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CS5503-BSZ Datasheet(PDF) 1 Page - Cirrus Logic

No. de pieza CS5503-BSZ
Descripción Electrónicos  Non-aliasing, 16- & 20-bit A/D Converters
Download  54 Pages
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Fabricante Electrónico  CIRRUS [Cirrus Logic]
Página de inicio  http://www.cirrus.com
Logo CIRRUS - Cirrus Logic

CS5503-BSZ Datasheet(HTML) 1 Page - Cirrus Logic

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1
Copyright
 Cirrus Logic, Inc. 2003
(All Rights Reserved)
Cirrus Logic, Inc.
www.cirrus.com
CS5501
CS5503
16 & 20-Bit A/D Converter
Features
Monolithic CMOS ADC with Filtering
- 6-pole, Low-pass Gaussian Filter
Up to 4 kHz Output Word Rates
- On Chip Self-calibration Circuitry
- Linearity Error: ±0.0003%
- Differential Nonlinearity:
CS5501: 16-bit, No Missing Codes
(DNL ±1/8 LSB)
CS5503: 20-bit, No Missing Codes
System Calibration Capability
Flexible Serial Communications Port
- Microcontroller-compatible Formats
- 3-state Data and Clock Outputs
- UART Format (CS5501 only)
Pin-selectable Unipolar/Bipolar Ranges
Low Power Consumption: 25 mW
- 10 µW Sleep Mode for Portable Applications
Description
The CS5501 and CS5503 are CMOS A/D converters
ideal for measuring low-frequency signals representing
physical, chemical, and biological processes. They uti-
lize
charge-balance
techniques
to
achieve
16-bit
(CS5501) and 20-bit (CS5503) performance with up to 4
kSps word rates.
The converters continuously sample at a rate set by the
user in the form of either a CMOS clock or a crystal. On-
chip digital filtering processes the data and updates the
output register at up to a 4 kSps rate. The converters' low-
pass, 6-pole Gaussian response filter is designed to al-
low corner frequency settings from 0.1 Hz to 10 Hz in the
CS5501 and 0.5 Hz to 10 Hz in the CS5503. Thus, each
converter rejects 50 Hz and 60 Hz line frequencies as
well as any noise at spurious frequencies.
The CS5501 and CS5503 include on-chip self-calibra-
tion circuitry which can be initiated at any time or
temperature to insure offset and full-scale errors of typi-
cally less than 1/2 LSB for the CS5501 and less than
4 LSB for the CS5503. The devices can also be applied
in system calibration schemes to null offset and gain er-
rors in the input channel.
Each device's serial port offers two general purpose
modes of operation for direct interface to shift registers
or synchronous serial ports of industry-standard micro-
controllers. In addition, the CS5501's serial port offers a
third,
UART-compatible
mode
of
asynchronous
communication.
ORDERING INFORMATION
See page 33.
I
Calibration
CAL
AIN
AGND
DGND
BP/UPSLEEP
SRAM
SC1
SC2
Calibration
Microcontroller
Analog
Modulator
6-Pole Gaussian
Low-Pass Digital Filter
Charge-Balanced A/D Converter
Clock Generator Serial Interface Logic
VA+
VA-
VD+
VD-
SDATA
CLKOUTCLKIN
DRDY CS MODESCLK
VREF
10
9
8
5
12
11
4
13
14
7
15
6
20
23
18
16
1
19
SEP
‘04
DS31F4
Copyright
© Cirrus Logic, Inc. 2005
(All Rights Reserved)
http://www.cirrus.com
CS5501
CS5503
Non-aliasing, 16- & 20-bit A/D Converters
I
AUG ‘05
DS31F5
Charge-balanced A/D Converter
Calibration
SRAM
Calibration
Microcontroller
6-pole Gaussian
Low-pass Digital Filter
Analog
Modulator
Clock Generator
Serial Interface Logic
VREF
BP/UP SLEEP
AIN
AGND
DGND
CAL
VA+
VD+
VD-
VA-
SDATA
DRDY
CS
MODE SCLK
CLKIN
CLKOUT
SC1
SC2
10
9
8
5
13
7
15
14
6
20
12
11
4
17
32
18
16
1
19
CS5501
CS5503


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