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AD704JNZ

Dual precision op-amp, 25μA/amplifier, 400μV Vos, ±15V, PDIP-8

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Manufacturer Part：

AD704JNZ

Package：

PDIP-8 (6 x 9.4 mm)

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Description

Product Overview

The AD704JNZ from Analog Devices is a dual precision, low-power bipolar operational amplifier with 25μA max supply current per amplifier and 400μV max offset voltage. Operating from ±15V supplies, it provides super-beta input transistors for low bias current in a PDIP-8 package.

Key Specifications

Channels 2 (dual)
Supply Voltage Range ±4V to ±18V
Supply Current per Amp 25 μA (max)
Input Offset Voltage 400 μV (max)
Input Bias Current 1 nA (typical)
Gain Bandwidth Product 900 kHz
Slew Rate 0.15 V/μs
Package PDIP-8
Operating Temperature 0°C to +70°C (J grade)

Features

  • Super-beta input transistors for low input bias current (1nA typical)
  • Low supply current of 25μA per amplifier for battery-powered applications
  • Precision offset voltage of 400μV maximum
  • Low 1/f noise corner frequency for DC and low-frequency applications
  • Direct replacement for industry-standard dual op-amps (LM358, LT1013)
  • No phase reversal on overdriven inputs

Applications

  • Precision instrumentation and measurement amplifiers
  • Battery-powered portable data acquisition systems
  • Medical monitoring and biopotential amplifiers
  • Low-frequency signal conditioning for sensors
  • Active filters and integrators in precision analog circuits

The AD704JNZ from Analog Devices is a dual-precision, low-power operational amplifier using super-beta input transistors to achieve very low input bias current of 1nA typical while drawing only 25μA supply current per amplifier. The device operates from dual supplies of ±4V to ±18V and features a maximum input offset voltage of 400μV (J grade). The super-beta transistor input stage provides the low bias current of a BiFET amplifier without the speed limitations and input voltage noise of JFET designs. The AD704 is a functional upgrade for industry-standard dual op-amps such as the LM358 and LT1013, offering better DC precision and lower supply current in the same pinout.

The AD704 operates using a super-beta bipolar input stage. (1) The input differential pair uses super-beta NPN transistors with current gain (beta) of 1000-5000, compared to 100-500 for standard bipolar transistors. This dramatically reduces the input bias current to 1nA typical while maintaining the low offset voltage and low noise characteristics of bipolar technology. (2) The gain stage provides the high open-loop voltage gain needed for precision amplification, with the overall amplifier compensated for unity-gain stability by an internal 30pF capacitor. (3) The output stage can drive loads to within 2V of either supply rail, with short-circuit protection and no phase reversal when the inputs are overdriven beyond the common-mode range. The low 25μA supply current per amplifier makes it ideal for battery-powered applications.

Pin Name Function
1 OUT A Amplifier A output
2 -IN A Amplifier A inverting input
3 +IN A Amplifier A non-inverting input
4 V- Negative supply
5 +IN B Amplifier B non-inverting input
6 -IN B Amplifier B inverting input
7 OUT B Amplifier B output
8 V+ Positive supply
  • Precision sensor signal conditioning with low bias current and offset voltage
  • Battery-powered portable data acquisition with 25μA per amplifier current draw
  • Medical biopotential amplifiers requiring low input bias current
  • Active low-pass filters and integrators in precision analog systems
  • Replacement for LM358 in applications requiring better DC precision
Model Manufacturer Key Difference
AD704ANZ Analog Devices -40°C to +85°C industrial temp
AD704BNZ Analog Devices Lower offset voltage (200μV)
AD706JNZ Analog Devices Single channel version
LT1013CN8 Analog Devices Dual precision, higher speed
OPA2188AIDR TI Zero-drift dual, SOIC-8
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Contact Information

Email: info@materialparts.com

Tel / WhatsApp: +86 13760382860

Service & Packaging

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Contact Information

For service consultation or packaging customization, please feel free to contact us:
Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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