參數資料
| 型號： | CS5534-BSZR |
| 廠商： | Cirrus Logic Inc |
| 文件頁數： | 1/17頁 |
| 文件大小： | 0K |
| 描述： | IC ADC 24BIT 4CH W/LNA 24SSOP |
| 標準包裝： | 1,000 |
| 位數： | 24 |
| 采樣率（每秒）： | 3.84k |
| 數據接口： | 串行 |
| 轉換器數目： | 1 |
| 功率耗散（最大）： | 45mW |
| 電壓電源： | 模擬和數字，雙 ± |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 24-SSOP（0.209"，5.30mm 寬） |
| 供應商設備封裝： | 24-SSOP |
| 包裝： | 帶卷 (TR) |
| 輸入數目和類型： | 4 個差分，單極；4 個差分，雙極 |
| 配用： | 598-1016-ND - EVAL BOARD FOR CS5534 |
Copyright
Cirrus Logic, Inc. 2008
(All Rights Reserved)
CS5532/34-BS
24-bit
Σ ADCs with Ultra-low-noise PGIA
Features
Chopper-stabilized PGIA (Programmable
Gain Instrumentation Amplifier, 1x to 64x)
– 6 nV/
√Hz @ 0.1 Hz (No 1/f noise) at 64x
– 1200 pA Input Current with Gains >1
Delta-sigma Analog-to-digital Converter
– Linearity Error: 0.0007% FS
– Noise-free Resolution: Up to 23 bits
Two- or Four-channel Differential MUX
Scalable Input Span via Calibration
– ±5 mV to differential ±2.5V
Scalable VREF Input: Up to Analog Supply
Simple Three-wire Serial Interface
– SPI and Microwire Compatible
– Schmitt Trigger on Serial Clock (SCLK)
R/W Calibration Registers Per Channel
Selectable Word Rates: 6.25 to 3,840 Sps
Selectable 50 or 60 Hz Rejection
Power Supply Configurations
– VA+ = +5 V; VA- = 0 V; VD+ = +3 V to +5 V
– VA+ = +2.5 V; VA- = -2.5 V; VD+ = +3 V to +5 V
– VA+ = +3 V; VA- = -3 V; VD+ = +3 V
General Description
The CS5532/34 are highly integrated
Σ Analog-to-Digi-
tal Converters (ADCs) which use charge-balance
techniques to achieve 24-bit performance. The ADCs
are optimized for measuring low-level unipolar or bipolar
signals in weigh scale, process control, scientific, and
medical applications.
To accommodate these applications, the ADCs come as
either two-channel (CS5532) or four-channel (CS5534)
devices and include a very low-noise, chopper-stabilized
instrumentation amplifier (6 nV/
√Hz @ 0.1 Hz) with se-
lectable gains of 1×, 2×, 4×, 8×, 16×, 32×, and 64×.
These ADCs also include a fourth-order
Σ modulator
followed by a digital filter which provides twenty selectable
output word rates of 6.25, 7.5, 12.5, 15, 25, 30, 50, 60, 100,
120, 200, 240, 400, 480, 800, 960, 1600, 1920, 3200, and
3840 Sps (MCLK = 4.9152 MHz).
To ease communication between the ADCs and a micro-
controller, the converters include a simple three-wire se-
rial interface which is SPI and Microwire compatible
with a Schmitt-trigger input on the serial clock (SCLK).
High dynamic range, programmable output rates, and
flexible power supply options makes these ADCs ideal
solutions
for
weigh
scale
and
process
control
applications.
ORDERING INFORMATION
See page 47
VA+
C1
C2
VREF+
VREF-
VD+
DIFFERENTIAL
4TH ORDER
Σ
MODULATOR
PGIA
1,2,4,8,16
PROGRAMMABLE
SINC FIR FILTER
MUX
(CS5534
SHOWN)
AIN1+
AIN1-
AIN2+
AIN2-
AIN3+
AIN3-
AIN4+
AIN4-
SERIAL
INTERFACE
LATCH
CLOCK
GENERATOR
CALIBRATION
SRAM/CONTROL
LOGIC
DGND
CS
SDI
SDO
SCLK
OSC2
OSC1
A1
A0/GUARD
VA-
32,64
OCT ‘08
DS755F3
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