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

Parametrics

Compare all products in High-speed op amps (GBW>=50MHz) Email Download to Excel
Part number Order Architecture Number of channels (#) Total supply voltage (Min) (+5V=5, +/-5V=10) Total supply voltage (Max) (+5V=5, +/-5V=10) BW @ Acl (MHz) Acl, min spec gain (V/V) Slew rate (Typ) (V/us) Vn at flatband (Typ) (nV/rtHz) Vn at 1 kHz (Typ) (nV/rtHz) Iq per channel (Typ) (mA) Vos (offset voltage @ 25 C) (Max) (mV) Rail-to-rail Features Rating Operating temperature range (C) Package Group Package size: mm2:W x L (PKG) CMRR (Typ) (dB) Input bias current (Max) (pA) Offset drift (Typ) (uV/C) GBW (Typ) (MHz) Output current (Typ) (mA) 2nd harmonic (dBc) 3rd harmonic (dBc) @ MHz
OPA857-DIE Order now FET
Voltage FB    
1     2.3     3.6     130       220         23.4       No    
   
Catalog     -40 to 85           20       6800     20     94     97     10    
OPA855 Samples not available Bipolar
Voltage FB    
1     3.3     5.25     2500     7     2750     0.98     1.9     19.5     2.5     No     Decompensated
Shutdown    
Catalog     -40 to 125     WSON | 8     See datasheet (WSON)     100     18500000     1.25     8000     80     80     86     10    
OPA857 Order now FET
Voltage FB    
1     2.3     3.6     130       220     4.5     7     23.4     10     No    
   
Catalog     -40 to 85     VQFN | 16     16VQFN: 9 mm2: 3 x 3 (VQFN | 16)       20       6800     20     94     97     10    
OPA858 Order now FET
Voltage FB    
1     3.3     5.25     1200     7     2000     2.5