Specification	OPA858IDSGT

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
Slew Rate	2000 V/µs
Supplier Device Package	8-WSON (2x2)
Voltage - Input Offset	800 µV
Voltage - Supply Span (Max) [Max]	5.25 V
Voltage - Supply Span (Min) [Min]	3.3 V

OPA858 Series

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

Part	Amplifier Type	Output Type	Voltage - Supply, Single/Dual (±) [Max]	Voltage - Supply, Single/Dual (±)	Voltage - Supply, Single/Dual (±) [Min]	Current - Output / Channel	Slew Rate	Current - Supply (Main IC)	Supplied Contents	Utilized IC / Part	Channels per IC	Board Type	Voltage - Supply Span (Max) [Max]	Gain Bandwidth Product	Current - Input Bias	Package / Case	Supplier Device Package	Current - Supply	Mounting Type	Number of Circuits	Voltage - Input Offset	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Supply Span (Min) [Min]
Texas Instruments OPA858DSGEVM	Transimpedance	Single-Ended	2.6 V 5.2 V	±1.6V	3.2 V	30 mA	2000 V/µs	19 mA	Board(s)	OPA858	1 - Single	Fully Populated
Texas Instruments OPA858IDSGT	J-FET	Single-Ended				105 mA	2000 V/µs						5.25 V	5.5 GHz	0.4 pA	8-WFDFN Exposed Pad	8-WSON (2x2)	21 mA	Surface Mount	1	800 µV	125 °C	-40 °C	3.3 V
Texas Instruments OPA858IDSGR	J-FET	Single-Ended				105 mA	2000 V/µs						5.25 V	5.5 GHz	0.4 pA	8-WFDFN Exposed Pad	8-WSON (2x2)	21 mA	Surface Mount	1	800 µV	125 °C	-40 °C	3.3 V

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 4.68
		10	$ 4.23
		25	$ 4.03
		100	$ 3.50
	Digi-Reel®	1	$ 4.68
		10	$ 4.23
		25	$ 4.03
		100	$ 3.50
	Tape & Reel (TR)	250	$ 3.46
Texas Instruments	SMALL T&R	1	$ 5.10
		100	$ 4.16
		250	$ 3.27
		1000	$ 2.77

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.