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AD7622BCPZ

更新时间： 2024-11-10 01:23:03
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亚德诺 - ADI /
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1.5 LSB INL, 2 MSPS PulSAR ADC

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AD7622BCPZ 数据手册

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16-Bit, 1.5 LSB INL, 2 MSPS PulSAR® ADC  
AD7622  
FUNCTIONAL BLOCK DIAGRAM  
FEATURES  
TEMP REFBUFIN REF REFGND  
DVDD DGND  
Throughput  
2 MSPS (wideband warp and warp mode)  
1.5 MSPS (normal mode)  
INL: 0.5 LSB typical, 1.5 LSB maximum ( 23 ppm of FSR)  
16-bit resolution with no missing codes  
Dynamic range: 92.5 dB typical  
SINAD: 91 dB minimum @ 20 kHz (VREF = 2.5 V)  
THD: −115 dB typical @ 20 kHz (VREF = 2.5 V)  
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 (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  
AGND  
AVDD  
OVDD  
OGND  
AD7622  
REF  
REF AMP  
SERIAL  
PORT  
16  
IN+  
IN–  
SWITCHED  
CAP DAC  
D[15:0]  
SER/PAR  
BUSY  
RD  
PARALLEL  
INTERFACE  
PDREF  
PDBUF  
PD  
CLOCK  
CS  
CONTROL LOGIC AND  
CALIBRATION CIRCUITRY  
OB/2C  
RESET  
BYTESWAP  
WARP  
NORMAL CNVST  
Figure 1.  
Power dissipation  
70 mW typical @ 2 MSPS with internal REF  
2 μW in power-down mode  
Pb-free, 48-lead LQFP and 48-lead LFCSP_VQ  
Pin compatible with other PulSAR 48-lead ADCs  
Table 1. PulSAR 48-Lead ADC Selection  
100 to  
250  
500 to  
570  
650 to  
1000  
Type/kSPS  
>1000  
Pseudo  
Differential  
AD7651,  
AD7660,  
AD7661  
AD7650,  
AD7652,  
AD7664,  
AD7666  
AD7653,  
AD7667  
APPLICATIONS  
Medical instruments  
High speed data acquisition/high dynamic data acquisition  
True Bipolar  
AD7610,  
AD7663  
AD7665  
AD7612,  
AD7671  
True  
Differential  
AD7675  
AD7676  
AD7677  
AD7621,  
AD7622,  
AD7623  
AD7641,  
AD7643  
Digital signal processing  
Spectrum analysis  
Instrumentation  
Communications  
ATE  
18-Bit  
Multichannel/  
Simultaneous  
AD7631,  
AD7678  
AD7679  
AD7654  
AD7634,  
AD7674  
AD7655  
GENERAL DESCRIPTION  
1.50  
POSITIVE INL = +0.43 LSB  
NEGATIVE INL = –0.49 LSB  
The AD7622 is a 16-bit, 2 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, 16-bit sampling ADC, an internal conversion clock,  
an internal reference (and buffer), error correction circuits, and  
both serial and parallel system interface ports. It features two  
very high sampling rate modes (wideband warp and warp) and  
a fast mode (normal) for asynchronous rate applications. The  
AD7622 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 AD7622 is available in Pb-free only packages with  
operation specified from −40°C to +85°C.  
1.00  
0.50  
0
–0.50  
–1.00  
–1.50  
0
16384  
32768  
CODE  
49152  
65536  
Figure 2. Integral Nonlinearity vs. Code  
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 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  
©2006 Analog Devices, Inc. All rights reserved.  
 
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AD7622BCPZ 替代型号

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AD7622BCPZRL ADI

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