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參數(shù)資料
| 型號： | AD7694BRM |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | ADC |
| 英文描述： | 16-Bit, 250 kSPS PulSAR ADC in MSOP |
| 中文描述： | 1-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8 |
| 封裝： | MSOP-8 |
| 文件頁數(shù)： | 1/16頁 |
| 文件大小： | 281K |
| 代理商： | AD7694BRM |
16-Bit, 250 kSPS PulSAR
ADC in MSOP
AD7694
FEATURES
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
2004 Analog Devices, Inc. All rights reserved.
www.analog.com
16-bit resolution with no missing codes
Throughput: 250 kSPS @ 5 V
INL: ±4 LSB max
S/(N + D): 92 dB @ 20 kHz
THD: –106 dB @ 20 kHz
Pseudo-differential analog input range:
0 V to V
REF
with V
REF
up to VDD
No pipeline delay
Single-supply operation: 2.7 V or 5 V
Serial interface SPI/QSPI/MICROWIRE/DSP-compatible
Supply Current: 540 μA @ 2.7 V/100 kSPS,
800 μA @ 5 V/100 kSPS
Standby current: 1 nA
8-lead MSOP package
Improved 2
nd
Source to LTC1864 and LTC1864L
APPLICATIONS
Battery-powered equipment
Data acquisition
Instrumentation
Medical instruments
Process control
APPLICATION DIAGRAM
AD7694
REF
GND
VDD
IN+
IN–
SCK
SDO
CNV
3-WIRE SPI
INTERFACE
1V TO VDD
2.5V TO 5V
0 TO V
REF
0
Figure 1.
Table 1. MSOP, QFN (LFCSP)/SOT-23, 16-Bit PulSAR ADC
Type
100 kSPS
True Differential
AD7684
Pseudo
Differential/Unipolar
Unipolar
AD7680
250 kSPS
AD7687
AD7685
AD7694
500 kSPS
AD7688
AD7686
AD7683
GENERAL DESCRIPTION
The AD7694 is a 16-bit, charge redistribution, successive
approximation, PulSAR analog-to-digital converter (ADC)
that operates from a single power supply, VDD, between 2.7 V
to 5.25 V. It contains a low power, high speed, 16-bit sampling
ADC with no missing codes (B grade), an internal conversion
clock, and a serial, SPI-compatible interface port. The part also
contains a low noise, wide bandwidth, short aperture delay
track-and-hold circuit. On the CNV rising edge, it 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.
Its power scales linearly with throughput.
The AD7694 is housed in an 8-lead MSOP package with an
operating temperature specified from 40°C to +85°C.
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