Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details. SOT25

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AS348

Low Noise, Low Power, 1MHz, RRIO Single / Dual CMOS Operational Amplifiers

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Description

The AS348/AS2348 are single/dual channels RRIO amplifiers (rail-to-rail input and output), which provide not only maximum output-voltage swing capability but also an extended 300mV common-mode voltage beyond the supply rail. The devices are fully specified to operate from 1.6V to 5.5V single-supply, or ±0.8V and ±2.5V dual-supply applications.

The devices feature a good speed/power consumption ratio, offering 1MHz gain bandwidth while consuming 70μA per channel (typ). They are unity-gain stable for capacitive loads up to 100pF. The low noise density 27nV/√Hz, low input offset voltage 0.5mV and low input offset drift 2μV/°C make them ideal for applications that require precision. With the input bias current is 1pA at room temperature, it is well suitable for low-voltage, low-noise, and low-power applications.

The AS348/AS2348 offer industry-standard packages. The AS348 is available in the SOT25 package, and the AS2348 is offered in the MSOP-8 and SO-8 packages. Temperature is specified for operation: from -40°C to +125°C among all supply voltages. The wide temperature ranges and high ESD tolerance facilitate their use in harsh applications.

Feature(s)

Single-Supply Voltage Range: 1.6V to 5.5V
Dual-Supply Voltage Range: ±0.8V to ±2.5V
Ultra-Low Input Bias Current: 1pA (typ)
Offset Voltage: 0.5mV (typ), 2.5mV (max)
Low Input Offset Drift: 2μV/°C (typ)
Rail-to-Rail Input

V_CM: 300mV Beyond Supply Rail @ V_CC = 3V or 5V

Rail-to-Rail Output Swing:

10kΩ Load: 4mV from Rail

1kΩ Load: 25mV from Rail

Supply Current: 70μA/Channel (typ)
Unity-Gain Stable up to 100pF Capacitive Load Gain Bandwidth: 1.0MHz
Slew Rate: 0.45V/μs @ V_CC = 5.0V
Operation Ambient Temperature Range: -40°C to +125°C
ESD Protection JESD 22, 4000V HBM (A114)
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/104/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. https://www.diodes.com/quality/product-definitions/

Application(s)

Active filters
Sensors interfaces
Photodiode amplification
Smoke alarms, CO detectors
Battery-powered applications
Portable equipment
Medical instrumentation
Pulse blood oximeters, glucose meters

Specifications & Technical Documents

Product Parameters

Compliance (Only Automotive Supports PPAP)	Standard
AEC Qualified	No
Number of Channels	1
Minimum Supply Voltage (V)	1.6 V
Maximum Supply Voltage (V)	5.5 V
Supply Current @ 5V (per Op Amp) (mA)	0.07 mA
Input Offset Voltage typ (mV)	0.5 mV
Input Bias Current typ (nA)	0.001 nA
Minimum Input Common Mode Voltage (V)	-0.2 V
Maximum Input Common Mode Voltage (V)	1.8 V
Output Current Source (mA)	7 mA
Output Current Sink (mA)	8 mA
Rail-Rail	Yes
Operating Ambient Temperature Range (°C)	-40 to 125 °C

Technical Documents

LIB Files

AS384.LIB.zip (4 KB)

Recommended Soldering Techniques

TN1.pdf

Purchase & Availability

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Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN #	Issue Date	Implementation Date	Subject
PCN-2770	2025-10-30	2025-10-30	Add Fab Site Code, Country of Diffusion (COD) and Assembly Site Origin (ASO) on Product and Shipping Labels for all Diodes Products