OPA858IDSGR

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Texas Instruments

5.5 GHZ GAIN BANDWIDTH PRODUCT, DECOMPENSATED TRANSIMPEDANCE AMPLIFIER WITH FET INPUT

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OPA858IDSGR

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Texas Instruments

5.5 GHZ GAIN BANDWIDTH PRODUCT, DECOMPENSATED TRANSIMPEDANCE AMPLIFIER WITH FET INPUT

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Description Specifications Series Pricing CAD Documents

Description

General part information

OPA858 Series

The OPA858 is a wideband, low-noise, operational amplifier with CMOS inputs for wideband transimpedance and voltage amplifier applications. When the device is configured as a transimpedance amplifier (TIA), the 5.5-GHz gain bandwidth product (GBWP) enables applications requiring high closed-loop bandwidths at transimpedance gains in the tens to hundreds of kΩs range.

The graph below demonstrates the bandwidth and noise performance of the OPA858 as a function of the photodiode capacitance when the amplifier is configured as a TIA. The total noise is calculated over a bandwidth range extending from DC to the calculated f-3dBfrequency on the left-hand scale. The OPA858 package features a feedback pin (FB) that simplifies the feedback network connection between the input and the output.

The OPA858 is optimized for use in optical Time-of-Flight (ToF) systems like the one shown in the figure below where the OPA858 is used with theTDC7201time-to-digital converter. The OPA858 can be used in high-resolution LIDAR systems with a high-speed analog-to-digital converter (ADC) and a differential output amplifier like theTHS4541orLMH5401to drive the ADC.

Technical Specifications

Parameters and characteristics for this part

Specification	OPA858IDSGR

-3db Bandwidth	1.2 GHz
Amplifier Type	J-FET
Current - Input Bias	0.4 pA
Current - Output / Channel	105 mA
Current - Supply	21 mA
Gain Bandwidth Product	5.5 GHz
Mounting Type	Surface Mount
Number of Circuits	1
Operating Temperature (Max)	125 °C
Operating Temperature (Min)	-40 °C
Output Type	Single-Ended
Package / Case	8-WFDFN Exposed Pad
Package Length	2 mm
Package Name	8-WSON
Package Width	2 mm
Slew Rate	2000 V/µs
Voltage - Input Offset	800 µV
Voltage - Supply Span (Max)	5.25 V
Voltage - Supply Span (Min)	3.3 V

OPA858 Series

5.5 GHz Gain Bandwidth Product, Decompensated Transimpedance Amplifier with FET Input

Part	Supplied Contents	Current - Supply (Main IC)	-3db Bandwidth	Board Type	Current - Output / Channel	Supply Configuration	Voltage - Supply (Dual) Maximum (Magnitude)	Voltage - Supply (Dual) Minimum (Magnitude)	Voltage - Supply (Single) Maximum	Voltage - Supply (Single) Minimum	Slew Rate	Contents	Amplifier Type	Channels per IC (Single)	Channels per IC (Type)	Channels per IC (Count)	Gain Bandwidth Product	Output Type	Utilized IC / Part	Package / Case	Voltage - Input Offset	Mounting Type	Number of Circuits	Voltage - Supply Span (Max)	Voltage - Supply Span (Min)	Current - Supply	Current - Input Bias	Package Width	Package Name	Package Length	Operating Temperature (Max)	Operating Temperature (Min)
Texas Instruments OPA858DSGEVM	Board(s)	0.019 mA	1.2 GHz	Fully Populated	30 mA	Dual Single	2.6 V	1.6 V	5.2 V	3.2 V	2000 V/µs	Board	Transimpedance	1	Single	1	5.5 GHz	Single-Ended	OPA858
Texas Instruments OPA858IDSGT			1.2 GHz		105 mA						2000 V/µs		J-FET				5.5 GHz	Single-Ended		8-WFDFN Exposed Pad	800 µV	Surface Mount	1	5.25 V	3.3 V	21 mA	0.4 pA	2 mm	8-WSON	2 mm	125 °C	-40 °C
Texas Instruments OPA858IDSGR			1.2 GHz		105 mA						2000 V/µs		J-FET				5.5 GHz	Single-Ended		8-WFDFN Exposed Pad	800 µV	Surface Mount	1	5.25 V	3.3 V	21 mA	0.4 pA	2 mm	8-WSON	2 mm	125 °C	-40 °C