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AD7621ACPZ1 PDF预览

AD7621ACPZ1

更新时间: 2024-11-09 12:41:35
品牌 Logo 应用领域
亚德诺 - ADI /
页数 文件大小 规格书
32页 619K
描述
16-Bit, 2 LSB INL, 3 MSPS PulSAR® ADC

AD7621ACPZ1 数据手册

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16-Bit, 2 LSB INL, 3 MSPS PulSAR® ADC  
AD7621  
FEATURES  
Throughput  
FUNCTIONAL BLOCK DIAGRAM  
TEMP REFBUFIN REF REFGND  
DVDD DGND  
3 MSPS (wideband warp and warp mode)  
2 MSPS (normal mode)  
1.25 MSPS (impulse mode)  
AGND  
AVDD  
OVDD  
OGND  
AD7621  
REF  
REF AMP  
SERIAL  
PORT  
2.048 V internal reference  
16  
IN+  
IN–  
SWITCHED  
CAP DAC  
Differential input range: VREF (VREF up to 2.5 V)  
INL: 2 LSB maximum, 1 LSB typical  
16-bit resolution with no missing codes  
SINAD: 89 dB typical @ 100 kHz  
THD: 101 dB typical @ 100 kHz  
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  
2.5 V single-supply operation  
D[15:0]  
SER/PAR  
BUSY  
PARALLEL  
INTERFACE  
PDREF  
PDBUF  
PD  
RD  
CLOCK  
CS  
CONTROL LOGIC AND  
CALIBRATION CIRCUITRY  
OB/2C  
BYTESWAP  
RESET  
WARP  
IMPULSE CNVST  
Figure 1.  
Power dissipation: 65 mW typical @ 3 MSPS  
48-lead LQFP and 48-lead LFCSP_VQ packages  
Speed upgrade of the AD7677  
Table 1. PulSAR Selection  
800 to  
100 to 250 500 to 570 1000  
AD7651 AD7650/52 AD7653  
AD7660/61 AD7664/66 AD7667  
Type/kSPS  
>1000  
Pseudo  
Differential  
APPLICATIONS  
Medical instruments  
High speed data acquisition  
Digital signal processing  
Communications  
Instrumentation  
True Bipolar  
True  
Differential  
18-Bit  
Multichannel/  
Simultaneous  
AD7663  
AD7665  
AD7671  
AD7675  
AD7678  
AD7676  
AD7679  
AD7677 AD7621  
AD7674 AD7641  
Spectrum analysis  
ATE  
AD7654  
AD7655  
GENERAL DESCRIPTION  
PRODUCT HIGHLIGHTS  
1. Fast Throughput.  
The AD7621 is a 16-bit, 3 MSPS, charge redistribution SAR,  
fully differential analog-to-digital converter (ADC) that  
operates from a single 2.5 V power supply. It 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), a  
fast mode (normal) for asynchronous rate applications, and a  
reduced power mode (impulse) for low power applications  
where the power is scaled with the throughput. Operation is  
specified from −40°C to +85°C.  
The AD7621 is a 3 MSPS, charge redistribution,  
16-bit SAR ADC.  
2. Superior Linearity.  
The AD7621 has no missing 16-bit code.  
3. Internal Reference.  
The AD7621 has a 2.048 V internal reference with a  
typical drift of 7 ppm/°C.  
4. Single-Supply Operation.  
The AD7621 operates from a 2.5 V single supply and  
typically dissipates 65 mW. In impulse mode, its power  
dissipation decreases with the throughput.  
5. Serial or Parallel Interface.  
Versatile parallel (16- or 8-bit bus) or 2-wire serial interface  
arrangement compatible with 2.5 V, 3.3 V, or 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: 781.461.3113  
www.analog.com  
©2005 Analog Devices, Inc. All rights reserved.  

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