CS5180 Datasheet, PDF (1/28 Pages) Cirrus Logic – Modulator & 8 kHz to 400 kHz 16-Bit ADC

CS5180
∆Σ Modulator & 8 kHz to 400 kHz 16-Bit ADC
Features
16-Bit Delta-Sigma A/D Converter
Fully Differential Input with 4.0 V_pp Range
Dynamic Range: 93 dB
Spurious Free Dynamic Range: 96 dB
Total Harmonic Distortion: -95 dB @ 22 kHz
Up to 400 kHz Output Word Rate
No Missing Codes
Non-Aliasing Low-Pass Digital Filter
High Speed 3-Wire Serial Interface
Supply Options:
- VA+ = 5 V, VD+ = 5 V, 690 mW
- VA+ = 5 V, VD+ = 3 V, 368 mW
Modulator Output Mode
Power Down Mode
Description
CS5180 is a fully calibrated high-speed ∆Σ analog-to-
digital converter, capable of 400 kSamples/second out-
put word rate (OWR). The OWR scales with the master
clock. It consists of a 5th order ∆Σ modulator, decimation
filter, and serial interface. The chip can use the 2.375 V
on-chip voltage reference, or an external 2.5 V refer-
ence. The input voltage range is 1.6 × VREFIN V_pp fully
differential. Multiple CS5180s can be fully synchronized
in multi-channel applications with a SYNC signal. The
part has a power-down mode to minimize power con-
sumption at times of system inactivity. The high speed
digital I/O lines have complementary signals to help re-
duce radiated noise from traces on the PC board. The
CS5180 can also be operated in modulator-only mode
which provides the delta-sigma modulator bitstream as
the output.
ORDERING INFORMATION
CS5180-CL 0 °C to 70 °C
28-pin PLCC
I
VA+ AGND
VD+ DGND
AIN+
AIN-
VREF-
VREF+
VREFIN
∆Σ
Modulator
x1.6
VREFOUT
VREFCAP
Reference
Decimator
Clock
MCLK
MCLK
Mode
Selector
Timing
and
Control
Serial
Interface
MFLAG
SDO
SDO
SCLK
SCLK
FSO
PWDN
SYNC RESET MODE
Preliminary Product Information ^{Cirrus Logic reserves the right to modify this product without notice.}
P.O. Box 17847, Austin, Texas 78760
[phone] FAX: [phone]
http://www.cirrus.com
© Copyright Cirrus Logic, Inc. 2002
(All Rights Reserved)
APR ‘02
DS259PP4
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