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| 型号： | AD7709BRUZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 1/32页 |
| 文件大小： | 0K |
| 描述： | IC ADC 16BIT SIGMA-DELTA 24TSSOP |
| 标准包装： | 62 |
| 位数： | 16 |
| 采样率（每秒）： | 105 |
| 数据接口： | DSP，MICROWIRE?，QSPI?，串行，SPI? |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 3.75mW |
| 电压电源： | 单电源 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 24-TSSOP |
| 包装： | 管件 |
| 输入数目和类型： | 2 个差分，单极；2 个差分，双极；4 个伪差分，单极；4 个伪差分，双极 |
| 产品目录页面： | 778 (CN2011-ZH PDF) |
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a
AD7709
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective companies.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
2003 Analog Devices, Inc. All rights reserved.
REV. A
16-Bit - ADC with
Switchable Current Sources
FUNCTIONAL BLOCK DIAGRAM
VDD
IEXC1
8I
IEXC2
8I
IOUT1
IOUT2
IEXC3
I
OSCILLATOR
AND
PLL
XTAL2
REFIN1(–) REFIN2(–)
REFIN1(+) REFIN2(+)
XTAL1
DOUT
RESET
RDY
CS
SCLK
DIN
SERIAL
INTERFACE
AND
CONTROL
LOGIC
BUF
PGA
MUX
I/O PORT
VDD
16-BIT
-
ADC
AIN1
AIN2
AIN3/P3
AIN4/P4
AINCOM
AD7709
VDD
GND
PWRGND
P1/SW1 P2/SW2
I = 25 A
FEATURES
16-Bit
-
ADC
Programmable Gain Front End
Simultaneous 50 Hz and 60 Hz Rejection at 20 Hz
Update Rate
VREF Select Allows Absolute and Ratiometric
Measurement Capability
ISOURCE Select
16-Bit No Missing Codes
13-Bit p-p Resolution @ 20 Hz, 20 mV Range
16-Bit p-p Resolution @ 20 Hz, 2.56 V Range
INTERFACE
3-Wire Serial
SPI, QSPI, MICROWIRE, and DSP Compatible
Schmitt Trigger on SCLK
POWER
Specified for Single 3 V and 5 V Operation
Normal: 1.25 mA Typ @ 3 V
Power-Down: 7
A (32.768 kHz Crystal Running)
ON-CHIP FUNCTIONS
Rail-to-Rail Input Buffer and PGA
Selectable Reference Inputs
3 Switchable, Ratioed Current Sources for
VBE Measurements
4-Bit Digital I/O Port
Low-Side Power Switches
APPLICATIONS
Sensor Measurement
Temperature Measurement
Pressure Measurements
Weigh Scales
Portable Instrumentation
4–20 mA Loops
GENERAL DESCRIPTION
The AD7709 is a complete analog front end for low frequency
measurement applications. It contains a 16-bit - ADC, selectable
reference inputs, three switchable matched excitation current
sources, low-side power switches, and a digital I/O port. The
16-bit channel with PGA accepts fully differential, unipolar,
and bipolar input signal ranges from 1.024
REFIN/128 to
1.024
REFIN. It can be configured as two fully differential
input channels or four pseudo-differential input channels. Signals
can be converted directly from a transducer without the need for
signal conditioning.
The device operates from a 32.768 kHz crystal with an on-chip
PLL generating the required internal operating frequency. The
output data rate from the part is software programmable. The
p-p resolution from the part varies with the programmed gain
and output data rate.
The part operates from a single 3 V or 5 V supply. When
operating from 3 V supplies, the power dissipation for the part
is 3.75 mW. The AD7709 is housed in a 24-lead TSSOP package.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD7709BRUZ | 制造商:Analog Devices 功能描述:IC ADC 16-BIT SIGMA DELTA |
| AD7709BRUZ-REEL | 功能描述:IC ADC 16BIT SIGMA-DELTA 24TSSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:16 采样率（每秒）:45k 数据接口:串行 转换器数目:2 功率耗散（最大）:315mW 电压电源:模拟和数字 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC W 包装:带卷 (TR) 输入数目和类型:2 个单端，单极 |
| AD7709BRUZ-REEL7 | 功能描述:IC ADC 16BIT SIGMA-DELTA 24TSSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:16 采样率（每秒）:45k 数据接口:串行 转换器数目:2 功率耗散（最大）:315mW 电压电源:模拟和数字 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC W 包装:带卷 (TR) 输入数目和类型:2 个单端，单极 |
| AD770JD | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog-to-Digital Converter， 8-Bit |
| AD770KD | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog-to-Digital Converter， 8-Bit |
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