OPA277 高精度运算放大器 | 德州仪器 TI.com.cn

OPA277 (正在供货)


高精度运算放大器 - OPA277


OPA202 可实现更小的功耗 (0.58mA) 和更低的成本。

OPA207 可实现相似的性能,包括更低的噪音 (7.5nV/√Hz) 和更小的功耗 (0.35mA)。

“OPA202 可实现更小的功耗 (0.58mA) 和更低的成本”“OPA207 可实现相似的性能,包括更低的噪声 (7.5nV/√Hz) 和更小的功耗 (0.35mA)。”


The OPAx277 series precision operational amplifiers 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 ultralow 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.

OPAx277 series operational amplifiers operate from ±2-V to ±18-V supplies with excellent performance. Unlike most operational amplifiers which are specified at only one supply voltage, the OPAx277 series is specified for real-world applications; a single limit applies over the ±5-V to ±15-V supply range. High performance is maintained as the amplifiers swing to their specified limits. Because the initial offset voltage (±20 µV maximum) is so low, user adjustment is usually not required. However, the single version (OPA277) provides external trim pins for special applications.

OPA277 operational amplifiers are easy to use and free from phase inversion and the overload problems found in some other operational amplifiers. 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.


  • Ultralow Offset Voltage: 10 µV
  • Ultralow Drift: ±0.1 µV/°C
  • High Open-Loop Gain: 134 dB
  • High Common-Mode Rejection: 140 dB
  • High Power Supply Rejection: 130 dB
  • Low Bias Current: 1-nA maximum
  • Wide Supply Range: ±2 V to ±18 V
  • Low Quiescent Current: 800 µA/amplifier
  • Single, Dual, and Quad Versions
  • Replaces OP-07, OP-77, and OP-177


参数 与其它产品相比 精密 运算放大器 (Vos<1mV)

Number of Channels (#)
Total Supply Voltage (Min) (+5V=5, +/-5V=10)
Total Supply Voltage (Max) (+5V=5, +/-5V=10)
GBW (Typ) (MHz)
Slew Rate (Typ) (V/us)
Vos (Offset Voltage @ 25C) (Max) (mV)
Offset Drift (Typ) (uV/C)
Iq per channel (Typ) (mA)
Vn at 1kHz (Typ) (nV/rtHz)
CMRR (Typ) (dB)
Operating Temperature Range (C)
Package Group
Package Size: mm2:W x L (PKG)
Input Bias Current (Max) (pA)
Output Current (Typ) (mA)
OPA277 OP07C OPA202 OPA207
1     1     1     1    
4     6     4.5     4.5    
36     36     36     36    
1     0.6     1     1    
0.8     0.3     0.35     3.6    
No     No     No     Out    
0.02     0.25     0.2     0.1    
0.1     0.5     0.5     0.2    
0.79     2.4     0.58     0.350    
8     9.8     9     7.5    
140     120     148     140    
Catalog     Catalog     Catalog     Catalog    
-40 to 85     0 to 70     -40 to 105     -40 to 125    
SOIC     SOIC    
See datasheet (PDIP)
8SOIC: 29 mm2: 6 x 4.9(SOIC)
8VSON: 16 mm2: 4 x 4(VSON)    
See datasheet (PDIP)
8SOIC: 29 mm2: 6 x 4.9(SOIC)    
8SOIC: 29 mm2: 6 x 4.9(SOIC)     8SOIC: 29 mm2: 6 x 4.9(SOIC)    
1000     1800     2000     1500    
35     10     35     40    
Small Size     N/A     High Cload Drive     High Cload Drive    
Bipolar     Bipolar     Bipolar     Bipolar    

WEBENCH® Designer OPA277

Amplifier Topology
Desired Power Supply Voltage
Positive Supply (Vcc):  V
Negative Supply (Vee):  V
Allowed Power Supply(Vcc-Vee) = 4.0 to 36.0 V
Desired Input and Output Requirements
  Min Max
Vin  V  V
Vout  V  V
Minimum Temperature = -40.0 °C
Maximum Temperature = 85.0 °C