OPA1S2384 Series

250-MHz, CMOS Transimpedance Amplifier (TIA) with Integrated Switch and Buffer

Catalog

250-MHz, CMOS Transimpedance Amplifier (TIA) with Integrated Switch and Buffer

Part	Gain Bandwidth Product	Number of Circuits	Package / Case	Current - Input Bias	Voltage - Supply Span (Max) [Max]	Mounting Type	Amplifier Type	Voltage - Input Offset	Current - Supply	-3db Bandwidth	Output Type	Operating Temperature [Max]	Operating Temperature [Min]	Current - Output / Channel	Supplier Device Package	Slew Rate	Voltage - Supply Span (Min) [Min]	Supplied Contents	Board Type	Current - Supply (Main IC)	Voltage - Supply, Single/Dual (±) [Max]	Voltage - Supply, Single/Dual (±) [Min]	Utilized IC / Part	Channels per IC
Texas Instruments OPA1S2384IDRCT	100 MHz	2	10-VFDFN Exposed Pad	3 pA	5.5 V	Surface Mount	Transimpedance	2 mV	9.2 mA	250 MHz	Rail-to-Rail	85 °C	-40 °C	100 mA	10-VSON (3x3)	150 V/µs	2.7 V
Texas Instruments OPA1S2384EVM							Transimpedance				Rail-to-Rail Single-Ended			100 mA		150 V/µs		Board(s)	Fully Populated	9.2 mA	2.75 V 5.5 V	-1.35 V 2.7 V	OPA1S2384	2 - Dual

Catalog

250-MHz, CMOS Transimpedance Amplifier (TIA) with Integrated Switch and Buffer

Key Features

• Wide Bandwidth: 250 MHzHigh Slew Rate: 150 V/µsRail-to-Rail Input/Output (I/O)Fast SettlingLow Input Bias Current: 3 pAHigh Input Impedance: 1013Ω || 2 pFSPST Switch:Low On-Resistance: 4 ΩLow Charge Injection: 1 pCLow Leakage Current: 10 pAFlexible Configuration:Transimpedance GainExternal Hold CapacitorPost-GainSingle Supply: +2.7 V to +5.5 VQuiescent Current: 9.2 mASmall Package: 3-mm × 3-mm SON-10OPA1S2384: Internal Switch Active HighOPA1S2385: Internal Switch Active LowWide Bandwidth: 250 MHzHigh Slew Rate: 150 V/µsRail-to-Rail Input/Output (I/O)Fast SettlingLow Input Bias Current: 3 pAHigh Input Impedance: 1013Ω || 2 pFSPST Switch:Low On-Resistance: 4 ΩLow Charge Injection: 1 pCLow Leakage Current: 10 pAFlexible Configuration:Transimpedance GainExternal Hold CapacitorPost-GainSingle Supply: +2.7 V to +5.5 VQuiescent Current: 9.2 mASmall Package: 3-mm × 3-mm SON-10OPA1S2384: Internal Switch Active HighOPA1S2385: Internal Switch Active Low

Description

The OPA1S2384 and OPA1S2385 (OPA1S238x) combine high bandwidth, FET-input operational amplifiers with a fast SPST CMOS switch designed for applications that require the tracking and capturing of fast signals. By providing a 250-MHz gain bandwidth product and rail-to-rail input/output swings in single-supply operation, the OPA1S238x is capable of wideband transimpedance gain and large output signal swing simultaneously. Low input bias current and voltage noise (6 nV/√Hz) make it possible to amplify extremely low-level input signals for maximum signal-to-noise ratio. The characteristics of the OPA1S238x make this device ideally suited for use as a wideband photodiode amplifier. In addition, the CMOS switch and subsequent buffer amplifier allow the OPA1S238x to be easily configured as a fast sample-and-hold circuit. The external hold capacitor and post-gain options make the OPA1S238x easily adoptable to a wide range of speed and accuracy requirements. Note that the OPA1S2384 closes the internal switch with a logic-high signal, and the OPA1S2385 closes the internal switch with a logic-low signal. The OPA1S238x are optimized for low-voltage operation from as low as +2.7 V up to +5.5 V. These devices are specified for a temperature range of –40°C to +85°C. The OPA1S2384 and OPA1S2385 (OPA1S238x) combine high bandwidth, FET-input operational amplifiers with a fast SPST CMOS switch designed for applications that require the tracking and capturing of fast signals. By providing a 250-MHz gain bandwidth product and rail-to-rail input/output swings in single-supply operation, the OPA1S238x is capable of wideband transimpedance gain and large output signal swing simultaneously. Low input bias current and voltage noise (6 nV/√Hz) make it possible to amplify extremely low-level input signals for maximum signal-to-noise ratio. The characteristics of the OPA1S238x make this device ideally suited for use as a wideband photodiode amplifier. In addition, the CMOS switch and subsequent buffer amplifier allow the OPA1S238x to be easily configured as a fast sample-and-hold circuit. The external hold capacitor and post-gain options make the OPA1S238x easily adoptable to a wide range of speed and accuracy requirements. Note that the OPA1S2384 closes the internal switch with a logic-high signal, and the OPA1S2385 closes the internal switch with a logic-low signal. The OPA1S238x are optimized for low-voltage operation from as low as +2.7 V up to +5.5 V. These devices are specified for a temperature range of –40°C to +85°C.