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AD7655ASTZ

更新时间： 2024-11-09 12:52:39
品牌 Logo 应用领域
亚德诺 - ADI 转换器模数转换器PC
页数 文件大小 规格书
28页 542K
描述
Low Cost, 4-Channel, 16-Bit 1 MSPS PulSAR® ADC

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AD7655ASTZ 数据手册

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Low Cost, 4-Channel, 16-Bit 1 MSPS  
PulSAR® ADC  
AD7655  
FUNCTIONAL BLOCK DIAGRAM  
FEATURES  
AVDD AGND  
REFGND REFx  
DVDD DGND  
4-channel, 16-bit resolution ADC  
2 track-and-hold amplifiers  
Throughput  
1 MSPS (normal mode)  
888 kSPS (impulse mode)  
Analog input voltage range: 0 V to 5 V  
No pipeline delay  
Parallel and serial 5 V/3 V interface  
SPI®/QSPI™/MICROWIRE™/DSP compatible  
Single 5 V supply operation  
TRACK/HOLD  
×2  
OVDD  
OGND  
D[15:0]  
INA1  
INAN  
INA2  
A0  
SERIAL  
PORT  
MUX  
MUX  
16  
SWITCHED  
CAP DAC  
MUX  
SER/PAR  
EOC  
INB1  
INBN  
INB2  
PD  
BUSY  
CS  
CLOCK  
PARALLEL  
INTERFACE  
CONTROL LOGIC AND  
CALIBRATION CIRCUITRY  
RD  
RESET  
A/B  
AD7655  
Power dissipation  
120 mW typical  
2.6 mW @ 10 kSPS  
BYTESWAP  
IMPULSE  
CNVST  
Package  
Figure 1.  
48-lead quad flat package (LQFP)  
48-lead frame chip scale package (LFCSP)  
Pin-to-pin compatible with the AD7654  
Low cost  
Table 1. PulSAR Selection  
800 to  
100 to 250 500 to 570 1000  
Type/kSPS  
>1000  
AD7660/  
AD7661  
AD7650/  
AD7652  
AD7664/  
AD7666  
AD7653  
AD7667  
Pseudo  
Differential  
APPLICATIONS  
AC motor control  
3-phase power control  
4-channel data acquisition  
Uninterrupted power supplies  
Communications  
AD7663  
AD7665  
AD7671  
AD7677  
True Bipolar  
AD7621  
AD7623  
True  
Differential  
18 Bit  
AD7675  
AD7678  
AD7676  
AD7679  
AD7654  
AD7674 AD7641  
AD7655  
Multichannel/  
Simultaneous  
GENERAL DESCRIPTION  
PRODUCT HIGHLIGHTS  
1. Multichannel ADC.  
The AD7655 is a low cost, simultaneous sampling, dual-  
channel, 16-bit, charge redistribution SAR, analog-to-digital  
converter that operates from a single 5 V power supply. It  
contains two low noise, wide bandwidth, track-and-hold  
amplifiers that allow simultaneous sampling, a high speed  
16-bit sampling ADC, an internal conversion clock, error  
correction circuits, and both serial and parallel system interface  
ports. Each track-and-hold has a multiplexer in front to provide  
a 4-channel input ADC. The A0 multiplexer control input  
allows the choice of simultaneously sampling input pairs  
INA1/INB1 (A0 = low) or INA2/INB2 (A0 = high). The part  
features a very high sampling rate mode (normal) and, for low  
power applications, a reduced power mode (impulse) where the  
power is scaled with the throughput. Operation is specified  
from −40°C to +85°C.  
The AD7655 features 4-channel inputs with two sample-  
and-hold circuits that allow simultaneous sampling.  
2. Fast Throughput.  
The AD7655 is a 1 MSPS, charge redistribution, 16-bit SAR  
ADC with internal error correction circuitry.  
3. Single-Supply Operation.  
The AD7655 operates from a single 5 V supply. In impulse  
mode, its power dissipation decreases with throughput.  
4. Serial or Parallel Interface.  
Versatile parallel or 2-wire serial interface arrangements  
are compatible with both 3 V and 5 V logic.  
Rev. B  
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. Specifications subject to change without notice. No  
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.  
Trademarks and registeredtrademarks arethe property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
Fax: 781.461.3113  
www.analog.com  
© 2005 Analog Devices, Inc. All rights reserved.  
 
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中文翻译

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AD7655ASTZ 替代型号

型号 品牌 替代类型 描述 数据表
AD7655AST ADI

完全替代

 Low Cost 4-Channel 1 MSPS 16-Bit ADC
AD7654AST ADI

完全替代

 Dual 2-Channel Simultaneous Sampling SAR 500 kSPS 16-Bit ADC
AD7654ASTZ ADI

类似代替

 16-Bit, 500 kSPS PulSAR® Dual, 2-Channel, Si

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