CS5550 Datasheet, PDF (1/24 Pages) Cirrus Logic – Two-channel, Low-cost A/D Converter

CS5550
Two-channel, Low-cost A/D Converter
Features
z Power Consumption <12 mW
- with VD+ = 3.3 V
z Adjustable Input Range on AIN1±
z GND-referenced Signals with Single Supply
z On-chip 2.5 V Reference (25 ppm/°C typ)
z Simple Three-wire Digital Serial Interface
z Power Supply Configurations
VA+ = +5 V; AGND = 0 V; VD+ = +3.3 V to +5 V
Description
The CS5550 combines two ∆Σ ADCs and a serial
interface on a single chip. The CS5550 has
on-chip functionality to facilitate offset and gain
calibration. The CS5550 features a bi-directional
serial interface for communication with a
microcontroller.
ORDERING INFORMATION:
CS5550-IS -40°C to +85°C
CS5550-ISZ -40°C to +85°C, Lead-free
24-pin SSOP
24-pin SSOP
VA+
RESET
VD+
AIN1+
AIN1-
+
10x,50x
-
4th Order ∆Σ
Modulator
AIN2+
AIN2-
+
10x
-
2nd Order ∆Σ
Modulator
Digital
Filter
Digital
Filter
Calibration
Registers
Config
Register
Output
Registers
Serial
Interface
CS
SDI
SDO
SCLK
INT
VREFIN
x1
VREFOUT
Voltage
Reference
AGND
Clock
Generator
XIN XOUT CPUCLK
DGND
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Copyright © Cirrus Logic, Inc. 2005
(All Rights Reserved)
MAR ‘05
DS630F1