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 1000 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 (single) and OP2177 (dual) amplifiers are available in tiny 8-lead surface-mount MSOP and 8-lead narrow SOIC packages. The OP4177 (quad) is available in TSSOP and 14-lead narrow SOIC packages. Moreover, specified performance in the MSOP and the TSSOP is identical to performance in the SOIC package. MSOP and TSSOP are available in tape and reel only.

The 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.

Applications

Wireless base station control circuits

Optical network control circuits

Instrumentation

Sensors and controls

Thermocouples

Resistor thermal detectors (RTDs)

Strain bridges

Shunt current measurements

Precision filters

Data Sheet, Rev. E, 11/07

Part#	Small Signal Bandwidth	Slew Rate	Vos	Ib	V Noise Density	Amplifiers Per Package	Widest Temp Range (°C)
OP1177	1.3MHz	700mV/µs	15µV	500pA	7.9nV/rtHz	1	-40 to +125
AD8675	10MHz	2.5V/µs	10µV	500pA	2.8nV/rtHz	1	-40 to +125
OP2177	1.3MHz	700mV/µs	15µV	500pA	7.9nV/rtHz	2	-40 to +125
AD8628	2.5MHz	1V/µs	1µV	30pA	22nV/rtHz	1	-40 to +125
AD8676	10MHz	2.5V/µs	12µV	500pA	2.8nV/rtHz	2	-40 to +125
AD8605	10MHz	5V/µs	20µV	200fA	6.5nV/rtHz	1	-40 to +125
AD8691	10MHz	5V/µs	400µV	200fA	6.5nV/rtHz	1	-40 to +125
AD8615	23MHz	12V/µs	80µV	200fA	7nV/rtHz	1	-40 to +125
AD8610	25MHz	60V/µs	75µV	2pA	6nV/rtHz	1	-40 to +125
AD8655	28MHz	11V/µs	50µV	10pA	4nV/rtHz	1	-40 to +125
AD8651	50MHz	41V/µs	100µV	1pA	4.5nV/rtHz	1	-40 to +125

The model number is a specific version of a generic that can be purchased or sampled.

Status indicates the current lifecycle of the product. This can be one of 4 stages:

• Pre-Release: The model has not been released to general production, but samples may be available.
• Production: The model is currently being produced, and generally available for purchase and sampling.
• Last Time Buy: The model has been scheduled for obsolescence, but may still be purchased for a limited time.
• Obsolete: The specific part is obsolete and no longer available. Other models listed in the table may still be available (if they have a status that is not obsolete).

The package for this IC (i.e. DIP, SOIC, BGA). An Evaluation Board is a board engineered to show the performance of the model, the part is included on the board.

For detailed drawings and chemical composition please consult our  Package Site

Pin Count is the number of pins, balls, or pads on the device. Pin-out diagrams & pin function descriptions may be found in the datasheet.

This is the acceptable operating range of the device. The various ranges specified are as follows:

• Commercial: 0 to +70 degrees Celsius
• Military : -55 to +125 degrees Celsius
• Industrial: Temperature ranges may vary by model. Please consult the datasheet for more information.
• Automotive: -40 to +125 degrees Celsius

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

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Due to environmental concerns, ADI offers many of our products in lead-free versions. For more information about lead-free parts, please consult our Pb (Lead) free information page.