AS1540 Datasheet PDF | austriamicrosystems AG

austriamicrosystems AG AS1540

The AS1538/AS1540 are single-supply, low-power, 12bit data acquisition devices featuring a serial I²C interface and an 8-channel (AS1538) or 4-channel (AS1540) multiplexer. The analog-to-digital (A/D) converters features a sample-and-hold amplifier an internal asynchronous clock and an internal reference. The combination of an I C serial, 2-wire interface and micropower consumption makes the AS1538 and AS1540 ideal for applications requiring the A/D converter to be close to the input source in remote locations and for applications requiring isolation.

Part No.	AS1540
Datasheet	AS1540 Download
Manufacturer	austriamicrosystems AG
Description	12-Bit I2C Analog-to-Digital Converter
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GENERAL DESCRIPTION

The device is available in a TSSOP-16 or TQFN 4x4 16pin package. 2 2 Key

FEATURES

! ! ! ! ! ! ! ! ! Single Supply: 2.7 to 5.25V 8-Channel Multiplexer (AS1538) 4-Channel Multiplexer (AS1540) Sampling Rate: 50kSPS No Missing Codes Internal Reference: 2.5V High Speed I C Interface at 3.4MHz <1.5µA Full Shutdown Current TSSOP-16 or TQFN 4x4 16-pin Package 2 3

APPLICATIONS

The device is ideal for voltage-supply monitoring, isolated data acquisition, transducer interfaces, batteryoperated systems, remote data acquisition or any other analog-to-digital conversion application. Figure 1. Block Diagram CH0 CH1 CH2 CH3 CH4 CH5 AS1538 only CH6 CH7 COM 8-Channel MUX Sample/ Hold Amp Successive Approximation Register Serial Interface SDA SCL A0 A1 AS1538/AS1540 CDAC Comparator REFIN/OUT Buffer Internal 2.5V Reference GND Revision 1.03 1 - 20 AS1538/AS1540 Data Sheet - P i n o u t 4 Pinout Pin Assignments Figure 2. Pin Assignments (Top View) +VDD SDA CH0 N/C CH0 1 CH1 2 CH2 3 CH3...

AS1540 Datasheets by Manufacturer

1 datasheets

Part Number	Manufacturer
AS1540	austriamicrosystems AG