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

SOT353

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AS333

1.8v, Micropower CMOS Zero-Drift Operational Amplifiers

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Description

The AS333 is a high precision operational amplifier designed with chopping stabilization technique which eliminates 1/f noise, and the cross over distortion presented in most RRIO amplifiers.

The AS333, RRIO amplifier (rail-to-rail input and output), provides not only maximum output voltage swing capability but also an extended 100mV common-mode voltage beyond the supply rail. The device is fully specified to operate from 1.8V to 5.5V single supply, or ±0.9V and ±2.5V dual supply applications.

The device features a good speed/power consumption ratio, offering 350kHz gain bandwidth while consuming only 17μA quiescent current. With the low input offset voltage 8μV and zero-drift offset voltage 0.02μV/°C, it is ideal for applications that require precision, especially for low power and high precision ones.

The AS333 is available in SOT25 and SOT353 packages, and 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)

Low Input Offset Voltage: 8μV (typ)
Zero Drift: 0.02μV/°C (typ)
01Hz to 10Hz Noise: 1.1μV_PP
Low Quiescent Current: 17μA (typ)
Supply Voltage: 1.8V to 5.5V
Rail-to-Rail Input and Output
- V_CM: 100mV Beyond Supply Rail @ V_CC = 1.8V to 5.5V
Unity Gain Stable up to 200pF C-Load
- Gain Bandwidth: 350kHz
Slew Rate 0.12V/μs (typ)
Operation Ambient Temperature Range: -40°C to +125°C
ESD Protection JESD 22, 4000V HBM (A114)
SOT25 and SOT353 Packages
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)

Battery-powered instruments
Handheld test equipment
Medical instrumentation
Low voltage current sensing
Sensor signal conditioning
Sensors interfaces
CO detectors, pressure sensors, smoke alarms, 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)	1.8 V
Maximum Supply Voltage (V)	5.5 V
Supply Current @ 5V (per Op Amp) (mA)	0.017 mA
Input Offset Voltage typ (mV)	0.008 mV
Input Bias Current typ (nA)	0.07 nA
Minimum Input Common Mode Voltage (V)	(V-) - 0.1 V
Maximum Input Common Mode Voltage (V)	(V+) + 0.1 V
Output Current Source (mA)	5 mA
Output Current Sink (mA)	25 mA
Rail-Rail	Input/Output
Operating Ambient Temperature Range (°C)	-40 to 125 °C

Technical Documents

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