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CS5521-AP Datasheet

  • CS5521-AP

  • Cirrus Logic [16 BIT OR 24 BIT 2/4/8 CHANNEL ADCS WITH PGIA...

  • 903.50KB

  • CIRRUS

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CS5521/22/23/24/28
16-Bit or 24-Bit, 2/4/8-Channel ADCs with PGIA
Features
l
Low
General Description
The CS5521/22/23/24/28 are highly integrated
鈭單?/div>
Ana-
log-to-Digital Converters (ADCs) which use charge-
balance techniques to achieve 16-bit (CS5521/23) and
24-bit (CS5522/24/28) performance. The ADCs come as
either
two-channel
(CS5521/22),
four-channel
(CS5523/24), or eight-channel (CS5528) devices, and
include a low input current, chopper-stabilized instru-
mentation amplifier. To permit selectable input spans of
25 mV, 55 mV, 100 mV, 1 V, 2.5 V, and 5 V, the ADCs
include a PGA (programmable gain amplifier). To ac-
commodate ground-based thermocouple applications,
the devices include a Charge Pump Drive which pro-
vides a negative bias voltage to the on-chip amplifiers.
These devices also include a fourth order
鈭單?/div>
modulator
followed by a digital filter which provides eight selectable
output word rates. The digital filters are designed to settle
to full accuracy within one conversion cycle and when
operated at word rates below 30 Hz, they reject both 50
and 60 Hz interference.
These single supply products are ideal solutions for
measuring isolated and non-isolated, low-level signals in
process control applications.
Input Current (100 pA), Chopper
Stabilized Instrumentation Amplifier
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Scalable Input Span (Bipolar/Unipolar)
-
2.5V VREF: 25 mV, 55 mV, 100 mV, 1 V, 2.5 V,
5V
-
External: 10 V, 100 V
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Wide
V
REF
Input Range (+1 to +5 V)
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Fourth Order Delta-Sigma A/D Converter
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Easy to Use Three-wire Serial Interface Port
-
Programmable/Auto Channel Sequencer with
Conversion Data FIFO
-
Accessible Calibration Registers per Channel
-
Compatible with SPI
TM
and Microwire
TM
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System
and Self-Calibration
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Eight Selectable Word Rates
-
Up to 617 Hz (XIN = 200 kHz)
-
Single Conversion Settling
-
50/60 Hz 卤3 Hz Simultaneous Rejection
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Single
+5 V Power Supply Operation
-
Charge Pump Drive for Negative Supply
-
+3 to +5 V Digital Supply Operation
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Low
Power Consumption: 5.5 mW
ORDERING INFORMATION
See page 51.
VA+
AGND
VREF+ VREF-
X1
DGND
VD+
AIN1+
AIN1-
AIN2+
AIN2-
AIN3+
AIN3-
AIN4+
AIN4-
MUX
CS5524
Shown
X1
+
X20
X1
Programmable
Gain
Differential
4th Order
Digital Filter
Data
FIFO
Calibration
Register
Control
Register
CS
SCLK
SDI
SDO
鈭單?/div>
Modulator
Latch
NBV
CPD
A0 A1
Calibration
Memory
Calibration
碌
C
Clock
Gen.
Output
Register
XIN XOUT
P.O. Box 17847, Austin, Texas 78760
(512) 445 7222 FAX: (512) 445 7581
//www.cirrus.com
Copyright
漏
Cirrus Logic, Inc. 2000
(All Rights Reserved)
MAY 鈥?0
DS317F2
1

CS5521-AP PDF文件相关型号

CS5521-AS,CS5522-AS,CS5523-AP,CS5523-AS,CS5524-AP,CS5524-AS

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