OPA857-DIE Low-Noise, Wideband, Selectable-gain, Transimpedance Amp | TI.com

OPA857-DIE (ACTIVE)

Low-Noise, Wideband, Selectable-gain, Transimpedance Amp

 

Description

The OPA857-DIE is a wideband, fast overdrive recovery, fast-settling, ultralow-noise transimpedance amplifier targeted at photodiode monitoring applications. With selectable feedback resistance, the OPA857-DIE simplifies the design of high-performance optical systems. Very fast overload recovery time and internal input protection provide the best combination to protect the remainder of the signal chain from overdrive while minimizing recovery time. The two selectable transimpedance gain configurations allow high dynamic range and flexibility required in modern transimpedance amplifier applications.

The device is characterized for operation over the full industrial temperature range from –40°C to +85°C.

Features

  • Internal Midscale Reference Voltage
  • Pseudo-Differential Output Voltage
  • Wide Dynamic Range
  • Closed-Loop Transimpedance Bandwidth:
    • 125 MHz (5-kΩ Transimpedance Gain, 1.5-pF External Parasitic Capacitance)
    • 105 MHz (20-kΩ Transimpedance Gain, 1.5-pF External Parasitic Capacitance)
  • Ultralow Input-Referred Current Noise (Brickwall Filter BW = 135 MHz):
    • 15 nARMS (20-kΩ Transimpedance)
  • Very Fast Overload Recovery Time: < 25 ns
  • Internal Input Protection Diode
  • Power Supply:
    • Voltage: 2.7 V to 3.6 V
    • Current: 23.4 mA
  • Extended Temperature Range: –40°C to +85°C

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Parametrics Compare all products in High-Speed Op Amps (GBW>=50MHz)

 
Architecture
Number of Channels (#)
Total Supply Voltage (Min) (+5V=5, +/-5V=10)
Total Supply Voltage (Max) (+5V=5, +/-5V=10)
BW @ Acl (MHz)
Slew Rate (Typ) (V/us)
Iq per channel (Typ) (mA)
Rail-to-Rail
Features
Rating
Operating Temperature Range (C)
Input Bias Current (Max) (pA)
GBW (Typ) (MHz)
Output Current (Typ) (mA)
2nd Harmonic (dBc)
3rd Harmonic (dBc)
@ MHz
OPA857-DIE
FET
Voltage FB    
1    
2.3    
3.6    
130    
220    
23.4    
No    
N/A    
Catalog    
-40 to 85    
20    
6800    
20    
94    
97    
10    

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