OPA657NB/250 Part Information

Details for OPA657NB/250 by Texas Instruments

Semiconductors - ICs > Amplifiers & Comparators > Operational Amplifiers - Op Amps

Part Description

The OPA657 device combines a high-gain bandwidth, low-distortion, voltage-feedback operational amplifier with a low-voltage noise JFET-input stage to offer a very high dynamic range amplifier for high-precision ADC (analog-to-digital converter) driving or wideband transimpedance applications. Photodiode applications see improved noise and bandwidth using this decompensated, high-gain bandwidth amplifier. Very low level signals can be significantly amplified in a single OPA657 gain stage with exceptional bandwidth and accuracy. Having a high 1.6-GHz gain bandwidth product gives greater than 10-MHz signal bandwidths up to gains of 160 V/V (44 dB). The very low input bias current and capacitance supports this performance even for relatively high source impedances. Broadband photodetector applications benefit from the low-voltage noise JFET inputs for the OPA657. The JFET input contributes virtually no current noise while for broadband applications, a low voltage noise is also required. The low 4.8 nV/√Hz input voltage noise provides exceptional input sensitivity for higher bandwidth applications. The example shown below gives a total equivalent input noise current of 1.8 pA/√Hz over a 10-MHz bandwidth.

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Part Features

  • Available in High Grade With Improved DC Specifications
  • Fast Overdrive Recovery
  • High Bandwidth 275 MHz (G = 10)
  • High Gain Bandwidth Product: 1.6 GHz
  • High-Output Current: 70 mA
  • Low-Input Bias Current: 2 pA
  • Low-Input Offset Voltage: u00b1250 u00b5V
  • Low-Input Voltage Noise: 4.8 nV/u221aHz
  • Operating Temperature Range: u201340u00b0C to 85u00b0C
  • Slew Rate 700 V/u00b5s (G = 10, 1-V Step)

Part Specifications

No. of Amplifiers 1 Amplifier, 1Amplifiers
Bandwidth 1.6GHz
Slew Rate 700V/µs
Supply Voltage Range 10V to 12V
Amplifier Case Style SOT-23
No. of Pins 5Pins
Operating Temperature Min -40°C
Operating Temperature Max 85°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant Yes
MSL MSL 2 - 1 year
SVHC No SVHC (27-Jun-2018)
Amplifer Supply Voltage 10V to 12V
Op Amp Type Wideband
RoHS Compliant

Alternative Part Descriptions

  • OP AMP, 1.6GHZ, 700V/US, SOT-23-5; No. of Amplifiers:1 Amplifier; Bandwidth:1.6GHz; Slew Rate:700V/µs; Supply Voltage Range:10V to 12V; Amplifier Case Style:SOT-23; No. of Pins:5Pins; Operating Temperature Min:-40°C; Operating RoHS Compliant: Yes | Newark Electronics
  • 1.6GHz, Low Noise, FET-Input Operational Amplifier | Texas Instruments

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