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| 型號(hào)： | CS5374-CNZ |
| 廠商： | CIRRUS LOGIC INC |
| 元件分類： | 通信及網(wǎng)絡(luò) |
| 中文描述： | SPECIALTY TELECOM CIRCUIT, QCC48 |
| 封裝： | 7 X 7 MM, LEAD FREE, QFN-48 |
| 文件頁數(shù)： | 1/6頁 |
| 文件大?。?/td> | 538K |
| 代理商： | CS5374-CNZ |
Copyright Cirrus Logic, Inc. 2010
(All Rights Reserved)
Preliminary Product Information This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
Dual High-performance Amplifier & ΔΣ Modulator
Features
High Input Impedance Differential Amplifier
Ultra-low input bias: < 1 pA
Max signal amplitude: 5 Vpp differential
Fourth Order Delta-Sigma (
ΔΣ) Modulator
Signal Bandwidth: DC to 2 kHz
Common mode rejection: 110 dB CMRR
Differential Analog Input, Digital
ΔΣ Output
Multiplexed inputs: INA, INB, 800
Ω termination
Selectable Gain: 1x, 2x, 4x, 8x, 16x, 32x, 64x
Excellent Amplifier Noise Performance
1.5
μVpp between 0.1 Hz and 10 Hz
11 nV /
√Hz from 200 Hz to 2 kHz
High Modulator Dynamic Range
126 dB SNR @ 215 Hz BW (2 ms sampling)
123 dB SNR @ 430 Hz BW (1 ms sampling)
Low Total Harmonic Distortion
–118 dB THD typical (0.000126%)
–108 dB THD maximum (0.0004%)
Low Power Consumption
Normal operation: 6.5 mA per channel
Power down: 15
μA per channel max
Dual Power Supply Configuration
VA+ = +2.5 V; VA– = –2.5 V; VD = +3.3 V
Description
The CS5374 combines two marine seismic analog mea-
surement channels into one 7 mm x 7 mm QFN
package. Each measurement channel consists of a high
input impedance programmable gain differential amplifi-
er that buffers analog signals into a high-performance,
fourth-order
ΔΣ modulator. The low-noise ΔΣ modulator
converts the analog signal into a one-bit serial bit stream
suitable for the CS5376A digital filter.
Each amplifier has two sets of external inputs, INA and
INB, to simplify system design as inputs from a hydro-
phone sensor or the CS4373A test DAC. An internal
800
Ω termination can also be selected for noise tests.
Gain settings are binary weighted (1x, 2x, 4x, 8x, 16x,
32x, 64x) and match the CS4373A test DAC output at-
tenuation settings for full-scale testing at all gain ranges.
Both the input multiplexer and gain are set by registers
accessed through a standard SPI port.
Each fourth-order
ΔΣ modulator has very high dynamic
range combined with low total harmonic distortion and
low power consumption. It converts differential analog
signals from the amplifier to an oversampled
ΔΣ serial bit
stream which is decimated by the CS5376A digital filter
to a 24-bit output at the final output word rate.
ORDERING INFORMATION
See page 43.
INA1+
INB1+
MUX1
MUX2
INB1-
INA1-
GUARD1
+
-
+
40
0
Ω
400
Ω
INA2+
INB2+
INB2-
INA2-
+
-
+
4
00
Ω
400
Ω
Reset, Clock,
and
Synchronization
INR1-
VA+
MFLAG1
MCLK
MSYNC
MFLAG2
MDATA2
GAIN
1
GAI
N
2
GUARD2
INR2-
INR2+
4th Order
Modulator
4th Order
Modulator
INF1- INF1+INR1+
RST
SPITM Serial
Interface
SDI
SDO
SCLK
CS
INF2+
INF2-
OUT2-
OUT2+
OUT1+ OUT1-
CS5374
VA-
GND
VD
VREF-
VREF+
VA+
VA-
MDATA1
SEP '10
DS862F2
CS5374
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CS5376 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:CS5376 Rev. A Errata|Geophysical|A/D Converters |
| CS5376A | 制造商:CIRRUS 制造商全稱:Cirrus Logic 功能描述:Low-power, Multi-channel Decimation Filter |
| CS5376A_05 | 制造商:CIRRUS 制造商全稱:Cirrus Logic 功能描述:Low-power, Multi-channel Decimation Filter |
| CS5376A_08 | 制造商:CIRRUS 制造商全稱:Cirrus Logic 功能描述:Low-power, Multi-channel Decimation Filter |
| CS5376A-IQ | 功能描述:特殊用途放大器 LP Multi-Ch. Decimation Filter RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補(bǔ)償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel |
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