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| 型号： | EVAL-AD7734EBZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 1/32页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION FOR AD7734 |
| 标准包装： | 1 |
| ADC 的数量： | 1 |
| 位数： | 24 |
| 采样率（每秒）： | 15.4k |
| 数据接口： | 串行 |
| 输入范围： | ±10 V |
| 在以下条件下的电源（标准）： | 85mW @ 5V |
| 工作温度： | -40°C ~ 105°C |
| 已用 IC / 零件： | AD7734 |
| 已供物品： | 板，缆线，CD |
| 产品目录页面： | 779 (CN2011-ZH PDF) |
| 相关产品： | AD7734BRUZ-REEL7TR-ND - IC ADC 24BIT 4CH SIG-DEL 28TSSOP AD7734BRUZ-REEL-ND - IC ADC 24BIT 4CH SIG-DEL 28TSSOP AD7734BRUZ-ND - IC ADC 24BIT 4-CH 28-TSSOP AD7734BRU-ND - IC ADC 24BIT 4-CH 28-TSSOP |
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4-Channel, ±10 V Input Range, High
Throughput, 24-Bit ∑- ADC
Data Sheet
FEATURES
High resolution ADC
24 bits no missing codes
±0.0025% nonlinearity
Optimized for fast channel switching
18-bit p-p resolution (21 bits effective) at 500 Hz
16-bit p-p resolution (19 bits effective) at 2 kHz
14-bit p-p resolution (18 bits effective) at 15 kHz
On-chip per channel system calibration
4 single-ended analog inputs
Input ranges +5 V, ±5 V, +10 V, ±10 V
Overvoltage tolerant
Up to ±16.5 V not affecting adjacent channel
Up to ±50 V absolute maximum
3-wire serial interface
SPI, QSPI, MICROWIRE, and DSP compatible
Schmitt trigger on logic inputs
Single-supply operation
5 V analog supply
3 V or 5 V digital supply
Package: 28-lead TSSOP
APPLICATIONS
PLCs/DCS
Multiplexing applications
Process control
Industrial instrumentation
FUNCTIONAL BLOCK DIAGRAM
.
P0
SYNC/P1
AIN0
AIN2
AIN1
AIN3
BIASHI
BIASLO
SCLK
DIN
DOUT
CS
RESET
RDY
DGND
MCLKIN
MCLKOUT
AGND
AVDD
DVDD
BUFFER
REFERENCE
DETECT
REFIN(–)
REFIN(+)
AD7734
24-BIT
Σ ADC
SERIAL
INTERFACE
CONTROL
LOGIC
CLOCK
GENERATOR
CALIBRATION
CIRCUITRY
I/O PORT
MUX
Figure 1.
GENERAL DESCRIPTION
The AD7734 is a high precision, high throughput analog front
end. True 16-bit p-p resolution is achievable with a total
conversion time of 500 s (2 kHz channel switching), making it
ideally suitable for high resolution multiplexing applications.
The part can be configured via a simple digital interface, which
allows users to balance the noise performance against data
throughput up to a 15.4 kHz.
The analog front end features four single-ended input channels
with unipolar or true bipolar input ranges to ±10 V while
operating from a single +5 V analog supply. The part has an
overrange and underrange detection capability and accepts an
analog input overvoltage to ±16.5 V without degrading the
performance of the adjacent channels.
The differential reference input features “No-Reference” detect
capability. The ADC also supports per channel system calibra-
tion options. The digital serial interface can be configured for
3-wire operation and is compatible with microcontrollers and
digital signal processors. All interface inputs are Schmitt
triggered.
The part is specified for operation over the extended industrial
temperature range of –40°C to +105°C.
Other parts in the AD7734 family are the AD7732 and
the AD7738.
The AD7732 is similar to AD7734, but its analog front end
features two fully differential input channels.
The AD7738 analog front end is configurable for four fully
differential or eight single-ended input channels, features
0.625 V to 2.5 V bipolar/unipolar input ranges, and accepts a
common-mode input voltage from 200 mV to AVDD–300 mV.
The AD7738 multiplexer output is pinned out externally,
allowing the user to implement programmable gain or signal
conditioning before being applied to the ADC.
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
2003–2012 Analog Devices, Inc. All rights reserved.
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