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參數(shù)資料
| 型號： | AD7273BUJ-REEL |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | ADC |
| 英文描述： | 3MSPS,10-/12-Bit ADCs in 8-Lead TSOT |
| 中文描述： | 1-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8 |
| 封裝： | MO-193BA, TSOT-8 |
| 文件頁數(shù)： | 1/20頁 |
| 文件大?。?/td> | 243K |
| 代理商： | AD7273BUJ-REEL |
REV. PrB (
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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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.Trademarks
and registered tradermarks are the property of their respective companies.
One Technology Way, PO. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
Analog Devices, Inc., 200
4
3MSPS,10-/12-Bit
ADCs in 8-Lead TSOT
AD7273/AD7274
Preliminary Technical Data
PRELIMINARY TECHNICAL DATA
FUNCTIONAL BLOCK DIAGRAM
FEATURES
Fast Throughput Rate: 3MSPS
Specified for V
DD
of 2.35 V to 3.6V
Low Power:
13.5 mW max at 3MSPS with 3V Supplies
Wide Input Bandwidth:
70dB SNR at 1MHz Input Frequency
Flexible Power/Serial Clock Speed Management
No Pipeline Delays
High Speed Serial Interface
SPI
TM
/QSPI
TM
/MICROWIRE
TM
/DSP Compatible
Power Down Mode: 1μA max
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
PRODUCT HIGHLIGHTS
1. 3MSPS ADCs in an 8-lead 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
allowing the conversion time to be reduced through the
serial clock speed increase. This allows the average
power consumption to be reduced when a power-down
mode is used while not converting. The AD7273/
AD7274 features a power down mode
to maximize
power efficiency at lower throughput rates. Current con-
sumption is 1
μ
A max when in Power Down mode.
4. Reference can be driven up to the power supply.
5. No Pipeline Delay.
The parts feature a standard successive-approximation
ADC with accurate control of the sampling instant via a
input and once-off conversion control.
GENERAL DESCRIPTION
The AD7273/AD7274 are 10-bit and 12-bit, high speed,
low power, successive-approximation ADCs respectively.
The parts operate from a single 2.35V to 3.6 V power
supply and feature throughput rates up to 3 MSPS. The
parts contain a low-noise, wide bandwidth track/hold am-
plifier which can handle input frequencies in excess of
TBD MHz.
The conversion process and data acquisition are controlled
using
and the serial clock, allowing the devices to
interface with microprocessors or DSPs. The input signal
is sampled on the falling edge of
also initiated at this point. The conversion rate is deter-
mined by the SCLK. There are no pipeline delays associ-
ated with the part.
The AD7273/AD7274 use advanced design techniques to
achieve very low power dissipation at high throughput
rates.
The reference for the parts is applied externally and can
be in the range of 1.2V to V
DD.
This allows the widest
dynamic input range to the ADC.
and the conversion is
T/H
SCLK
SDATA
&6
GND
10-/12-BIT
SUCCESSIVE
APPROXIMATION
ADC
CONTROL
LOGIC
VDD
VIN
AD7273/AD7274
VREF
GND
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