Precision Low Noise, Low Input Bias Current Operational Amplifiers

OP1177/OP2177/OP4177

FEATURES

• Low Offset Voltage: 60 V Max
• Very Low Offset Voltage Drift: 0.7 V/C Max
• Low Input Bias Current: 2 nA Max
• Low Noise: 8 nV/√Hz
• CMRR, PSRR, and AVO > 120 dB Min
• Low Supply Current: 400 A/Amp
• Dual Supply Operation: 2.5 V to 15 V
• Unity Gain Stable
• No Phase Reversal
• Inputs Internally Protected Beyond Supply Voltage

APPLICATIONS

• Wireless Base Station Control Circuits
• Optical Network Control Circuits
• Instrumentation
• Sensors and Controls
  • Thermocouples
  • RTDs
  • Strain Bridges
  • Shunt Current Measurements
• Precision Filters G

GENERAL DESCRIPTION

The OPx177 family consists of very high-precision, single, dual, and quad amplifiers featuring extremely low offset voltage and drift, low input bias current, low noise, and low power consumption. Outputs are stable with capacitive loads of over 1,000 pF with no external compensation. Supply current is less than 500 µA per amplifier at 30 V. Internal 500 Ω series resistors protect the inputs, allowing input signal levels several volts beyond either supply without phase reversal.

Unlike previous high-voltage amplifiers with very low offset voltages, the OP1177 and OP2177 are available in the tiny MSOP 8-lead surface-mount package, while the OP4177 is available in TSSOP14. Moreover, specified performance in the MSOP/TSSOP package is identical to performance in the SOIC package.

OPx177 family offers the widest specified temperature range of any high-precision amplifier in surface-mount packaging. All versions are fully specified for operation from –40°C to +125°C for the most demanding operating environments.

Applications for these amplifiers include precision diode power measurement, voltage and current level setting, and level detection in optical and wireless transmission systems. Additional applications include line powered and portable instrumentation and controls—thermocouple, RTD, strain-bridge, and other sensor signal conditioning—and precision filters.

The OP1177 (single) and the OP2177 (dual) amplifiers are available in the 8-lead MSOP and 8-lead SOIC packages. The OP4177 (quad) is available in 14-lead narrow SOIC and 14-lead TSSOP packages. MSOP and TSSOP packages are available in tape and reel only.

ABSOLUTE MAXIMUM RATINGS*

Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 V

Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V_S– to V_S+

Differential Input Voltage . . . . . . . . . . . . . . ±Supply Voltage

Storage Temperature Range

R, RM, and RU Packages . . . . . . . . . . . –65°C to +150°C

Operating Temperature Range

OP1177/OP2177/OP4177 . . . . . . . . . . . –40°C to +125°C

Junction Temperature Range

R, RM, and RU Packages . . . . . . . . . . . –65°C to +150°C

Lead Temperature Range (Soldering, 10 sec) . . . . . . . 300°C

*Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those listed in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

NOTES

1 θJA is specified for worst-case conditions, i.e., θJA is specified for device soldered in circuit board for surface-mount packages.

2 MSOP is only available in tape and reel.

FUNCTIONAL BLOCK DIAGRAM

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CHONGMING GROUP (HK) INT'L CO., LTD. located in Hong Kong and Shenzhen. We are an independent Distributor of Electronic Components,established in 2008. AS a growing fast company, CM GROUP is renowned for its world-class efficiency, excellent services, and extraordinary ability to supply electronic components that are hard to find and even obsolete. We have taken pride in our innovation, reliability and service, especially in the semiconductor marketplace.
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