0 411 active bias controller figure 2c. enhancement mode amplifer typical application circuit (mode 3) table 3 - list of bias settings for various hittite amplifers hittite part number vdrain (v) vdd (v) idrain (ma) rsense (kohm) r2 (kohm) r1 (kohm) vg2 (v) lnas hmc-alh140 4 4.60 60 0.53 open open - hmc-alh216 4 4.45 90 0.36 open open - hmc-alh244 4 4.45 45 0.71 open open - hmc-alh310 [1] 2.5 3.02 [1] 52 0.62 open open - hmc-alh311 [1] 2.5 3.04 [1] 54 0.59 open open - hmc-alh313 [1] 2.5 3.02 [1] 52 0.62 open open - hmc-alh382 [1] 2.5 3.14 [1] 64 0.50 open open - hmc-alh435 5 5.30 30 1.07 5.60 5 1. 5 hmc-alh444 5 5.55 55 0.58 5.09 5 1. 5 hmc-alh476 4 4.45 90 0.36 open open - hmc490 5 6.00 200 0.16 open open - hmc490lp5 5 6.00 200 0.16 open open - hmc504lc4b 4 4.45 90 0.36 open open - hmc594 6 6.50 100 0.32 open open - hmc594lc3b 6 6.50 100 0.32 open open - hmc609 6 6.85 170 0.19 open open - hmc609lc4 6 6.85 170 0.19 open open - hmc752lc4 [1] 3 3.70 [1] 70 0.46 open open - hmc753lp4e 5 5.55 55 0.58 5.09 5 1. 5 hmc772lc4 4 4.45 45 0.71 open open - linear & power hmc-abh209 5 5.80 80 0.40 open open - hmc-abh264 5 5.60 120 0.27 open open - hmc-auh317 4 4.80 160 0.20 open open - [1] for applications below 4v supply please contact factory.
for price, delivery, and to place orders, please contact hittite microwave corporation: 2 elizabeth drive, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com 13 - 17 bias controllers - smt 13 HMC981LP3E v 01.0 411 active bias controller hittite part number vdrain (v) vdd (v) idrain (ma) rsense (kohm) r2 (kohm) r1 (kohm) vg2 (v) hmc-auh318 4 4.80 160 0.20 open open - hmc-auh320 4 4.65 130 0.25 open open - hmc442 5 5.43 85 0.38 open open - hmc442lc3b 5 5.42 84 0.38 open open - hmc442lm1 5 5.43 85 0.38 open open - hmc499 5 6.00 200 0.16 open open - hmc499lc4 5 6.00 200 0.16 open open - wideband (distributed) hmc-alh482 4 4.45 45 0.71 open open - hmc-auh232 5 5.90 180 0.18 4.52 5 1. 5 hmc-auh249 5 6.00 200 0.16 4.38 5 1. 5 hmc-auh312 8 8.60 60 0.53 2.82 5 1. 8 hmc460 8 8.60 60 0.53 open open - hmc460lc5 8 8.75 75 0.43 open open - hmc463 5 5.60 60 0.53 open open - hmc463lh250 5 5.60 60 0.53 open open - hmc463lp5 5 5.60 60 0.53 open open - hmc465 8 8.80 160 0.20 2.33 5 1. 5 hmc465lp5 8 8.80 160 0.20 2.33 5 1. 5 hmc562 8 8.80 80 0.40 open open - hmc633 5 5.90 180 0.18 open open - hmc633lc4 5 5.90 180 0.18 open open - hmc634 5 5.90 180 0.18 open open - hmc634lc4 5 5.90 180 0.18 open open - hmc-930 10 10.88 175 0.18 3.95 5 3.5 microwave & optical drivers hmc870lc5 7 7.83 165 0.19 open open - hmc871lc5 8 8.38 75 0.43 open open - table 3 - list of bias settings for various hittite amplifers (continued)

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