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AD7661ACP

更新时间： 2024-11-22 01:16:27
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16-Bit 100 kSPS PulSAR Unipolar ADC with Reference

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AD7661ACP 数据手册

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16-Bit 100 kSPS PulSAR®  
Unipolar ADC with Reference  
AD7661  
FUNCTIONAL BLOCK DIAGRAM  
FEATURES  
2.5 V internal reference: typical drift 3 ppm/°C  
Guaranteed max drift 15 ppm/°C  
REFBUFIN  
REF REFGND  
DVDD DGND  
OVDD  
OGND  
AGND  
AVDD  
AD7661  
Throughput: 100 kSPS  
SERIAL  
PORT  
REF  
INL: 2.5 LSB max ( 0.0038% of full scale)  
16-bit resolution with no missing codes  
S/(N+D): 88 dB min @ 20 kHz  
THD: –96 dB max @ 20 kHz  
Analog input voltage range: 0 V to 2.5 V  
Both AC and DC specifications  
No pipeline delay  
16  
IN  
SWITCHED  
CAP DAC  
DATA[15:0]  
BUSY  
INGND  
PARALLEL  
INTERFACE  
PDREF  
PDBUF  
RD  
CLOCK  
CS  
PD  
CONTROL LOGIC AND  
CALIBRATION CIRCUITRY  
SER/PAR  
RESET  
OB/2C  
Parallel and serial 5 V/3 V interface  
BYTESWAP  
SPI®/QSPITM/MICROWIRETM/DSP compatible  
Single 5 V supply operation  
CNVST  
Figure 1. Functional Block Diagram  
Power dissipation  
16 mW typ, 160 µW @ 1 kSPS without REF  
40 mW typ with REF  
48-lead LQFP and 48-lead LFCSP packages  
Pin-to-pin compatible with PulSAR ADCs  
Table 1. PulSAR Selection  
800–  
1000  
Type/kSPS  
100–250  
500–570  
Pseudo-  
AD7651  
AD7650/AD7652 AD7653  
Differential  
AD7660/AD7661 AD7664/AD7666 AD7667  
APPLICATIONS  
Data acquisition  
True Bipolar  
AD7663  
AD7675  
AD7665  
AD7676  
AD7671  
AD7677  
True  
Medical instruments  
Digital signal processing  
Spectrum analysis  
Instrumentation  
Differential  
18-Bit  
AD7678  
AD7679  
AD7654  
AD7655  
AD7674  
Multichannel/  
Simultaneous  
Battery-powered systems  
Process control  
PRODUCT HIGHLIGHTS  
1. Fast Throughput.  
The AD7661 is a 100 kSPS, charge redistribution, 16-bit  
SAR ADC with internal error correction circuitry.  
GENERAL DESCRIPTION  
The AD7661 is a 16-bit, 100 kSPS, charge redistribution SAR  
analog-to-digital converter that operates from a single 5 V  
power supply. The part contains a high speed 16-bit sampling  
ADC, an internal conversion clock, internal reference, error  
correction circuits, and both serial and parallel system inter-  
face ports. The AD7661 is hardware factory-calibrated and  
comprehensively tested to ensure ac parameters such as signal-  
to-noise ratio (SNR) and total harmonic distortion (THD), in  
addition to the more traditional dc parameters of gain, offset,  
and linearity.  
2. Superior INL.  
The AD7661 has a maximum integral nonlinearity of  
2.5 LSB with no missing 16-bit codes.  
3. Internal Reference.  
The AD7661 has an internal reference with a typical  
temperature drift of 3 ppm/°C.  
4. Single-Supply Operation.  
The AD7661 operates from a single 5 V supply. Its power  
dissipation decreases with throughput.  
The AD7661 is available in a 48-lead LQFP and a tiny 48-lead  
LFCSP with operation specified from –40°C to +85°C.  
5. Serial or Parallel Interface.  
Versatile parallel or 2-wire serial interface arrangement is  
compatible with both 3 V and 5 V logic.  
Rev. 0  
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  
registered trademarks are the property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
Fax: 781.326.8703  
www.analog.com  
© 2003 Analog Devices, Inc. All rights reserved.  
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AD7661ACP 替代型号

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AD7661ACPZ ADI

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 16-Bit, 100 kSPS PulSAR® Unipolar ADC with Ref

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