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AD7687BCPZRL7

更新时间： 2024-11-21 15:31:51
品牌 Logo 应用领域
亚德诺 - ADI 光电二极管转换器
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27页 612K
描述
16-Bit, 1.5 LSB INL, 250 kSPS PulSAR™ Differential ADC in MSOP/QFN

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AD7687BCPZRL7 数据手册

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16-Bit, 1.5 LSB INL, 250 kSPS PulSAR  
Differential ADC in MSOP  
Data Sheet  
AD7687  
FEATURES  
TYPICAL APPLICATION CIRCUIT  
0.5V TO 5V  
2.5 TO 5V  
16-bit resolution with no missing codes  
Throughput: 250 kSPS  
INL: ±0.4 LSB typ, ±1.5 LSB max (±23 ppm of FSR)  
Dynamic range: 96.5 dB  
SNR: 95.5 dB at 20 kHz  
THD: −118 dB at 20 kHz  
True differential analog input range  
±±REF  
VREF  
0
VIO  
1.8V TO VDD  
REF VDD  
SDI  
SCK  
SDO  
CNV  
IN+  
AD7687  
3- OR 4-WIRE INTERFACE  
(SPI, DAISY CHAIN, CS)  
IN–  
VREF  
0
GND  
0 ± to ±REF with ±REF up to ±DD on both inputs  
No pipeline delay  
Figure 1.  
Single-supply 2.3 ± to 5.5 ± operation with  
1.8 ±/2.5 ±/3 ±/5 ± logic interface  
Proprietary serial interface: SPI/QSPI™/MICROWIRE/DSP  
compatible  
Daisy-chain multiple ADCs and BUSY indicator  
Power dissipation  
1.35 mW at 2.5 ±/100 kSPS, 4 mW at 5 ±/100 kSPS, and  
1.4 μW at 2.5 ±/100 SPS  
Standby current: 1 nA  
10-lead MSOP and 10-lead, 3 mm × 3 mm LFCSP  
Pin-for-pin compatible with AD7685, AD7686, and AD7688  
APPLICATIONS  
Battery-powered equipment  
Data acquisitions  
Instrumentation  
Medical instruments  
Process controls  
GENERAL DESCRIPTION  
The AD76871 is a 16-bit, charge redistribution, successive  
approximation, analog-to-digital converter (ADC) that operates  
from a single power supply, VDD, between 2.3 V to 5.5 V. It  
contains a low power, high speed, 16-bit sampling ADC with no  
missing codes, an internal conversion clock, and a versatile  
serial interface port. The device also contains a low noise, wide  
bandwidth, short aperture delay track-and-hold circuit. On the  
CNV rising edge, the AD7687 the samples the voltage difference  
The SPI-compatible serial interface also features the ability to  
daisy-chain several ADCs on a single 3-wire bus and provides  
an optional BUSY indicator by means of the SDI pin. It is  
compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic using the separate  
supply VIO.  
The AD7687 comes in a 10-lead MSOP or a 10-lead LFCSP  
with operation specified from −40°C to +85°C.  
between IN+ and IN− pins, which can range from −VREF to +VREF  
.
Table 1. MSOP, LFCSP/SOT-23 16-Bit PulSAR® ADC  
The reference voltage, VREF, is applied externally and can be set  
up to the supply voltage.  
Type  
100 kSPS  
AD7684  
AD7683  
250 kSPS  
AD7687  
AD7685  
AD7694  
500 kSPS  
AD7688  
AD7686  
True Differential  
Pseudo  
Differential/Unipolar  
Unipolar  
The power consumption of the device scales linearly with  
throughput.  
AD7680  
1 Protected by U.S. Patent 6,703,961.  
Rev. E  
Document Feedback  
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 ©2005–2015 Analog Devices, Inc. All rights reserved.  
Technical Support  
www.analog.com  
 
 
 
 
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AD7687BCPZRL7 替代型号

型号 品牌 替代类型 描述 数据表
AD7687BRMRL7 ADI

完全替代

 IC 1-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO10, MO-187BA, MSOP-10, Ana
AD7687BRMZRL7 ADI

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 16-Bit, 1.5 LSB INL, 250 kSPS PulSAR™ Differential ADC in MSOP/QFN

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