Device

V

O

V

(V±)

C

(D)

R

(F)

10 M

C

(F)

(1)

l

< 1 pF

14

OPA2356-EP

SBOS955 – FEBRUARY 2019

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Copyright © 2019, Texas Instruments Incorporated

8 Application and Implementation

NOTE

Information in the following applications sections is not part of the TI component

specification, and TI does not warrant its accuracy or completeness. TI’s customers are

responsible for determining suitability of components for their purposes. Customers should

validate and test their design implementation to confirm system functionality.

8.1 Application Information

The OPA2356-EP is a CMOS, high-speed, voltage-feedback, operational amplifier (op amp) designed for

general-purpose applications.

The amplifier features a 200-MHz gain bandwidth and 300-V/μs slew rate, but the device is unity-gain stable and

operates as a 1-V/V voltage follower.

The input common-mode voltage range of the device includes ground, which allows the OPA2356-EP to be used

in virtually any single-supply application up to a supply voltage of 5.5 V.

8.2 Typical Applications

8.2.1 Transimpedance Amplifier

Wide gain bandwidth, low input bias current, low input voltage, and current noise make the OPA2356-EP a

preferred wideband photodiode transimpedance amplifier. Low-voltage noise is important because photodiode

capacitance causes the effective noise gain of the circuit to increase at high frequency.

The key elements to a transimpedance design, as shown in Figure 30, are the expected diode capacitance

(1)

Figure 30. Dual-Supply Transimpedance Amplifier

8.2.1.1 Design Requirements

PARAMETER

VALUE

2.5 V

–2.5 V