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AD7686CRM

更新时间： 2024-09-16 12:36:11
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亚德诺 - ADI /
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28页 611K
描述
16-Bit, 500 kSPS PulSAR ADC in MSOP/QFN

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AD7686CRM 数据手册

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16-Bit, 500 kSPS PulSAR  
ADC in MSOP/QFN  
AD7686  
FUNCTIONAL BLOCK DIAGRAM  
FEATURES  
0.5V TO 5V  
5V  
16-bit resolution with no missing codes  
Throughput: 500 kSPS  
INL: 0.6 LSB typical, 2 LSB maximum ( 0.003% of FSR)  
SINAD: 92.5 dB @ 20 kHz  
THD: −110 dB @ 20 kHz  
Pseudo differential analog input range  
0 V to VREF with VREF up to VDD  
VIO  
SDI  
1.8V TO VDD  
REF VDD  
0 TO VREF  
IN+  
IN–  
SCK  
SDO  
CNV  
AD7686  
3- OR 4-WIRE INTERFACE  
(SPI, DAISY CHAIN, CS)  
GND  
No pipeline delay  
Single-supply 5 V operation with  
1.8 V/2.5 V/3 V/5 V logic interface  
Serial interface SPI®-/QSPI™-/MICROWIRE™-/DSP-compatible  
Daisy-chain multiple ADCs and busy indicator  
Power dissipation  
3.75 μW @ 5 V/100 SPS  
3.75 mW @ 5 V/100 kSPS  
Standby current: 1 nA  
Figure 2.  
Table 1. MSOP, QFN (LFCSP)/SOT-23  
14-/16-/18-Bit PulSAR ADC  
400 kSPS  
to  
500 kSPS kSPS  
100  
kSPS  
250  
1000  
ADC  
Driver  
Type  
kSPS  
18-Bit True  
Differential  
16-Bit True  
Differential  
AD7691 AD7690  
AD7982  
AD7982 ADA4941  
ADA4841  
10-lead MSOP (MSOP-8 size) and  
3 mm × 3 mm, 10-lead QFN (LFCSP) (SOT-23 size)  
Pin-for-pin-compatible with 10-lead MSOP/QFN PulSAR® ADCs  
AD7684 AD7687 AD7688  
AD7693  
ADA4941  
ADA4841  
16-Bit Pseudo AD7680 AD7685 AD7686  
Differential AD7683 AD7694  
AD7980 ADA4841  
APPLICATIONS  
Battery-powered equipment  
Data acquisitions  
14-Bit Pseudo AD7940 AD7942 AD7946  
Differential  
ADA4841  
Instrumentation  
Medical instruments  
Process controls  
GENERAL DESCRIPTION  
The AD7686 is a 16-bit, charge redistribution, successive  
approximation, analog-to-digital converter (ADC) that operates  
from a single 5 V power supply, VDD. 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 part also contains a low noise, wide bandwidth, short  
aperture delay track-and-hold circuit. On the CNV rising edge,  
the AD7686 samples an analog input IN+ between 0 V to REF  
with respect to a ground sense IN−. The reference voltage, REF,  
is applied externally and can be set up to the supply voltage.  
2.0  
POSITIVE INL = +0.52LSB  
NEGATIVE INL = –0.38LSB  
1.5  
1.0  
0.5  
0
–0.5  
–1.0  
Power dissipation scales linearly with throughput.  
The SPI-compatible serial interface also features the ability,  
using the SDI input, to daisy-chain several ADCs on a single,  
3-wire bus or provides an optional busy indicator. This device is  
compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic, using the separate  
supply VIO.  
–1.5  
–2.0  
0
16384  
32768  
CODE  
49152  
65535  
Figure 1. Integral Nonlinearity vs. Code  
The AD7686 is housed in a 10-lead MSOP or a 10-lead QFN  
(LFCSP) with operation specified from −40°C to +85°C.  
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  
www.analog.com  
Fax: 781.461.3113 ©2005–2007 Analog Devices, Inc. All rights reserved.  
 
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AD7686CRM 替代型号

型号 品牌 替代类型 描述 数据表
AD7686BRMZ ADI

完全替代

 16-Bit, 500 kSPS PulSAR ADC in MSOP
AD7693BRMZRL7 ADI

完全替代

 16-Bit, ±0.5 LSB, 500 kSPS PulSAR® Di
AD7693BRMZ ADI

完全替代

 16-Bit, ±0.5 LSB, 500 kSPS PulSAR® Differen

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