- Product Introduction
Product Attributes
|
TYPE |
DESCRIPTION |
|---|---|
|
Category |
Integrated Circuits (ICs) Linear Amplifiers Instrumentation, Op Amps, Buffer Amps |
|
Mfr |
Analog Devices Inc. |
|
Series |
- |
|
Part Status |
Active |
|
Amplifier Type |
Differential |
|
Number of Circuits |
1 |
|
Output Type |
Differential |
|
Slew Rate |
95V/µs |
|
-3db Bandwidth |
260 MHz |
|
Current - Input Bias |
1.1 µA |
|
Voltage - Input Offset |
60 µV |
|
Current - Supply |
1.25mA |
|
Current - Output / Channel |
46 mA |
|
Voltage - Supply Span (Min) |
3 V |
|
Voltage - Supply Span (Max) |
7 V |
|
Operating Temperature |
-40°C ~ 125°C |
|
Mounting Type |
Surface Mount |
|
Package / Case |
16-VFQFN Exposed Pad, CSP |
|
Supplier Device Package |
16-LFCSP-VQ (3x3) |
|
Base Product Number |
ADA4940 |
General description
The ADA4940-1/ADA4940-2 are low noise, low distortion fullydifferential amplifiers with very low power consumption. Theyare an ideal choice for driving low power, high resolution, highperformance SAR and Σ-Δ analog-to-digital converters (ADCs)with resolutions up to 16 bits from dc to 1 MHz on only 1.25 mAof quiescent current. The adjustable level of the output commonmode voltage allows the ADA4940-1/ADA4940-2 to match theinput common-mode voltage of multiple ADCs. The internalcommon-mode feedback loop provides exceptional output balance,as well as suppression of even-order harmonic distortion products.With the ADA4940-1/ADA4940-2, differential gain configurationsare easily realized with a simple external feedback network offour resistors determining the closed-loop gain of the amplifier.The ADA4940-1/ADA4940-2 are fabricated using Analog Devices,Inc., SiGe complementary bipolar process, enabling them toachieve very low levels of distortion with an input voltage noiseof only 3.9 nV/√Hz. The low dc offset and excellent dynamicperformance of the ADA4940-1/ADA4940-2 make them wellsuited for a variety of data acquisition and signal processingapplications.
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