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| www.fairchildsemi.com KM4100/KM4101 Low Cost, +2.7V and +5V, 260MHz Rail-to-Rail Amplifiers Features s s s General Description The KM4100 (single) and KM4101 (single with disable) are low cost, voltage feedback amplifiers. These amplifiers are designed to operate on +2.7V, +5V, or 2.5V supplies. The input voltage range extends 300mV below the negative rail and 1.2V below the positive rail. The KM4100 offers superior dynamic performance with a 260MHz small signal bandwidth and 150V/s slew rate. The combination of low power, high output current drive, and rail-to-rail performance make the KM4100 well suited for battery-powered communication/computing systems. The combination of low cost and high performance make the KM4100 suitable for high volume applications in both consumer and industrial applications such as wireless phones, scanners, and color copiers. Output Swing 2.7 s s s s s s s s 260MHz bandwidth Fully specified at +2.7V and +5V supplies Output voltage range: 0.036V to 4.953V; Vs = +5; RL = 2k Input voltage range: -0.3V to +3.8V; Vs = +5 150V/s slew rate 4.2mA supply current Power down to Is = 127A (KM4101) 60mA linear output current 90mA output short circuit current Directly replaces AD8051 and LM7131 in single supply applications Small package options (SOT-23, SOIC) Applications s s s s s s s s s KM4100/KM4101 Packages SOT23-5 (KM4100) Out -Vs +In 1 2 + Output Voltage (0.5V/div) A/D driver Active filters CCD imaging systems CD/DVD ROM Coaxial cable drivers High capacitive load driver Portable/battery-powered applications Twisted pair driver Video driver SOT23-6 (KM4101) +Vs Out -Vs 1 2 + Vs = +2.7V RL = 2k G = -1 5 6 5 4 +Vs DIS -In 0 Time (0.5s/div) - - 3 4 -In +In 3 SOIC (KM4100) NC -In +In -Vs 1 2 3 4 + SOIC (KM4101) NC +Vs Out NC NC -In +In -Vs 1 2 3 4 + 8 7 6 5 8 7 6 5 DIS +Vs Out NC REV. 1A February 2001 DATA SHEET KM4100/KM4101 KM4100/KM4101 Electrical Characteristics Parameters Case Temperature Frequency Domain Response -3dB bandwidth full power bandwidth gain bandwidth product Time Domain Response rise and fall time settling time to 0.1% overshoot slew rate Distortion and Noise Response 2nd harmonic distortion 3rd harmonic distortion THD input voltage noise input current noise DC Performance input offset voltage average drift input bias current average drift input offset current power supply rejection ratio open loop gain quiescent current quiescent current (disabled) Input Characteristics input resistance input capacitance input common mode voltage range common mode rejection ratio Disable Characteristics (KM4101) turn on time turn off time off isolation Output Characteristics output voltage swing linear output current short circuit output current power supply operating range G = +1, Vo = 0.05Vpp G = +2, Vo = 0.2Vpp G = +2, Vo = 2Vpp 0.2V step 1V step 0.2V step, 2.7V step, G = -1 1Vpp, 5MHz 1Vpp, 5MHz 1Vpp, 5MHz >1MHz >1MHz Conditions (Vs = +2.7V, G = 2, RL = 2k to Vs/2; unless noted) TYP +25C 215 85 36 86 3.7 40 9 140 86 85 76 16 1.3 -1.6 10 3 7 0 57 75 3.9 58 4.3 1.5 -0.3 to 1.5 87 150 25 75 0.023 to 2.66 0.025 to 2.653 0.1 to 2.6 0.065 to 2.55 0.3 to 2.325 60 55 90 2.7 2.5 to 5.5 8 8 1 52 65 5 100 Min & Max +25C MHz MHz MHz MHz ns ns % V/s dBc dBc dB nV/Hz pA/Hz mV V/C A nA/C A dB dB mA A M pF V dB ns ns dB V V V mA mA mA V 1 1 1 1 UNITS NOTES 1 2 2 2 2 2 2 2 DC DC, Vcm = 0V to Vs - 1.5 72 2 5MHz, RL = 100 RL = 10k to Vs/2 RL = 2k to Vs/2 RL = 150 to Vs/2 -40C to +85C 2 2 Min/max ratings are based on product characterization and simulation. Individual parameters are tested as noted. Outgoing quality levels are determined from tested parameters. NOTES: 1) Rf = 1k was used used for optimal performance. (For G = +1, Rf = 0) 2) 100% tested at +25C. Absolute Maximum Ratings supply voltage 0 to +6V maximum junction temperature +175C storage temperature range -65C to +150C lead temperature (10 sec) +300C operating temperature range (recommended) -40C to +85C input voltage range +Vs +0.5V; -Vs -0.5V internal power dissipation see power derating curves Package Thermal Resistance Package 5 lead SOT23 6 lead SOT23 8 lead SOIC JA 256C/W 230C/W 152C/W 2 REV. 1A February 2001 KM4100/KM4101 DATA SHEET KM4100/KM4101 Electrical Characteristics Parameters Case Temperature Frequency Domain Response -3dB bandwidth full power bandwidth gain bandwidth product Time Domain Response rise and fall time settling time to 0.1% overshoot slew rate Distortion and Noise Response 2nd harmonic distortion 3rd harmonic distortion THD input voltage noise input current noise DC Performance input offset voltage average drift input bias current average drift input offset current power supply rejection ratio open loop gain quiescent current quiescent current (disabled) Input Characteristics input resistance input capacitance input common mode voltage range common mode rejection ratio Disable Characteristics (KM4101) turn on time turn off time off isolation Output Characteristics output voltage swing linear output current short circuit output current power supply operating range G = +1, Vo = 0.05Vpp G = +2, Vo = 0.2Vpp G = +2, Vo = 2Vpp 0.2V step 2V step 0.2V step, 5V step, G = -1 2Vpp, 5MHz 2Vpp, 5MHz 2Vpp, 5MHz >1MHz >1MHz Conditions (Vs = +5V, G = 2, RL = 2k to Vs/2; unless noted) TYP +25C 260 90 40 90 3.6 40 7 150 70 78 68 16 1.3 1.4 10 3 7 0 57 78 4.2 127 4.3 1.5 -0.3 to 3.8 87 150 25 75 0.027 to 4.97 0.036 to 4.953 0.1 to 4.9 0.12 to 4.8 0.3 to 4.625 60 55 90 5 2.5 to 5.5 8 8 0.8 52 68 5.2 170 Min & Max +25C MHz MHz MHz MHz ns ns % V/s dBc dBc dB nV/Hz pA/Hz mV V/C A nA/C A dB dB mA A M pF V dB ns ns dB V V V mA mA mA V 1 1 1 1 UNITS NOTES 1 2 2 2 2 2 2 2 DC DC, Vcm = 0V to Vs - 1.5 72 2 5MHz, RL = 100 RL = 10k to Vs/2 RL = 2k to Vs/2 RL = 150 to Vs/2 -40C to +85C 2 2 Min/max ratings are based on product characterization and simulation. Individual parameters are tested as noted. Outgoing quality levels are determined from tested parameters. NOTES: 1) Rf = 1k was used used for optimal performance. (For G = +1, Rf = 0) 2) 100% tested at +25C. REV. 1A February 2001 3 DATA SHEET KM4100/KM4101 KM4100/KM4101 Performance Characteristics (Vs = +5V, G = 2, Rf = 2k, RL = 2k to Vs/2; unless noted) Non-Inverting Freq. Response Vs = +5V Inverting Freq. Response Vs = +5V Normalized Magnitude (1dB/div) Normalized Magnitude (1dB/div) G=2 Rf = 1k G = 10 Rf = 2k G=5 Rf = 2k G=1 Rf = 0 G = -2 Rf = 2k G = -1 Rf = 2k G = -10 Rf = 2k G = -5 Rf = 2k 0.1 1 10 100 0.1 1 10 100 Frequency (MHz) Non-Inverting Freq. Response Vs = +2.7 Frequency (MHz) Inverting Freq. Response Vs = +2.7 Normalized Magnitude (1dB/div) Normalized Magnitude (1dB/div) G=1 Rf = 0 G=2 Rf = 1k G = -2 Rf = 2k G = -1 Rf = 2k G = 10 Rf = 2k G=5 Rf = 2k G = -10 Rf = 2k G = -5 Rf = 2k 0.1 1 10 100 0.1 1 10 100 Frequency (MHz) Frequency Response vs. CL Frequency (MHz) Large Signal Frequency Response Magnitude (1dB/div) CL = 100pF Rs = 25 CL = 50pF Rs = 33 + 1k 1k Magnitude (1dB/div) Vo = 1Vpp Vo = 2Vpp Rs CL RL CL = 20pF Rs = 20 CL = 10pF Rs = 0 0.1 1 10 100 0.1 1 10 100 Frequency (MHz) Frequency Response vs. Temperature 100 90 Frequency (MHz) Input Voltage Noise Voltage Noise (nV/Hz) 1 10 Magnitude (0.5dB/div) 80 70 60 50 40 30 20 10 0 100 1k 10k 100k 1M Frequency (MHz) Frequency (Hz) 4 REV. 1A February 2001 KM4100/KM4101 DATA SHEET KM4100/KM4101 Performance Characteristics (Vs = +5V, G = 2, Rf = 2k, RL = 2k to Vs/2; unless noted) 2nd & 3rd Harmonic Distortion; Vs = +5V -20 -30 Vo = 2Vpp Rf = 1k 2nd RL = 150 3rd RL = 150 2nd & 3rd Harmonic Distortion; Vs = +2.7V -20 -30 Vo = 1Vpp Rf = 1k 3rd RL = 150 2nd RL = 150 Distortion (dB) Distortion (dB) -40 -50 -60 -70 -80 -90 0 -40 -50 -60 -70 -80 -90 2nd RL = 2k 3rd RL = 2k 2nd RL = 2k 3rd RL = 2k 5 10 15 20 0 5 10 15 20 Frequency (MHz) 2nd Harmonic Distortion vs. Vo -20 -30 Rf = 1k Frequency (MHz) 3rd Harmonic Distortion vs. Vo -20 Rf = 1k -30 Distortion (dB) -50 -60 -70 -80 -90 0.5 20MHz Distortion (dB) -40 -40 -50 20MHz 10MHz -60 -70 -80 -90 10MHz 5MHz 5MHz 1.0 1.5 2.0 2.5 0.5 1.0 1.5 2.0 2.5 Output Amplitude (Vpp) PSRR 0 -10 -50 -20 -40 Output Amplitude (Vpp) CMRR CMRR (dB) 1k 0.01 PSRR (dB) -30 -40 -50 -60 -70 -80 -60 -70 0.1 1 10 100 -90 0.01 0.1 1.0 10 100 Frequency (MHz) Open Loop Gain & Phase vs. Frequency 80 70 0.8 0.6 Frequency (MHz) Output Current Open Loop Gain (dB) Output Voltage (V) 60 50 40 30 20 10 0 -10 -20 0.01 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 -100 -50 0 50 100 Short circuit current +90mA Linear output current +60mA Phase (degrees) |Gain| 0 Phase -45 -90 -135 -180 0.1 1 10 100 Frequency (MHz) Output Current (mA) REV. 1A February 2001 5 DATA SHEET KM4100/KM4101 KM4100/KM4101 Performance Characteristics (Vs = +5V, G = 2, Rf = 2k, RL = 2k to Vs/2; unless noted) Small Signal Pulse Response Vs = +5V Output Voltage (0.05V/div) Output Voltage (0.05V/div) Time (20ns/div) Rf = 1k Small Signal Pulse Response Vs = +2.7V Rf = 1k Time (20ns/div) Large Signal Pulse Response Vs = +5V 2.7 Output Swing Output Voltage (0.5V/div) Output Voltage (0.5V/div) Rf = 1k Vs = +2.7V RL = 2k G = -1 0 Time (20ns/div) Time (0.5s/div) Enable/Disable Response Output Voltage (0.05V/div) Output Voltage (4mV/div) Vin = 0.2Vpp sinusoid with 0.1V offset CMIR 5V Disable Pulse 0V Output 0 Time (2s/div) -1 0 1 2 3 4 5 CMIR (1V/div) 6 REV. 1A February 2001 KM4100/KM4101 DATA SHEET Frequency Reponse vs. Rf G=2 RL = 2k Vs = +5V Rf = 2k Magnitude (1dB/div) General Description The KM4100/KM4101 are single supply, general purpose, voltage-feedback amplifiers fabricated on a complementary bipolar process using a patent pending topology. They feature a rail-to-rail output stage and are unity gain stable. Both gain bandwidth and slew rate are insensitive to temperature. The common mode input range extends to 300mV below ground and to 1.2V below Vs. Exceeding these values will not cause phase reversal. However, if the input voltage exceeds the rails by more than 0.5V, the input ESD devices will begin to conduct. The output will stay at the rail during this overdrive condition. The design uses a Darlington output stage. The output stage is short circuit protected and offers "soft" saturation protection that improves recovery time. The typical circuit schematic is shown in Figure 1. Rf = 1k 1 10 100 Frequency (MHz) Figure 2: Frequency Response vs. Rf Power Dissipation The maximum internal power dissipation allowed is directly related to the maximum junction temperature. If the maximum junction temperature exceeds 150C, some reliability degradation will occur. If the maximum junction temperature exceeds 175C for an extended time, device failure may occur. The KM4100/KM4101 are short circuit protected. However, this may not guarantee that the maximum junction temperature (+150C) is not exceeded under all conditions. Follow the maximum power derating curves shown in Figure 3 to ensure proper operation. Maximum Power Dissipation Maximum Power Dissipation (W) 2.0 +Vs 6.8F + In + Rg 0.01F Out Rf KM4100 1.5 SOIC-8 lead 1.0 Figure 1: Typical Configuration At non-inverting gains other than G = +1, keep Rg below 1k to minimize peaking; thus, for optimum response at a gain of +2, a feedback resistor of 1k is recommended. Figure 2 illustrates the KM4100/ KM4101 frequency response with both 1k and 2k feedback resistors. Enable/Disable Function (KM4101) The KM4101 offers an active-low disable pin that can be used to lower its supply current. Leave the pin floating to enable the part. Pull the disable pin to the negative supply (which is ground in a single supply application) to disable the output. During the disable condition, the nominal supply current will drop to below 127A and the output will be at high impedance with about 2pF capacitance. SOT23-6 lead SOT23-5 lead 0.5 0 -50 -30 -10 10 30 50 70 90 Ambient Temperature ( C) Figure 3: Power Derating Curves Overdrive Recovery For an amplifier, an overdrive condition occurs when the output and/or input ranges are exceeded. The recovery time varies based on whether the input or output is overdriven and by how much the ranges are exceeded. The KM4100/KM4101 will typically recover in less than 20ns from an overdrive condition. Figure 4 shows the KM4100 in an overdriven condition. REV. 1A February 2001 7 DATA SHEET Overdrive Recovery Input RL = 2k Vin =2Vpp G=5 Rf = 1k Output KM4100/KM4101 Refer to the evaluation board layouts shown in Figure 7 for more information. Evaluation Board Information The following evaluation boards are available to aid in the testing and layout of this device: Eval Board KEB002 KEB003 Description Products Input Voltage (0.5V/div) Single Channel, KM4100IT5, Dual Supply 5 & 6 lead SOT23 KM4101IT6 Single Channel, Dual Supply 8 lead SOIC KM4100IC8, KM4101IC8 Time (20ns/div) Figure 4: Overdrive Recovery Driving Capacitive Loads The Frequency Response vs. CL plot on page 4, illustrates the response of the KM4100 and KM4101. A small series resistance (Rs) at the output of the amplifier, illustrated in Figure 5, will improve stability and settling performance. Rs values in the Frequency Response vs. CL plot were chosen to achieve maximum bandwidth with less than 1dB of peaking. For maximum flatness, use a larger Rs. Evaluation board schematics and layouts are shown in Figure 6 and Figure 7. The KEB002 and KEB003 evaluation boards are built for dual supply operation. Follow these steps to use the board in a single supply application: 1. Short -Vs to ground 2. Use C3 and C4, if the -Vs pin of the KM4100 or KM4101 is not directly connected to the ground plane. + Rf Rg Rs CL RL Figure 5: Typical Topology for driving a capacitive load Layout Considerations General layout and supply bypassing play major roles in high frequency performance. Fairchild has evaluation boards to use as a guide for high frequency layout and to aid in device testing and characterization. Follow the steps below as a basis for high frequency layout: Include 6.8F and 0.01F ceramic capacitors Place the 6.8F capacitor within 0.75 inches of the power pin s Place the 0.01F capacitor within 0.1 inches of the power pin s Remove the ground plane under and around the part, especially near the input and output pins to reduce parasitic capacitance s Minimize all trace lengths to reduce series inductances s s Figure 6: Evaluation Board Schematic (SOIC pinout shown) 8 REV. 1A February 2001 KM4100/KM4101 DATA SHEET KM4100/KM4101 Evaluation Board Layout Figure 7a: KEB002 (top side) Figure 7b: KEB002 (bottom side) Figure 7c: KEB003 (top side) Figure 7d: KEB003 (bottom side) REV. 1A February 2001 9 DATA SHEET KM4100/KM4101 KM4100/KM4101 Package Dimensions SOT23-5 b C L e DATUM 'A' 2 C L E C L E1 e1 D C L C SYMBOL A A1 A2 b C D E E1 L e e1 MIN 0.90 0.00 0.90 0.25 0.09 2.80 2.60 1.50 0.35 MAX 1.45 0.15 1.30 0.50 0.20 3.10 3.00 1.75 0.55 0.95 ref 1.90 ref 0 10 NOTE: 1. All dimensions are in millimeters. 2 Foot length measured reference to flat foot surface parallel to DATUM 'A' and lead surface. 3. Package outline exclusive of mold flash & metal burr. 4. Package outline inclusive of solder plating. 5. Comply to EIAJ SC74A. 6. Package ST 0003 REV A supercedes SOT-D-2005 REV C. A A2 A1 SOT23-6 b C L e DATUM 'A' 2 C L E C L E1 e1 D C L C SYMBOL A A1 A2 b C D E E1 L e e1 MIN 0.90 0.00 0.90 0.25 0.09 2.80 2.60 1.50 0.35 MAX 1.45 0.15 1.30 0.50 0.20 3.10 3.00 1.75 0.55 0.95 ref 1.90 ref 0 10 NOTE: 1. All dimensions are in millimeters. 2 Foot length measured reference to flat foot surface parallel to DATUM 'A' and lead surface. 3. Package outline exclusive of mold flash & metal burr. 4. Package outline inclusive of solder plating. 5. Comply to EIAJ SC74A. 6. Package ST 0004 REV A supercedes SOT-D-2006 REV C. A A2 A1 SOIC D e C L ZD 7 SOIC-8 SYMBOL A1 B C D E e H h L A ZD A2 L MIN MAX 0.10 0.25 0.36 0.46 0.19 0.25 4.80 4.98 3.81 3.99 1.27 BSC 5.80 6.20 0.25 0.50 0.41 1.27 1.52 1.72 8 0 0.53 ref 1.37 1.57 C L E H Pin No. 1 B DETAIL-A h x 45 NOTE: DETAIL-A 1. All dimensions are in millimeters. 2. Lead coplanarity should be 0 to 0.10mm (.004") max. 3. Package surface finishing: (2.1) Top: matte (charmilles #18~30). (2.2) All sides: matte (charmilles #18~30). (2.3) Bottom: smooth or matte (charmilles #18~30). 4. All dimensions excluding mold flashes and end flash from the package body shall not exceed o.152mm (.006) per side(d). A A1 A2 C 10 REV. 1A February 2001 KM4100/KM4101 DATA SHEET Ordering Information Model KM4100 Part Number KM4100IC8 KM4100IC8TR3 KM4100IT5 KM4100IT5TR3 KM4101 KM4101IC8 KM4101IC8TR3 KM4101IT6 KM4101IT6TR3 Package SOIC-8 SOIC-8 Container Rail Reel Pack Qty 95 2500 <3000 3000 95 2500 <3000 3000 SOT23-5 Partial Reel SOT23-5 SOIC-8 SOIC-8 Reel Rail Reel SOT23-6 Partial Reel SOT23-6 Reel Temperature range for all parts: -40C to +85C DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICES TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. LIFE SUPPORT POLICY FAIRCHILD'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com (c) 2001 Fairchild Semiconductor Corporation |
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