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OPA3S328RGRT

CMOS Amplifier 2 Circuit Rail-to-Rail 20-VQFN (3.5x3.5)

Manufacturer:

Texas Instruments, Inc
Mfr.Part #:

OPA3S328RGRT
Datasheet:

OPA3S328RGRT Datasheet (PDF)
Amplifier Type:

CMOS
Number of Circuits:

2
Output Type:

Rail-to-Rail
Slew Rate:

30V/µs
EDA/CAD Models:

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OPA3S328RGRT General Description

The OPA3S328 is a precision, low-voltage, CMOS operational amplifier (op amp) with integrated switches that are optimized for flexible transimpedance applications. Low input bias current and low input capacitance allows for high-frequency transimpedance gains at low photocurrent operation (< 1 nA). The integrated switches, low offset, and rail-to-rail output performance of the OPA3S328 enable high accuracy across multiple decades of current values. Small packages, along with integrated switches, allow for selectable transimpedance gains and help reduce size for space-constrained applications.

The OPA3S328 features zero-crossover input technology, giving the flexibility for the input common-mode range to span the full supply range without offset deviations. The device provides enable-disable capability to allow for portable, handheld applications in test and measurement. When disabled, the OPA3S328 output impedance is typically 100 GΩ, allowing for wired-OR applications using multiple transimpedance channels.

Key Features

Precision operational amplifier with integrated switches for transimpedance applications
Wide bandwidth: 40 MHz
Low offset voltage: 60 µV (max)
Very low offset drift: 1 µV/°C (max)
Low input bias current: 0.2 pA
Rail-to-rail input and output
Zero-crossover input stage
Low voltage noise: 6.1 nV/√ Hz at 10 kHz
Low current noise: 0.125 pA/√ Hz at 10 kHz
Low leakage switches: 10 pA
Slew rate: 30 V/µs
Quiescent current: 3.8 mA per channel
Current in shutdown mode: 30 µA
Output impedance in shutdown mode: 100 GΩ
Single-supply voltage range: 2.2 V to 5.5 V
Unity-gain stable
Small packages:
- 20-lead, 3.5-mm x 3.5-mm VQFN
- 2.0-mm x 2.0-mm DSBGA

Specifications

Category	Integrated Circuits (ICs)LinearAmplifiersInstrumentation, OP Amps, Buffer Amps	Series	-
Amplifier Type	CMOS	Number of Circuits	2
Output Type	Rail-to-Rail	Slew Rate	30V/µs
Gain Bandwidth Product	40 MHz	Current - Input Bias	0.2 pA
Voltage - Input Offset	10 µV	Current - Supply	3.8mA (x2 Channels)
Current - Output / Channel	63 mA	Voltage - Supply Span (Min)	2.2 V
Voltage - Supply Span (Max)	5.5 V	Operating Temperature	-40°C ~ 125°C
Mounting Type	Surface Mount