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| 型号： | AD7710ARZ-REEL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 1/32页 |
| 文件大小： | 0K |
| 描述： | IC ADC 24BIT DIFF INP 24-SOIC |
| 标准包装： | 1,000 |
| 位数： | 24 |
| 采样率（每秒）： | 1.03k |
| 数据接口： | 串行 |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 45mW |
| 电压电源： | 模拟和数字，双 ± |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 24-SOIC W |
| 包装： | 带卷 (TR) |
| 输入数目和类型： | 2 个差分，单极；2 个差分，双极 |
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FUNCTIONAL BLOCK DIAGRAM
REV. G
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 owners.
a
Signal Conditioning ADC
AD7710
FEATURES
Charge Balancing ADC
24 Bits, No Missing Codes
0.0015% Nonlinearity
2-Channel Programmable Gain Front End
Gains from 1 to 128
Differential Inputs
Low-Pass Filter with Programmable Filter Cutoffs
Ability to Read/Write Calibration Coefficients
Bidirectional Microcontroller Serial Interface
Internal/External Reference Option
Single- or Dual-Supply Operation
Low Power (25 mW Typ) with Power-Down Mode
(7 mW Typ)
APPLICATIONS
Weigh Scales
Thermocouples
Process Control
Smart Transmitters
Chromatography
GENERAL DESCRIPTION
The AD7710 is a complete analog front end for low frequency
measurement applications. The device accepts low level signals
directly from a strain gage or transducer and outputs a serial
digital word. It employs a sigma-delta conversion technique to
realize up to 24 bits of no missing codes performance. The input
signal is applied to a proprietary programmable gain front end
based around an analog modulator. The modulator output is
processed by an on-chip digital filter. The first notch of this
digital filter can be programmed via the on-chip control register,
allowing adjustment of the filter cutoff and settling time.
The part features two differential analog inputs and a differen-
tial reference input. Typically, one of the channels will be used
as the main channel with the second channel used as an auxil-
iary input to measure a second voltage periodically. It can be
operated from a single supply (by tying the VSS pin to AGND),
provided that the input signals on the analog inputs are more
positive than –30 mV. By taking the VSS pin negative, the part
can convert signals down to –VREF on its inputs. The AD7710
thus performs all signal conditioning and conversion for a single-
or dual-channel system.
The AD7710 is ideal for use in smart, microcontroller based
systems. Input channel selection, gain settings, and signal polar-
ity can be configured in software using the bidirectional serial
port. The AD7710 contains self-calibration, system calibration,
and background calibration options, and also allows the user to
read and write the on-chip calibration registers.
CMOS construction ensures low power dissipation, and a soft-
ware programmable power-down mode reduces the standby
power consumption to only 7 mW typical. The part is available
in a 24-lead, 0.3 inch-wide, plastic and hermetic dual-in-line
package (DIP) as well as a 24-lead small outline (SOIC) package.
PRODUCT HIGHLIGHTS
1. The programmable gain front end allows the AD7710 to
accept input signals directly from a strain gage or transducer,
removing a considerable amount of signal conditioning.
2. The AD7710 is ideal for microcontroller or DSP processor
applications with an on-chip control register that allows
control over filter cutoff, input gain, channel selection, signal
polarity, and calibration modes.
3. The AD7710 allows the user to read and write the on-chip
calibration registers. This means that the microcontroller has
much greater control over the calibration procedure.
4. No missing codes ensures true, usable, 23-bit dynamic range
coupled with excellent
±0.0015% accuracy. The effects of
temperature drift are eliminated by on-chip self-calibration,
which removes zero-scale and full-scale errors.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
2004 Analog Devices, Inc. All rights reserved.
CLOCK
GENERATION
SERIAL INTERFACE
CONTROL
REGISTER
OUTPUT
REGISTER
CHARGE-BALANCING A/D
CONVERTER
DIGITAL
FILTER
AD7710
M
U
X
PGA
AGND DGND
MODE SDATA SCLK
A0
MCLK
OUT
MCLK
IN
AIN1(+)
AIN1(–)
REF
IN (–)
REF
IN (+)
SYNC
4.5 A
A = 1 – 128
DRDY
TFS
RFS
REF OUT
2.5V REFERENCE
AVDD
20 A
AIN2(+)
AIN2(–)
IOUT
VSS
VBIAS
AVDD
DVDD
AUTO-ZEROED
-
MODULATOR
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| AD7710ARZ-REEL7 | 功能描述:IC ADC 24BIT DIFF INP 24SOIC 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 系列:microPOWER™ 位数:8 采样率（每秒）:1M 数据接口:串行，SPI? 转换器数目:1 功率耗散（最大）:- 电压电源:模拟和数字 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:24-VFQFN 裸露焊盘 供应商设备封装:24-VQFN 裸露焊盘（4x4） 包装:Digi-Reel® 输入数目和类型:8 个单端，单极 产品目录页面:892 (CN2011-ZH PDF) 其它名称:296-25851-6 |
| AD7710SQ | 制造商:Analog Devices 功能描述:ADC SGL DELTA-SIGMA 1.028KSPS 24BIT SERL 24CDIP - Rail/Tube 制造商:Analog Devices 功能描述:IC ADC 24BIT DIFF INP 24-CDIP 制造商:Analog Devices 功能描述:IC ADC 24BIT SERIAL DIP-24 制造商:Analog Devices 功能描述:IC, ADC, 24BIT, SERIAL, DIP-24 制造商:Analog Devices Inc. 功能描述:Analog to Digital Converters - ADC 24 BIT SIGMA DELTA ADC IC 制造商:Analog Devices 功能描述:IC, ADC, 24BIT, SERIAL, DIP-24; Resolution (Bits):24bit; Supply Voltage Type:Single; Supply Voltage Min:5V; Supply Voltage Max:10V; Supply Current:4mA; Digital IC Case Style:DIP; No. of Pins:24; Input Channel Type:Differential 制造商:Analog Devices 功能描述:CONVERTER - ADC 制造商:Analog Devices 功能描述:ADC Single Delta-Sigma 1.028ksps 24-bit Serial 24-Pin CDIP |
| AD7710SQ/883B | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog-to-Digital Converter， 24-Bit |
| AD7711 | 制造商:AD 制造商全称:Analog Devices 功能描述:LC2MOS Signal Conditioning ADC with RTD Excitation Currents |
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