参数资料
型号: AD7694ARMZ
厂商: Analog Devices Inc
文件页数: 1/16页
文件大小: 0K
描述: IC ADC 16BIT SAR 250KSPS 8MSOP
标准包装: 50
系列: PulSAR®
位数: 16
采样率(每秒): 250k
数据接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
转换器数目: 1
功率耗散(最大): 6.3mW
电压电源: 单电源
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 8-TSSOP,8-MSOP(0.118",3.00mm 宽)
供应商设备封装: 8-MSOP
包装: 管件
输入数目和类型: 1 个差分,单极
配用: EVAL-AD7694CBZ-ND - BOARD EVALUATION FOR AD7694
16-Bit, 250 kSPS PulSAR ADC in MSOP
AD7694
Rev. A
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responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother
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.Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
2005 Analog Devices, Inc. All rights reserved.
FEATURES
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 VREF with VREF 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 second source to LTC1864 and LTC1864L
APPLICATIONS
Battery-powered equipment
Data acquisition
Instrumentation
Medical instruments
Process control
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.
APPLICATION DIAGRAM
AD7694
REF
GND
VDD
IN+
IN–
SCK
SDO
CNV
3-WIRE SPI
INTERFACE
1V TO VDD
2.5V TO 5V
0 TO VREF
05003-001
Figure 1.
Table 1. MSOP, LFCSP (QFN)/SOT-23, 16-Bit PulSAR ADC
Type
100 kSPS
250 kSPS
500 kSPS
True Differential
Pseudo
Differential/Unipolar
Unipolar
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