Datasheet OP1177, OP2177, OP4177 (Analog Devices)

Precision Low Noise, Low Input Bias Current Operational Amplifiers Data Sheet OP1177/ OP2177/ OP4177 FEATURES PIN CONFIGURATIONS Low offset voltage: 60 μV maximum Very low offset voltage drift: 0.7 μV/°C maximum NC 1 8 NC Low input bias current: 2 nA maximum –IN 2 7 V+ NC 1 8 NC OP1177 +IN 3 6 OUT Low noise: 8 nV/√Hz typical –IN V+ OP1177 +IN OUT V– 4 5 NC CMRR, PSRR, and A
2
VO > 120 dB minimum V– 4 5 NC
0 001 0 7-
Low supply current: 400 μA per amplifier NC = NO CONNECT NC = NO CONNECT
627- 0262 02
Dual supply operation: ±2.5 V to ±15 V
Figure 1. 8-Lead MSOP (RM Suffix) Figure 2. 8-Lead SOIC_N (R Suffix)
Unity-gain stable No phase reversal OUT A 1 8 V+ Inputs internally protected beyond supply voltage –IN A 2 7 OUT B OUT A 1 8 V+ OP2177 APPLICATIONS –IN A +IN A –IN B OUT B 3 6 OP2177
3 04
+IN A –IN B
00 -0 7-
V– 4 5 +IN B V– 4 5
627
Wireless base station control circuits +IN B
262 0 02
Optical network control circuits
Figure 3. 8-Lead MSOP (RM Suffix) Figure 4. 8-Lead SOIC_N (R Suffix)
Instrumentation Sensors and controls OUT A 1 14 OUT D Thermocouples –IN A 2 13 –IN D Resistor thermal detectors (RTDs) +IN A 3 12 +IN D OP4177 Strain bridges V+ 4 11 V– OUT A 1 14 OUT D Shunt current measurements –IN D +IN B 5 10 +IN C –IN A +IN A +IN D Precision filters V+ OP4177 –IN B 6 9 –IN C V–
5
+IN B +IN C
0 0 006
OUT B 7 8 OUT C –IN B –IN C
7- 62
OUT B 7 8 OUT C
02 02627- Figure 5. 14-Lead SOIC_N (R Suffix) Figure 6. 14-Lead TSSOP (RU Suffix)
GENERAL DESCRIPTION
The OPx177 family consists of very high precision, single, dual, performance in the SOIC package. MSOP and TSSOP are and quad amplifiers featuring extremely low offset voltage and available in tape and reel only. drift, low input bias current, low noise, and low power consump- The OPx177 family offers the widest specified temperature tion. Outputs are stable with capacitive loads of over 1000 pF range of any high precision amplifier in surface-mount packaging. with no external compensation. Supply current is less than 500 μA All versions are fully specified for operation from −40°C to per amplifier at 30 V. Internal 500 Ω series resistors protect the +125°C for the most demanding operating environments. inputs, allowing input signal levels several volts beyond either supply without phase reversal. Applications for these amplifiers include precision diode power measurement, voltage and current level setting, and Unlike previous high voltage amplifiers with very low offset level detection in optical and wireless transmission systems. voltages, the OP1177 (single) and OP2177 (dual) amplifiers Additional applications include line-powered and portable are available in tiny 8-lead surface-mount MSOP and 8-lead instrumentation and controls—thermocouple, RTD, strain- narrow SOIC packages. The OP4177 (quad) is available in bridge, and other sensor signal conditioning—and precision filters. TSSOP and 14-lead narrow SOIC packages. Moreover, specified performance in the MSOP and the TSSOP is identical to
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Document Outline Features Applications Pin Configurations General Description Revision History Specifications Electrical Characteristics Electrical Characteristics Absolute Maximum Ratings Thermal Resistance ESD Caution Typical Performance Characteristics Functional Description Total Noise-Including Source Resistors Gain Linearity Input Overvoltage Protection Output Phase Reversal Settling Time Overload Recovery Time THD + Noise Capacitive Load Drive Stray Input Capacitance Compensation Reducing Electromagnetic Interference Proper Board Layout Difference Amplifiers A High Accuracy Thermocouple Amplifier Low Power Linearized RTD Single Operational Amplifier Bridge Realization of Active Filters Band-Pass KRC or Sallen-Key Filter Channel Separation References on Noise Dynamics and Flicker Noise Outline Dimensions Ordering Guide