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TSV621 Rail-to-rail input/output 29 A 420 kHz CMOS operational amplifiers Features Low supply voltage: 1.5 V-5.5 V Rail-to-rail input and output Low input offset voltage: 800 V max (A version) Low power consumption: 29 A typ Gain bandwidth product: 420 kHz typ Unity gain stability Micropackages: SC70-5, SOT23-5 Low input bias current: 1 pA typ Extended temperature range: -40 to +125 C 4 kV HBM In+ 1 VDD 2 In- 3 5 VCC + _ 4 Out TSV621ICT/ILT SC70-5/SOT23-5 This operational amplifier is unity gain stable for capacitive loads up to 100 pF. The device is internally adjusted to provide very narrow dispersion of AC and DC parameters, especially power consumption, product gain bandwidth and slew rate. The TSV621 presents a high tolerance to ESD, sustaining 4 kV for the human body model. Additionally, the TSV621 is offered in SC70-5 and SOT23-5 micropackages, with extended temperature ranges from -40 C to +125 C. All these features make the TSV621 ideal for sensor interfaces, battery-supplied and portable applications, as well as active filtering. Applications Battery-powered applications Portable devices Signal conditioning Active filtering Medical instrumentation Description The TSV621 is a single operational amplifier offering low voltage, low power operation and railto-rail input and output. With a very low input bias current and low offset voltage (800 V maximum for the A version), the TSV621 is ideal for applications that require precision. The device can operate at a power supply ranging from 1.5 to 5.5 V, and therefore suits battery-powered devices and extends battery life. This product features an excellent speed/power consumption ratio, offering a 420 kHz gain bandwidth while consuming only 29 A at a 5-V supply voltage. January 2009 Rev 1 1/18 www.st.com 18 Absolute maximum ratings and operating conditions TSV621 1 Absolute maximum ratings and operating conditions Table 1. Symbol VCC Vid Vin Iin Tstg Rthja Tj ESD Supply voltage (1) (2) Absolute maximum ratings (AMR) Parameter Value 6 VCC VDD-0.2 to VCC+0.2 10 -65 to +150 (5)(6) Unit V V V mA C Differential input voltage Input voltage Input current (3) (4) Storage temperature Thermal resistance junction to ambient SC70-5 SOT23-5 Maximum junction temperature HBM: human body MM: machine model(7) model(9) model(8) 205 250 150 4 300 1.5 200 C/W C kV V kV mA CDM: charged device Latch-up immunity 1. All voltage values, except differential voltage are with respect to network ground terminal. 2. Differential voltages are the non-inverting input terminal with respect to the inverting input terminal. 3. Vcc-Vin must not exceed 6 V. 4. Input current must be limited by a resistor in series with the inputs. 5. Short-circuits can cause excessive heating and destructive dissipation. 6. Rth are typical values. 7. Human body model: 100 pF discharged through a 1.5 k resistor between two pins of the device, done for all couples of pin combinations with other pins floating. 8. Machine mode: a 200 pF capacitor is charged to the specified voltage, then discharged directly between two pins of the device with no external series resistor (internal resistor < 5 ), done for all couples of pin combinations with other pins floating. 9. Charged device model: all pins plus package are charged together to the specified voltage and then discharged directly to the ground. Table 2. Symbol VCC Vicm Toper Operating conditions Parameter Supply voltage Common mode input voltage range Operating free air temperature range Value 1.5 to 5.5 VDD -0.1 to VCC +0.1 -40 to +125 Unit V V C 2/18 TSV621 Electrical characteristics 2 Table 3. Symbol Electrical characteristics Electrical characteristics at VCC = +1.8 V with VDD = 0 V, Vicm = VCC/2, Tamb = 25 C, and RL connected to VCC/2 (unless otherwise specified) Parameter Conditions Min. Typ. Max. Unit DC performance TSV621 TSV621A Vio Offset voltage Tmin < Top < Tmax TSV621 TSV621A 2 1 Tmin < Top < Tmax 1 1 Tmin < Top < Tmax 0 V to 1.8 V, Vout = 0.9 V Tmin < Top < Tmax RL= 10 k Vout= 0.5 V to 1.3 V , Tmin < Top < Tmax High level output voltage RL = 10 k Tmin < Top < Tmax Low level output voltage RL = 10 k Tmin < Top < Tmax Isink Iout Isource Vo = 1.8 V Tmin < Top < Tmax Vo = 0 V Tmin < Top < Tmax ICC Supply current (per operator) No load, Vout = VCC/2 Tmin < Top < Tmax 6 4 6 4 25 31 33 A 10 mA 12 mA 53 51 78 73 35 50 4 35 mV 50 5 mV 95 dB 1 74 dB 10 (1) 4 0.8 mV 6 2.8 V/C pA 100 10(1) pA 100 DVio Iio Input offset voltage drift Input offset current (Vout = VCC/2) Input bias current (Vout = VCC/2) Common mode rejection ratio 20 log (Vic/Vio) Large signal voltage gain Iib CMR Avd VOH VOL AC performance GBP Fu m Gm SR Gain bandwidth product Unity gain frequency Phase margin Gain margin Slew rate RL = 10 k CL = 100 pF, , f = 100 kHz RL = 10 k CL = 100 pF , RL = 10 k, CL = 100 pF RL = 10 k, CL = 100 pF RL = 10 k, CL = 100 pF, Av = 1 0.084 275 340 280 45 9 0.11 0.14 kHz kHz Degrees dB V/s 1. Guaranteed by design. 3/18 Electrical characteristics Table 4. Symbol DC performance TSV621 TSV621A Vio Offset voltage Tmin < Top < Tmax TSV621 TSV621A 2 1 Tmin < Top < Tmax Input bias current Tmin < Top < Tmax Common mode rejection ratio 20 log (Vic/Vio) Large signal voltage gain 0 V to 3.3 V, Vout = 1.75 V Tmin < Top < Tmax RL=10 k Vout = 0.5 V to 2.8 V , Tmin < Top < Tmax High level output voltage RL = 10 k Tmin < Top < Tmax Low level output voltage RL = 10 k Tmin < Top < Tmax Isink Iout Isource Vo = 5 V Tmin < Top < Tmax Vo = 0 V Tmin < Top < Tmax ICC Supply current (per operator) No load, Vout = 2.5 V Tmin < Top < Tmax 30 25 30 25 26 33 35 38 45 57 53 81 76 35 50 4 35 5 98 1 79 100 1 1 Iib 10(1) 100 10(1) 4 0.8 TSV621 VCC = +3.3 V, VDD = 0 V, Vicm = VCC/2, Tamb = 25 C, RL connected to VCC/2 (unless otherwise specified) Parameter Min. Typ. Max. Unit mV 6 2.8 V/C pA pA pA pA dB dB dB dB mV DVio Iio Input offset voltage drift Input offset current CMR Avd VOH VOL mV 50 mA mA A A AC performance GBP Fu m Gm SR Gain bandwidth product Unity gain frequency Phase margin Gain margin Slew rate , RL = 10 k CL = 100 pF, f = 100 kHz RL = 10 k, CL = 100 pF RL = 10 k, CL = 100 pF RL = 10 k, CL = 100 pF RL = 10 k CL = 100 pF, AV = 1 , 0.094 310 380 310 45 9 0.12 kHz kHz Degrees dB V/s 1. Guaranteed by design. 4/18 TSV621 Table 5. Symbol DC performance TSV621 TSV621A Vio Offset voltage Tmin < Top < Tmax TSV621 TSV621A Electrical characteristics VCC = +5 V, VDD = 0 V, Vicm = VCC/2, Tamb = 25 C, RL connected to VCC/2 (unless otherwise specified) Parameter Min. Typ. Max. Unit 4 0.8 mV 6 2.8 2 1 10(1) 100 10(1) 100 V/C pA pA pA pA dB DVio Iio Input offset voltage drift Input offset current Tmin < Top < Tmax Input bias current Tmin < Top < Tmax Common mode rejection ratio 20 log (Vic/Vio) 0 V to 5 V, Vout = 2.5 V Tmin < Top < Tmax 60 55 75 73 85 80 35 50 1 1 Iib 1 80 CMR SVR Supply voltage rejection ratio 20 VCC = 1.8 to 5 V log (VCC/Vio) Tmin < Top < Tmax Large signal voltage gain RL=10 k Vout = 0.5 V to 4.5 V , Tmin < Top < Tmax High level output voltage RL = 10 k Tmin < Top < Tmax Low level output voltage RL = 10 k Tmin < Top < Tmax Isink Vo = 5 V Tmin < Top < Tmax Vo = 0 V Tmin < Top < Tmax No load, Vout = 2.5 V Tmin < Top < Tmax 102 dB 98 dB Avd 7 mV 6 35 mV 50 VOH VOL 40 35 40 35 69 mA 65 74 mA 68 29 36 38 A A Iout Isource ICC Supply current (per operator) AC performance GBP Fu m Gm SR Gain bandwidth product Unity gain frequency Phase margin Gain margin Slew rate RL = 10 k CL = 100 pF, , f = 100 kHz RL = 10 k, CL = 100 pF RL = 10 k, CL = 100 pF RL = 10 k, CL = 100 pF , RL = 10 k CL = 100 pF, AV = 1 0.108 350 420 360 45 9 0.14 kHz kHz Degrees dB V/s 5/18 Electrical characteristics Table 5. Symbol en THD TSV621 VCC = +5 V, VDD = 0 V, Vicm = VCC/2, Tamb = 25 C, RL connected to VCC/2 (unless otherwise specified) (continued) Parameter Equivalent input noise voltage Total harmonic distortion f = 1 kHz Av = 1, f = 1 kHz, RL= 100 k, Vicm = Vcc/2, Vout = 2 Vpp Min. Typ. 70 0.004 Max. Unit nV ----------Hz % 1. Guaranteed by design. 6/18 TSV621 Electrical characteristics Figure 1. 0.5 0.4 Input Offset Voltage (mV) Input offset voltage vs input common mode at VCC = 1.5 V Figure 2. Input offset voltage vs input common mode at VCC = 5 V 0.4 Input Offset Voltage (mV) 0.3 0.2 0.1 0.0 -0.1 -0.2 -0.3 -0.4 -0.5 -0.2 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 Input Common Mode Voltage (V) 1.6 0.2 0.0 -0.2 -0.4 0.0 1.0 2.0 3.0 4.0 Input Common Mode Voltage (V) 5.0 Figure 3. Supply current vs. supply voltage at Vicm = VCC/2 Figure 4. Output current vs. output voltage at VCC = 1.5 V Figure 5. Output current vs. output voltage at Figure 6. VCC = 5 V Voltage gain and phase vs. frequency at Vcc = 1.5 V Gain (dB) Phase () 7/18 Electrical characteristics Figure 7. Voltage gain and phase vs. frequency at VCC = 5 V Figure 8. TSV621 Phase margin vs. output current at VCC = 1.5 V and VCC = 5 V 90 80 70 Vcc=5V Gain (dB) 60 Phase () 50 40 30 20 10 0 -1.5 Vicm=Vcc/2, Cl=100pF Rl=4.7kohms, T=25 C -1.0 -0.5 0.0 0.5 Vcc=1.5V 1.0 1.5 Figure 9. Slew rate vs. supply voltage Figure 10. Slew rate vs. supply voltage Slew rate (V/ s) 10V/div Supply voltage (V) Figure 11. Distortion + noise vs. output voltage Figure 12. Distortion + noise vs. frequency 1 Vcc=1.5V Rl=10kohms THD + N (%) Vcc=1.5V Rl=10k Vcc=1.5V Rl=100k Vcc=1.5V Rl=100kohms THD + N (%) 0.1 f=1kHz Gain=1 BW=22kHz Vicm=Vcc/2 Vcc=5.5V Rl=10kohms Vcc=5.5V Rl=100kohms 0.01 10 Output Voltage (Vpp) 100 1000 10000 8/18 TSV621 Electrical characteristics Figure 13. Noise vs. frequency Input equivalent noise density (nV/VHz) Vicm=4.5V Vicm=2.5V Vcc=5V T=25 C Frequency (Hz) 9/18 Application information TSV621 3 3.1 Application information Operating voltages The TSV621 can operate from 1.5 to 5.5 V. Its parameters are fully specified for 1.8-, 3.3and 5-V power supplies. However, the parameters are very stable in the full VCC range and several characterization curves show the TSV621 characteristics at 1.5 V. Additionally, the main specifications are guaranteed in extended temperature ranges from -40 C to +125 C. 3.2 Rail-to-rail input The TSV621 is built with two complementary PMOS and NMOS input differential pairs. The device has a rail-to-rail input, and the input common mode range is extended from VDD -0.1 V to VCC +0.1 V. The transition between the two pairs appear at VCC -0.7 V. In the transition region, the performance of CMRR, PSRR, Vio and THD is slightly degraded (as shown in Figure 14 and Figure 15 for Vio vs. Vicm). Figure 14. Input offset voltage vs input common mode at VCC = 1.5 V 0.5 0.4 Input Offset Voltage (mV) Figure 15. Input offset voltage vs input common mode at VCC = 5 V 0.4 Input Offset Voltage (mV) 0.3 0.2 0.1 0.0 -0.1 -0.2 -0.3 -0.4 -0.5 -0.2 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 Input Common Mode Voltage (V) 1.6 0.2 0.0 -0.2 -0.4 0.0 1.0 2.0 3.0 4.0 Input Common Mode Voltage (V) 5.0 The device is guaranteed without phase reversal. 3.3 Rail-to-rail output The operational amplifier's output level can go close to the rails: 35 mV maximum above and below the rail when connected to a 10 k resistive load to VCC/2. 10/18 TSV621 Application information 3.4 Optimization of DC and AC parameters This device uses an innovative approach to reduce the spread of the main DC and AC parameters. An internal adjustment achieves a very narrow spread of current consumption (29 A typical, min/max at 17%). Parameters linked to the current consumption value, such as GBP, SR and AVd benefit from this narrow dispersion. All parts present a similar speed and the same behavior in terms of stability. In addition, the minimum values of GBP and SR are guaranteed (GBP = 350 kHz min, SR = 0.15 V/s min). 3.5 Driving resistive and capacitive loads These products are micro-power, low-voltage operational amplifiers optimized to drive rather large resistive loads, above 5 k For lower resistive loads, the THD level may significantly . increase. In a follower configuration, these operational amplifiers can drive capacitive loads up to 100 pF with no oscillations. When driving larger capacitive loads, adding a small in-series resistor at the output can improve the stability of the device (see Figure 16 for recommended in-series resistor values). Once the in-series resistor value has been selected, the stability of the circuit should be tested on bench and simulated with the simulation model. Figure 16. In-series resistor vs. capacitive load 3.6 PCB layouts For correct operation, it is advised to add 10 nF decoupling capacitors as close as possible to the power supply pins. In-series resistor () 11/18 Application information TSV621 3.7 Macromodel An accurate macromodel of TSV621 is available on STMicroelectronics' web site at www.st.com. This model is a trade-off between accuracy and complexity (that is, time simulation) of the TSV62x operational amplifiers. It emulates the nominal performances of a typical device within the specified operating conditions mentioned in the datasheet. It helps to validate a design approach and to select the right operational amplifier, but it does not replace on-board measurements. 12/18 TSV621 Package information 4 Package information In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK(R) packages, depending on their level of environmental compliance. ECOPACK(R) specifications, grade definitions and product status are available at: www.st.com. ECOPACK(R) is an ST trademark. 13/18 Package information TSV621 4.1 SOT23-5 package mechanical data Figure 17. SOT23-5L package mechanical drawing Table 6. SOT23-5L package mechanical data Dimensions Ref. Min. A A1 A2 B C D D1 e E F L K 2.60 1.50 0.10 0 0.90 0.35 0.09 2.80 0.90 Millimeters Typ. 1.20 Max. 1.45 0.15 1.05 0.40 0.15 2.90 1.90 0.95 2.80 1.60 0.35 3.00 1.75 0.60 10 0.102 0.059 0.004 1.30 0.50 0.20 3.00 0.035 0.013 0.003 0.110 Min. 0.035 Inches Typ. 0.047 Max. 0.057 0.006 0.041 0.015 0.006 0.114 0.075 0.037 0.110 0.063 0.013 0.118 0.069 0.023 0.051 0.019 0.008 0.118 14/18 TSV621 Package information 4.2 SC70-5 (or SOT323-5) package mechanical data Figure 18. SC70-5 (or SOT323-5) package mechanical drawing SIDE VIEW DIMENSIONS IN MM GAUGE PLANE COPLANAR LEADS SEATING PLANE TOP VIEW Table 7. SC70-5 (or SOT323-5) package mechanical data Dimensions Ref Min A A1 A2 b c D E E1 e e1 L < 0.26 0 0.80 0.15 0.10 1.80 1.80 1.15 0.80 Millimeters Typ Max 1.10 0.10 0.90 1.00 0.30 0.22 2.00 2.10 1.25 0.65 1.30 0.36 0.46 8 0.010 2.20 2.40 1.35 0.315 0.006 0.004 0.071 0.071 0.045 Min 0.315 Inches Typ Max 0.043 0.004 0.035 0.039 0.012 0.009 0.079 0.083 0.049 0.025 0.051 0.014 0.018 0.087 0.094 0.053 15/18 Ordering information TSV621 5 Ordering information Table 8. Order codes Temperature range -40C to +125C -40C to +125C Package SOT23-5 SC70-5 Packing Tape & reel Tape & reel Marking K106 K16 Part number TSV621ILT TSV621ICT 16/18 TSV621 Revision history 6 Revision history Table 9. Date 12-Jan-2009 Document revision history Revision 1 Initial release. Changes 17/18 TSV621 Please Read Carefully: Information in this document is provided solely in connection with ST products. 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