OPA857 Series

Ultralow-Noise, Wideband, Pseudo-Differential Output Transimpedance Amplifier

Catalog

Ultralow-Noise, Wideband, Pseudo-Differential Output Transimpedance Amplifier

Part	Mounting Type	Supplier Device Package	Voltage - Supply Span (Max) [Max]	Voltage - Supply Span (Min) [Min]	Current - Output / Channel	Amplifier Type	Current - Input Bias	Number of Circuits	Operating Temperature [Max]	Operating Temperature [Min]	Slew Rate	Current - Supply	Package / Case	-3db Bandwidth	Utilized IC / Part	Channels per IC	Voltage - Supply, Single/Dual (±) [Min]	Voltage - Supply, Single/Dual (±) [Max]	Current - Supply (Main IC)	Board Type	Output Type	Supplied Contents
Texas Instruments OPA857TD1	Surface Mount	Die	3.6 V	2.6 V	50 mA	Transimpedance	1 µA	1	85 °C	-40 °C	220 V/µs	23.4 mA	Die	130 MHz
Texas Instruments OPA857IRGTR	Surface Mount	16-VQFN (3x3)	3.6 V	2.6 V	50 mA	Transimpedance	1 µA	1	85 °C	-40 °C	220 V/µs	23.4 mA	16-VFQFN Exposed Pad	130 MHz
Texas Instruments OPA857EVM-978					50 mA	Transimpedance					215 V/µs			125 MHz	OPA857	1 - Single	2.7 V	3.6 V	23.4 mA	Fully Populated	Single-Ended	Board(s)
Texas Instruments OPA857EVM					50 mA	Transimpedance					215 V/µs			125 MHz	OPA857	1 - Single	2.6 V	3.6 V	25 mA	Fully Populated	Single-Ended	Board(s)

Catalog

Ultralow-Noise, Wideband, Pseudo-Differential Output Transimpedance Amplifier

Key Features

• Internal Midscale Reference VoltagePseudo-Differential Output VoltageWide Dynamic RangeClosed-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 nsInternal Input Protection DiodePower Supply:Voltage: 2.7 V to 3.6 VCurrent: 23.4 mAExtended Temperature Range: –40°C to +85°CInternal Midscale Reference VoltagePseudo-Differential Output VoltageWide Dynamic RangeClosed-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 nsInternal Input Protection DiodePower Supply:Voltage: 2.7 V to 3.6 VCurrent: 23.4 mAExtended Temperature Range: –40°C to +85°C

Description

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. 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.