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| 型号： | AD7699BCPZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 1/28页 |
| 文件大小： | 0K |
| 描述： | IC ADC 8CH 16BIT 500KSPS 20LFCSP |
| 标准包装： | 1 |
| 位数： | 16 |
| 采样率（每秒）： | 500k |
| 数据接口： | DSP，MICROWIRE?，QSPI?，串行，SPI? |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 32mW |
| 电压电源： | 模拟和数字 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-VFQFN 裸露焊盘，CSP |
| 供应商设备封装： | 20-LFCSP-VQ |
| 包装： | 托盘 |
| 输入数目和类型： | 8 个单端，单极；4 个差分，单极；4 个差分，双极；4 个伪差分，双极 |
| 产品目录页面： | 778 (CN2011-ZH PDF) |
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16-Bit, 8-Channel,
500 kSPS PulSAR ADC
Data Sheet
Rev. B
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.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
www.analog.com
Fax: 781.461.3113
2008–2012 Analog Devices, Inc. All rights reserved.
FEATURES
16-bit resolution with no missing codes
8-channel multiplexer with choice of inputs
Unipolar single-ended
Differential (GND sense)
Pseudobipolar
Throughput: 500 kSPS
INL: ±0.5 LSB typical, ±1.5 LSB maximum (±23 ppm or FSR)
Dynamic range: 93.3 dB
SINAD: 91.5 dB @ 20 kHz
THD: 97 dB @ 20 kHz
Analog input range: 0 V to VREF with VREF up to VDD
Multiple reference types
Internal 4.096 V
External buffered (up to 4.096 V)
External (up to VDD)
Internal temperature sensor
Channel sequencer, selectable 1-pole filter, busy indicator
No pipeline delay, SAR architecture
Single-supply 5 V operation with
1.8 V to 5 V logic interface
Serial interface compatible with SPI, MICROWIRE,
QSPI, and DSP
Power dissipation
26 mW @ 500 kSPS
5.2 μW @ 100 SPS
Standby current: 50 nA
20-lead 4 mm × 4 mm LFCSP package
APPLICATIONS
Battery-powered equipment
Medical instruments: ECG/EKG
Mobile communications: GPS
Personal digital assistants
Power line monitoring
Data acquisition
Seismic data acquisition systems
Instrumentation
Process control
FUNCTIONAL BLOCK DIAGRAM
AD7699
REF
GND
VDD
VIO
DIN
SCK
SDO
CNV
1.8V
TO
VDD
5V
SEQUENCER
SPI SERIAL
INTERFACE
MUX
16-BIT SAR
ADC
BAND GAP
REF
TEMP
SENSOR
REFIN
IN0
IN1
IN4
IN5
IN6
IN7
IN3
IN2
COM
0.5V TO VDD
10F
ONE-POLE
LPF
0.5V TO 4.096V
0.1F
07
35
4-
0
01
Figure 1.
Table 1. Multichannel 14-/16-Bit PulSAR ADC
Type
Channels
250 kSPS
500 kSPS
ADC Driver
14-Bit
16-Bit
4
16-Bit
8
AD7699
GENERAL DESCRIPTION
The AD7699 is an 8-channel, 16-bit, charge redistribution
successive approximation register (SAR) analog-to-digital
converter (ADC) that operates from a single power supply, VDD.
The AD7699 contains all components for use in a multichannel,
low power data acquisition system, including a true 16-bit SAR
ADC with no missing codes; an 8-channel low crosstalk multip-
lexer useful for configuring the inputs as single-ended (with or
without ground sense), differential, or bipolar; an internal 4.096 V
low drift reference and buffer; a temperature sensor; a selectable
one-pole filter; and a sequencer that is useful when channels are
continuously scanned in order.
The AD7699 uses a simple serial port interface (SPI) for writing
to the configuration register and receiving conversion results.
The SPI interface uses a separate supply, VIO, which is set to the
host logic level. Power dissipation scales with throughput.
The AD7699 is housed in a tiny 20-lead LFCSP with operation
specified from 40°C to +85°C.
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