High Precision Operational Amplifiers - OPA2277

OPA2277 (ACTIVE)

High Precision Operational Amplifiers

Recommended alternative parts

  • OPA2188  - The device has the SAME FUNCTIONALITY as the compared device, but is not pin-for-pin equivalent and may not be parametrically equivalent.   OPA2188 has improved Vos and drift
  • OPA2227  -  Dual version of OPA227 which features low noise 3nV/sqrt(Hz), offset voltage 75µV, open-loop-gain 160dB and CMRR 138dB
  • OPA177  -  Features offset voltage 25µV, open-loop-gain 130dB and low drift 0.3µV/°C. OPA277 upgrade for the OPA177
  • OPA627  -  Features low noise 4.5nV/sqrt(Hz) at 10kHz and low drift 0.8µV/°C max
  • OPA27  -  OPA227 upgrade for OP-27
  • OPA227  -  Single version of OPA2227 which features low noise 3nV/sqrt(Hz), offset voltage 75µV, open-loop-gain of 160dB and CMRR 138dB

Description

The OPA277 series precision op amps replace the industry standard OP-177. They offer improved noise, wider output voltage swing, and are twice as fast with half the quiescent current. Features include ultra low offset voltage and drift, low bias current, high common-mode rejection, and high power supply rejection. Single, dual, and quad versions have identical specifications for maximum design flexibility.

OPA277 series op amps operate from ±2V to ±18V supplies with excellent performance. Unlike most op amps which are specified at only one supply voltage, the OPA277 series is specified for real-world applications; a single limit applies over the ±5V to ±15V supply range. High performance is maintained as the amplifiers swing to their specified limits. Because the initial offset voltage (±20µV max) is so low, user adjustment is usually not required. However, the single version (OPA277) provides external trim pins for special applications.

OPA277 op amps are easy to use and free from phase inversion and overload problems found in some other op amps. They are stable in unity gain and provide excellent dynamic behavior over a wide range of load conditions. Dual and quad versions feature completely independent circuitry for lowest crosstalk and freedom from interaction, even when overdriven or overloaded.

Single (OPA277) and dual (OPA2277) versions are available in DIP-8, SO-8, and DFN-8 (4mm x 4mm) packages. The quad (OPA4277) comes in DIP-14 and SO-14 surface-mount packages. All are fully specified from -40°C to +85°C and operate from -55°C to +125°C.

Features

  • ULTRA LOW OFFSET VOLTAGE: 10µV
  • ULTRA LOW DRIFT: ±0.1µV/°C
  • HIGH OPEN-LOOP GAIN: 134dB
  • HIGH COMMON-MODE REJECTION: 140dB
  • HIGH POWER SUPPLY REJECTION: 130dB
  • LOW BIAS CURRENT: 1nA max
  • WIDE SUPPLY RANGE: ±2V to ±18V
  • LOW QUIESCENT CURRENT: 800µA/amp
  • SINGLE, DUAL, AND QUAD VERSIONS
  • REPLACES OP-07, OP-77, OP-177
  • APPLICATIONS
    • TRANSDUCER AMPLIFIER
    • BRIDGE AMPLIFIER
    • TEMPERATURE MEASUREMENTS
    • STRAIN GAGE AMPLIFIER
    • PRECISION INTEGRATOR
    • BATTERY POWERED INSTRUMENTS
    • TEST EQUIPMENT

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Parametrics Compare all products in Precision Amplifier

 
Number of Channels (#)
Total Supply Voltage (Min) (+5V=5, +/-5V=10)
Total Supply Voltage (Max) (+5V=5, +/-5V=10)
Iq per channel (Max) (mA)
Slew Rate (Typ) (V/us)
Vos (Offset Voltage @ 25C) (Max) (mV)
Offset Drift (Typ) (uV/C)
CMRR (Min) (dB)
GBW (Typ) (MHz)
IIB (Max) (pA)
Vn at 1kHz (Typ) (nV/rtHz)
Rating
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
OPA2277 OPA277 OPA4277
2     1     4    
4     4     4    
36     36     36    
0.825     0.825     0.825    
0.8     0.8     0.8    
0.025     0.02     0.05    
0.1     0.1     0.15    
130     130     115    
1     1     1    
1000     1000     2800    
8     8     8    
Catalog     Catalog     Catalog    
-40 to 85     -40 to 85     -40 to 85    
8PDIP
8SOIC
8VSON    
8PDIP
8SOIC
8VSON    
14PDIP
14SOIC    
1.65 | 1ku     1.10 | 1ku     3.85 | 1ku    

Companion parts

Part # Name Product Family Comments
TPS7A4901   Vin 3V to 36V, 150mA, Ultra-Low Noise, High PSRR, Low-Dropout Linear Regulator   LINEAR REGULATOR (LDO) - SINGLE CHANNEL LDO    TPS7A4901 is a positive, high-voltage (+36V), low-noise linear regulator designed to power high precision instrumentation applications where clean voltage rails are critical to maximize system performance  
TPS7A3001   Vin -3V to -36V, -200mA, Ultra-Low Noise, High PSRR, Low-Dropout Linear Regulator   LINEAR REGULATOR (LDO) - SINGLE CHANNEL LDO    TPS7A3001 is a negative, high-voltage (-36V), low-noise linear regulator designed to power high precision instrumentation applications where clean voltage rails are critical to maximize system performance  
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