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参数资料
| 型号： | AD7920BRMZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 1/24页 |
| 文件大小： | 0K |
| 描述： | IC ADC 12BIT 250KSPS 8-MSOP |
| 标准包装： | 50 |
| 位数： | 12 |
| 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）： | 15mW |
| 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 个单端，单极 |
| 产品目录页面： | 779 (CN2011-ZH PDF) |
| 配用： | EVAL-AD7920CBZ-ND - BOARD EVALUATION FOR AD7920 |
250 kSPS,
10-/12-Bit ADCs in 6-Lead SC70
AD7910/AD7920
Rev. C
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other
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
2005 Analog Devices, Inc. All rights reserved.
FEATURES
Throughput rate: 250 kSPS
Specified for VDD of 2.35 V to 5.25 V
Low power
3.6 mW typ at 250 kSPS with 3 V supplies
12.5 mW typ at 250 kSPS with 5 V supplies
Wide input bandwidth
71 dB SNR at 100 kHz input frequency
Flexible power/serial clock speed management
No pipeline delays
High speed serial interface
SPI-/QSPI-/MICROWIRE-/DSP-compatible
Standby mode: 1 μA max
6-lead SC70 package
8-lead MSOP package
APPLICATIONS
Battery-powered systems
Personal digital assistants
Medical instruments
Mobile communications
Instrumentation and control systems
Data acquisition systems
High speed modems
Optical sensors
FUNCTIONAL BLOCK DIAGRAM
T/H
CONTROL LOGIC
10-/12-BIT
SUCCESSIVE
APPROXIMATION
ADC
GND
VDD
AD7910/AD7920
SDATA
SCLK
CS
VIN
02976-001
Figure 1.
GENERAL DESCRIPTION
The AD7910/AD79201 are, respectively, 10-bit and 12-bit, high
speed, low power, successive approximation ADCs. The parts
operate from a single 2.35 V to 5.25 V power supply and feature
throughput rates up to 250 kSPS. The parts contain a low noise,
wide bandwidth track-and-hold amplifier that can handle input
frequencies in excess of 13 MHz.
The conversion process and data acquisition are controlled
using CS and the serial clock, allowing the devices to interface
with microprocessors or DSPs. The input signal is sampled on
the falling edge of CS and the conversion is initiated at this
point. There are no pipeline delays associated with the part.
The AD7910/AD7920 use advanced design techniques to
achieve very low power dissipation at high throughput rates.
The reference for the part is taken internally from VDD. This
allows the widest dynamic input range to the ADC. Thus, the
analog input range for the part is 0 to VDD. The conversion rate
is determined by the SCLK.
PRODUCT HIGHLIGHTS
1.
10-/12-bit ADCs in SC70 and MSOP packages.
2.
Low power consumption.
3.
Flexible power/serial clock speed management. The
conversion rate is determined by the serial clock, allowing
the conversion time to be reduced through the serial clock
speed increase. This allows the average power consumption
to be reduced when power-down mode is used while not
converting. The part also features a power-down mode to
maximize power efficiency at lower throughput rates.
Current consumption is 1 μA maximum and 50 nA typically
when in power-down mode.
4.
Reference derived from the power supply.
5.
No pipeline delay. The parts feature a standard successive
approximation ADC with accurate control of the sampling
instant via a CS input and once-off conversion control.
1 Protected by U.S. Patent No. 6,681,332.
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| AD7920BRMZ-REEL | 功能描述:IC ADC 12BIT SRL 250KSPS 8MSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:2,500 系列:- 位数:16 采样率（每秒）:15 数据接口:MICROWIRE?，串行，SPI? 转换器数目:1 功率耗散（最大）:480µW 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:38-WFQFN 裸露焊盘 供应商设备封装:38-QFN（5x7） 包装:带卷 (TR) 输入数目和类型:16 个单端，双极；8 个差分，双极 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494 |
| AD7920BRMZ-REEL7 | 功能描述:IC ADC 12BIT SRL 250KSPS 8MSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:2,500 系列:- 位数:16 采样率（每秒）:15 数据接口:MICROWIRE?，串行，SPI? 转换器数目:1 功率耗散（最大）:480µW 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:38-WFQFN 裸露焊盘 供应商设备封装:38-QFN（5x7） 包装:带卷 (TR) 输入数目和类型:16 个单端，双极；8 个差分，双极 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494 |
| AD7921 | 制造商:AD 制造商全称:Analog Devices 功能描述:2-Channel, 2.35 V to 5.25 V 250 kSPS, 10-/12-Bit ADCs |
| AD7921ARM | 制造商:Analog Devices 功能描述:ADC Single SAR 250ksps 12-bit Serial 8-Pin MSOP 制造商:Rochester Electronics LLC 功能描述:DUAL 12-BIT , 250KSPS ADC I.C. - Bulk 制造商:Analog Devices 功能描述:12BIT ADC DUAL SMD 7921 MSOP8 |
| AD7921ARM-REEL | 制造商:Analog Devices 功能描述:ADC Single SAR 250ksps 12-bit Serial 8-Pin MSOP T/R 制造商:Analog Devices 功能描述:ADC SGL SAR 250KSPS 12-BIT SERL 8MSOP - Tape and Reel 制造商:Rochester Electronics LLC 功能描述:DUAL 12-BIT , 250KSPS ADC I.C. - Tape and Reel |
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