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參數(shù)資料
| 型號(hào)： | CS5181 |
| 廠商： | Cirrus Logic, Inc. |
| 英文描述： | ∑△Modulator & 400KHz to 625KHz 16-Bit ADC(∑△調(diào)節(jié)器從400KHz到625KHz的16位A/D轉(zhuǎn)換器) |
| 中文描述： | Σ△調(diào)制器 |
| 文件頁(yè)數(shù)： | 1/26頁(yè) |
| 文件大小： | 847K |
| 代理商： | CS5181 |
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1
Copyright
Cirrus Logic, Inc. 1999
(All Rights Reserved)
Cirrus Logic, Inc.
P.O. Box 17847, Austin, Texas 78760
(512) 445 7222 FAX: (512) 445 7581
http://www.crystal.com
Preliminary Product Information
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
CS5181
Σ
Modulator & 400 kHz to 625 kHz 16-Bit ADC
Features
l
16-Bit Delta-Sigma A/D Converter
l
Fully Differential Input with 4.0 V
pp
Range
l
Dynamic Range: 93 dB
l
Spurious Free Dynamic Range: 90 dBc
l
Harmonic Distortion: 89 dB
l
Up to 625 kHz Output Word Rate
l
No Missing Codes
l
Non-Aliasing Low-Pass Digital Filter
l
High Speed 3-Wire Serial Interface
l
Supply Requirements:
-
VA+ = 5 V, VD+ = 3.3 V: 570 mW
l
Modulator Output Mode
l
Power-Down Mode
Description
CS5181 is a fully calibrated high-speed
Σ
analog-to-
digital converter, capable of 625 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 CS5181s can be fully synchronized
in multi-channel applications with a sync signal. The part
has a power-down mode to minimize power consump-
tion at times of system inactivity. The high speed digital
I/O lines have complementary signals to help reduce ra-
diated noise from traces on the PC board layout. The
CS5181 can also be operated in modulator-only mode
which provides the delta-sigma modulator bitstream as
the output.
ORDERING INFORMATION
CS5181-BL
CS5181-BQ
-40 °C to +85 °C
-40 °C to +85 °C
28-pin PLCC
44-pin TQFP
I
AIN+
AIN-
VREF+
VREFIN
VREFOUT
VREFCAP
PWDN
SYNC RESET MODE
VA+
AGND
VD+
DGND
MCLK
MCLK
MFLAG
SDO
SDO
SCLK
SCLK
FSO
Decimator
Clock
x1.6
Reference
Timing
and
Control
Serial
Interface
Σ
Modulator
VREF-
Mode
Selector
APR ‘99
DS250PP1
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