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參數(shù)資料
| 型號(hào)： | AD7468 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | 1.8 V, Micro-Power, 8/10/12-Bit ADCs in 6 Lead SOT-23 |
| 中文描述： | 1.8伏，微功耗，8/10/12-Bit在ADC的6引腳SOT - 23 |
| 文件頁(yè)數(shù)： | 1/15頁(yè) |
| 文件大小： | 171K |
| 代理商： | AD7468 |
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AD7466/AD7467/AD7468
a
REV. PrC
07/01
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.
One Technology Way, P.O. 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., 2001
1.8 V, Micro-Power,
8/10/12-Bit ADCs in 6 Lead SOT-23
Preliminary Technical Data
FUNCTIONAL BLOCK DIAGRAM
FEATURES
Specified for VDD of 1.8 V to 3.6 V
Low Power:
0.9 mW max at 60 kSPS with 3.6 V Supplies
0.4 mW max at 100 kSPS with 1.8 V Supplies
Fast Throughput Rate: 100 kSPS
Wide Input Bandwidth:
70dB SNR at 30 kHz Input Frequency
Flexible Power/Serial Clock Speed Management
No Pipeline Delays
High Speed Serial Interface
SPI/QSPI/
Wire/DSP Compatible
Standby Mode: 0.5 A max
6-Lead SOT-23 Package and 8 lead
SOIC
APPLICATIONS
Battery Powered Systems
Medical Instruments
Ramote Data Acquisition
Isolated Data Acquisition
GENERAL DESCRIPTION
The AD7466/AD7467/AD7468 are 12/10/8-bit, high
speed, low power, successive-approximation ADCs re-
spectively. The parts operate from a single 1.8 V to 3.6 V
power supply and feature throughput rates up to 100
kSPS. The parts contain a low-noise, wide bandwidth
track/hold amplifier which can handle input frequencies in
excess of 100 kHz.
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
also initiated at this point. There are no pipelined delays
associated with the part.
The AD7466/AD7467/AD7468 use advanced design tech-
niques 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. Specified for Supply voltages of 1.8 V to 3.6 V
2. 8/10/12-Bit ADCs in a SOT-23 package.
3. High Throughput with Low Power Consumption
4 . 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. Automatic power down after
conversion, which allows the average power cunsumption
to be reduced when in powerdown. Power consumption
is 0.5
A max when in powerdown.
5. Reference derived from the power supply.
6. No Pipeline Delay
The part features a standard successive-approximation
ADC with accurate control of the conversions via a
CS
input.
T/H
VIN
AD7466/67/68
VDD
12/10/8-BIT
SUCCESSIVE
APPROXIMATION
ADC
SCLK
CONTROL LOGIC
SDATA
CS
GND
pecifications
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