OPA857 Texas instruments

OPA857

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OPA857

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Описание

The OPA857 is a wideband, fast overdrive recovery, fast-settling, ultralow-noise transimpedance amplifier targeted at photodiode monitoring applications. With selectable feedback resistance, the OPA857 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 OPA857 is available in a 3-mm × 3-mm VQFN package. The device is characterized for operation over the full industrial temperature range from –40°C to +85°C.

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 nA_RMS (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

Number of channels	1
GBW (typ) (MHz)	6800
Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V)	3.6
Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V)	2.3
Vos (offset voltage at 25°C) (max) (mV)	10
Rail-to-rail	No
Features	Integrated TIA
BW at Acl (MHz)	130
Operating temperature range (°C)	-40 to 85
Rating	Catalog