参数资料
| 型号： | AD7643BCPZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 1/28页 |
| 文件大小： | 0K |
| 描述： | IC ADC 18BIT DIFF W/REF 48LFCSP |
| 产品培训模块： | ADC Applications ADC Architectures ADC DC/AC Performance |
| 标准包装： | 1 |
| 系列： | PulSAR® |
| 位数： | 18 |
| 采样率（每秒）： | 1.25M |
| 数据接口： | 串行，并联 |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 80mW |
| 电压电源： | 模拟和数字 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 48-VFQFN 裸露焊盘，CSP |
| 供应商设备封装： | 48-LFCSP-VQ（7x7） |
| 包装： | 托盘 |
| 输入数目和类型： | 1 个差分，双极 |
| 配用： | EVAL-AD7643CBZ-ND - BOARD EVALUATION FOR AD7643 |
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18-Bit, 1.25 MSPS PulSAR ADC
AD7643
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other
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
www.analog.com
Fax: 781.461.3113
2006 Analog Devices, Inc. All rights reserved.
FEATURES
Throughput: 1.25 MSPS
INL: ±1.5 LSB typical, ±3 LSB maximum (±11 ppm of full scale)
18-bit resolution with no missing codes
Dynamic range: 95 dB typical
2.048 V internal reference: typical drift 8 ppm/°C; TEMP output
Differential input range: ±VREF (VREF up to 2.5 V)
No pipeline delay (SAR architecture)
Parallel (18-, 16-, or 8-bit bus) and serial 5 V/3.3 V/2.5 V interface
SPI/QSPI/MICROWIRE/DSP compatible
Single 2.5 V supply operation
Power dissipation
2 μW in power-down mode
Pb-free, 48-lead LQFP and 48-lead LFCSP_VQ
Pin compatible with the AD7641 and other PulSAR ADC’s
APPLICATIONS
Medical instruments
High speed data acquisition/high dynamic data acquisition
Digital signal processing
Spectrum analysis
Instrumentation
Communications
ATE
GENERAL DESCRIPTION
The AD7643 is an 18-bit, 1.25 MSPS, charge redistribution
SAR, fully differential, analog-to-digital converter (ADC) that
operates from a single 2.5 V power supply. The part contains a
high speed, 18-bit sampling ADC, an internal conversion clock,
an internal reference (and buffer), error correction circuits, and
both serial and parallel system interface ports. The part has no
latency and can be used in asynchronous rate applications. The
AD7643 is hardware factory calibrated and tested to ensure ac
parameters, such as signal-to-noise ratio (SNR), in addition to
the more traditional dc parameters of gain, offset, and linearity.
The AD7643 is only available in Pb-free packages with
operation specified from 40°C to +85°C.
FUNCTIONAL BLOCK DIAGRAM
18
CONTROL LOGIC AND
CALIBRATION CIRCUITRY
CLOCK
AD7643
DGND
DVDD
AVDD
AGND
REF REFGND
IN+
IN–
PD
RESET
PDBUF
REFBUFIN
PDREF
REF
TEMP
D[17:0]
BUSY
RD
CS
D0/OB/2C
OGND
OVDD
MODE1
MODE0
REF AMP
CNVST
SERIAL
PORT
PARALLEL
INTERFACE
SWITCHED
CAP DAC
06
024
-001
Figure 1.
Table 1. PulSAR 48-Lead Selection
Type/kSPS
100 to
250
500 to
570
650 to
1000
>1000
Pseudo
Differential
True Bipolar
True
Differential
AD7622,
18-Bit
Multichannel/
AD7643
Simultaneous
PRODUCT HIGHLIGHTS
1.
Fast Throughput.
The AD7643 is a 1.25 MSPS, charge redistribution,
18-bit SAR ADC.
2.
Superior Linearity.
The AD7643 has no missing 18-bit code.
3.
Internal Reference.
The AD7643 has a 2.048 V internal reference with a typical
drift of ±8 ppm/°C and an on-chip TEMP sensor.
4.
Single-Supply Operation.
The AD7643 operates from a 2.5 V single supply.
5.
Serial or Parallel Interface.
Versatile parallel (18-, 16-, or 8-bit bus) or 2-wire serial
interface arrangement compatible with 2.5 V, 3.3 V, or
5 V logic.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD7643BCPZRL | 功能描述:IC ADC 18BIT DIFF W/REF 48-LFCSP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:PulSAR® 标准包装:1 系列:- 位数:14 采样率（每秒）:83k 数据接口:串行，并联 转换器数目:1 功率耗散（最大）:95mW 电压电源:双 ± 工作温度:0°C ~ 70°C 安装类型:通孔 封装/外壳:28-DIP（0.600"，15.24mm） 供应商设备封装:28-PDIP 包装:管件 输入数目和类型:1 个单端，双极 |
| AD7643BSTZ | 功能描述:IC ADC 18BIT DIFFER W/REF 48LQFP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:PulSAR® 其它有关文件:TSA1204 View All Specifications 标准包装:1 系列:- 位数:12 采样率（每秒）:20M 数据接口:并联 转换器数目:2 功率耗散（最大）:155mW 电压电源:模拟和数字 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-TQFP 供应商设备封装:48-TQFP（7x7） 包装:Digi-Reel® 输入数目和类型:4 个单端，单极；2 个差分，单极 产品目录页面:1156 (CN2011-ZH PDF) 其它名称:497-5435-6 |
| AD7643BSTZRL | 功能描述:IC ADC 18BIT DIFFER W/REF 48LQFP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:PulSAR® 标准包装:1 系列:- 位数:14 采样率（每秒）:83k 数据接口:串行，并联 转换器数目:1 功率耗散（最大）:95mW 电压电源:双 ± 工作温度:0°C ~ 70°C 安装类型:通孔 封装/外壳:28-DIP（0.600"，15.24mm） 供应商设备封装:28-PDIP 包装:管件 输入数目和类型:1 个单端，双极 |
| AD7645AQ | 制造商:AD 制造商全称:Analog Devices 功能描述:12-Bit Buffered Miltiplying CMOS D/A Converter |
| AD7645BQ | 制造商:AD 制造商全称:Analog Devices 功能描述:12-Bit Buffered Miltiplying CMOS D/A Converter |
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