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參數資料
| 型號： | AD7922AUJ-R2 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | ADC |
| 英文描述： | ER 2C 2#16S PIN RECP |
| 中文描述： | 2-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8 |
| 封裝： | MO-193BA, TSOT-8 |
| 文件頁數： | 1/32頁 |
| 文件大小： | 386K |
| 代理商： | AD7922AUJ-R2 |
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2-Channel, 2.35 V to 5.25 V,
1 MSPS, 10-/12-Bit ADCs
AD7912/AD7922
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
www.analog.comFast throughput rate: 1 MSPS
Specified for V
DD
of 2.35 V to 5.25 V
Low power:
4.8 mW typ at 1 MSPS with 3 V supplies
15.5mW typ at 1 MSPS with 5 V supplies
Wide input bandwidth:
71 dB minimum 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 maximum
Daisy-chain mode
8-lead TSOT 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
GENERAL DESCRIPTION
The AD7912/AD7922
1
are 10-bit and 12-bit, high speed, low
power, 2-channel successive approximation ADCs, respectively.
The parts operate from a single 2.35 V to 5.25 V power supply
and feature throughput rates of up to 1 MSPS. The parts contain
a low noise, wide bandwidth track-and-hold amplifier, which
can handle input frequencies in excess of 6 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 conversion rate is
determined by the SCLK signal. The input signal is sampled on
the falling edge of CS and the conversion is also initiated at this
point. The channel to be converted is selected through the DIN
pin, and the mode of operation is controlled by CS. The serial
data stream from the DOUT pin has a channel identifier bit and
mode identifier bit, which provide information about the
converted channel and the current mode of operation.
FUNCTIONAL BLOCK DIAGRAM
0
T/H
CONTROL LOGIC
10-/12-BIT
SUCCESSIVE
APPROXIMATION
ADC
GND
V
DD
AD7912/AD7922
V
IN0
V
IN1
SCLK
DOUT
CS
DIN
MUX
Figure 1.
Several AD7912/AD7922 can be connected together in a daisy
chain. The AD7912/AD7922 feature a daisy-chain mode that
allows the user to read the conversion results from the ADCs
contained in the chain. The AD7912/AD7922 use advanced
design techniques to achieve very low power dissipation at high
throughput rates. The reference for the part is taken internally
from V
DD
, thereby allowing the widest dynamic input range to
the ADC.
PRODUCT HIGHLIGHTS
1.
2-channel, 1 MSPS, 10-/12-bit ADCs in TSOT package.
2.
High throughput with low power consumption.
3.
Flexible power/serial clock speed management.
The conversion rate is determined by the serial clock. The
parts also feature a power-down mode to maximize power
efficiency at lower throughput rates. Average power
consumption is reduced when the power-down mode is
used while not converting. Current consumption is 1 μA
maximum and 50 nA typically when in power-down mode.
4.
Daisy-chain mode.
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 Number 6,681,332.
相關PDF資料 |
PDF描述 |
|---|---|
| AD7912AUJ-R2 | 2-Channel, 2.35 V to 5.25 V, 1 MSPS, 10-/12-Bit ADCs |
| AD7922AUJ-REEL7 | Circular Connector; No. of Contacts:7; Series:; Body Material:Aluminum Alloy; Connecting Termination:Solder; Connector Shell Size:16S; Circular Contact Gender:Socket; Circular Shell Style:Wall Mount Receptacle |
| AD7912AUJ-REEL7 | Circular Connector; No. of Contacts:5; Series:; Body Material:Aluminum Alloy; Connecting Termination:Solder; Connector Shell Size:16S; Circular Contact Gender:Pin; Circular Shell Style:Wall Mount Receptacle; Insert Arrangement:16S-8 RoHS Compliant: No |
| AD7912 | 2-Channel, 2.35 V to 5.25 V, 1 MSPS, 10-/12-Bit ADCs |
| AD7912ARM | 2-Channel, 2.35 V to 5.25 V, 1 MSPS, 10-/12-Bit ADCs |
相關代理商/技術參數 |
參數描述 |
|---|---|
| AD7922AUJ-REEL | 制造商:Analog Devices 功能描述:ADC Single SAR 1Msps 12-bit Serial 8-Pin TSOT T/R |
| AD7922AUJ-REEL7 | 制造商:Analog Devices 功能描述:ADC Single SAR 1Msps 12-bit Serial 8-Pin TSOT T/R 制造商:Rochester Electronics LLC 功能描述:DUAL 12-BIT, 1MSPS, ADC I.C - Tape and Reel |
| AD7922AUJZ-REEL7 | 功能描述:IC ADC DUAL 12BIT 2CH TSOT-23-8 RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 其它有關文件:TSA1204 View All Specifications 標準包裝:1 系列:- 位數:12 采樣率（每秒）:20M 數據接口:并聯 轉換器數目:2 功率耗散（最大）:155mW 電壓電源:模擬和數字 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-TQFP 供應商設備封裝:48-TQFP（7x7） 包裝:Digi-Reel® 輸入數目和類型:4 個單端，單極；2 個差分，單極 產品目錄頁面:1156 (CN2011-ZH PDF) 其它名稱:497-5435-6 |
| AD7923 | 制造商:AD 制造商全稱:Analog Devices 功能描述:4-Channel, 200 kSPS, 12-Bit ADC with Sequencer in 16-Lead TSSOP |
| AD7923_11 | 制造商:AD 制造商全稱:Analog Devices 功能描述:4-Channel, 200 kSPS 12-Bit ADC with Sequencer in 16-Lead TSSOP |
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