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參數資料
| 型號： | AD7790 |
| 廠商： | Analog Devices, Inc. |
| 元件分類： | ADC |
| 英文描述： | Low Power, 16-Bit Buffered Sigma-Delta ADC |
| 中文描述： | 低功耗，16位緩沖Σ-Δ模數轉換器 |
| 文件頁數： | 1/20頁 |
| 文件大?。?/td> | 299K |
| 代理商： | AD7790 |
Low Power, 16-Bit
Buffered Sigma-Delta ADC
AD7790
FEATURES
Power
Supply: 2.5 V to 5.25 V operation
Normal: 75 μA maximum
Power-down: 1 μA maximum
RMS noise: 1.1 μV at 9.5 Hz update rate
16-bit p-p resolution
Integral nonlinearity: 3.5 ppm typical
Simultaneous 50 Hz and 60 Hz rejection
Internal clock oscillator
Programmable gain amplifier
Rail-to-rail input buffer
V
DD
monitor channel
Temperature range: –40°C to +105°C
10-lead MSOP
INTERFACE
3-wire serial
SPI, QSPI, MICROWIRE, and DSP compatible
Schmitt trigger on SCLK
APPLICATIONS
Smart transmitters
Battery applications
Portable instrumentation
Sensor measurement
Temperature measurement
Pressure measurement
Weigh scales
4 to 20 mA loops
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 companies.
Tel: 781.329.4700Fax: 781.326.8703
www.analog.comFUNCTIONAL BLOCK DIAGRAM
03538-0-001
SERIAL
INTERFACE
INTERNAL
CLOCK
16-BIT
ADC
AIN
GND
REFIN
AD7790
V
DD
DIGITAL
PGA
BUF
V
DD
GND
Figure 1.
GENERAL DESCRIPTION
The AD7790 is a low power, complete analog front end for
low frequency measurement applications. It contains a low
noise 16-bit ∑- ADC with one differential input that can be
buffered or unbuffered along with a digital PGA, which allows
gains of 1, 2, 4, and 8.
The device operates from an internal clock. Therefore, the user
does not have to supply a clock source to the device. The output
data rate from the part is software programmable and can be
varied from 9.5 Hz to 120 Hz, with the rms noise equal to
1.1 μV at the lower update rate. The internal clock frequency
can be divided by a factor of 2, 4, or 8, which leads to a reduc-
tion in the current consumption. The update rate, cutoff
frequency, and settling time will scale with the clock frequency.
The part operates with a power supply from 2.5 V to 5.25 V.
When operating from a 3 V supply, the power dissipation for
the part is 225 μW maximum. It is housed in a 10-lead MSOP.
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PDF描述 |
|---|---|
| AD7790B | Low Power, 16-Bit Buffered Sigma-Delta ADC |
| AD7790BRM | Low Power, 16-Bit Buffered Sigma-Delta ADC |
| AD7790BRM-REEL | Low Power, 16-Bit Buffered Sigma-Delta ADC |
| AD7801BR | +2.7 V to +5.5 V, Parallel Input, Voltage Output 8-Bit DAC |
| AD7801BRU | +2.7 V to +5.5 V, Parallel Input, Voltage Output 8-Bit DAC |
相關代理商/技術參數 |
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| AD779-05A6 | 制造商: 功能描述: 制造商:undefined 功能描述: |
| AD7790B | 制造商:AD 制造商全稱:Analog Devices 功能描述:Low Power, 16-Bit Buffered Sigma-Delta ADC |
| AD7790BRM | 功能描述:IC ADC 16BIT BUFFERED LP 10MSOP RoHS:否 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:1,000 系列:- 位數:16 采樣率（每秒）:45k 數據接口:串行 轉換器數目:2 功率耗散（最大）:315mW 電壓電源:模擬和數字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數目和類型:2 個單端，單極 |
| AD7790BRM-REEL | 制造商:Analog Devices 功能描述:ADC Single Delta-Sigma 120sps 16-bit Serial 10-Pin MSOP T/R 制造商:Analog Devices 功能描述:ADC SGL DELTA-SIGMA 0.12KSPS 16BIT SERL 10MSOP - Tape and Reel |
| AD7790BRMZ | 功能描述:IC ADC 16BIT SIGMA-DELTA 10-MSOP RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:1 系列:microPOWER™ 位數:8 采樣率（每秒）:1M 數據接口:串行，SPI? 轉換器數目:1 功率耗散（最大）:- 電壓電源:模擬和數字 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤 供應商設備封裝:24-VQFN 裸露焊盤（4x4） 包裝:Digi-Reel® 輸入數目和類型:8 個單端，單極 產品目錄頁面:892 (CN2011-ZH PDF) 其它名稱:296-25851-6 |
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