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參數資料
| 型號： | AD7742BR |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 模擬專用變換器 |
| 英文描述： | Single and Multichannel, Synchronous Voltage-to-Frequency Converters |
| 中文描述： | VOLTAGE-FREQUENCY CONVERTER, 6.144 MHz, PDSO16 |
| 封裝： | SOIC-16 |
| 文件頁數： | 1/12頁 |
| 文件大小： | 131K |
| 代理商： | AD7742BR |
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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.
a
AD7741/AD7742
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., 1999
Single and Multichannel, Synchronous
Voltage-to-Frequency Converters
FUNCTIONAL BLOCK DIAGRAMS
X1
VOLTAGE-TO-
FREQUENCY
MODULATOR
CLOCK
GENERATION
CLKIN
CLKOUT
GND
V
IN
POWER-DOWN
LOGIC
PD
REFIN/OUT
V
DD
f
OUT
AD7741
+2.5V
REFERENCE
X1/X2
INPUT
MUX
VOLTAGE-TO-
FREQUENCY
MODULATOR
REFIN
+2.5V
REFERENCE
REFOUT
CLOCK
GENERATION
CLKIN
CLKOUT
GND
GAIN
V
IN
1
A1
A0
V
IN
2
V
IN
3
V
IN
4
POWER-DOWN
LOGIC
PD
UNI/
BIP
V
DD
f
OUT
AD7742
FEATURES
AD7741: One Single-Ended Input Channel
AD7742: Two Differential or Three Pseudo-Differential
Input Channels
Integral Nonlinearity of 0.012% at f
OUT
(Max) = 2.75 MHz
(AD7742) and at f
OUT
(Max) = 1.35 MHz (AD7741)
Single +5 V Supply Operation
Buffered Inputs
Programmable Gain Analog Front-End
On-Chip +2.5 V Reference
Internal/External Reference Option
Power Down to 35
m
A Max
Minimal External Components Required
8-Lead and 16-Lead DIP and SOIC Packages
APPLICATIONS
Low Cost Analog-to-Digital Conversion
Signal Isolation
GENERAL DESCRIPTION
The AD7741/AD7742 are a new generation of synchronous
voltage-to-frequency converters (VFCs). The AD7741 is a
single-channel version in an 8-lead package (SOIC/DIP) and the
AD7742 is a multichannel version in a 16-lead package (SOIC/
DIP). No user trimming is required to achieve the specified
performance.
The AD7741 has a single buffered input whereas the AD7742
has four buffered inputs that may be configured as two fully-
differential inputs or three pseudo-differential inputs. Both parts
include an on-chip +2.5 V bandgap reference that provides the
user with the option of using this internal reference or an exter-
nal reference.
The AD7741 has a single-ended voltage input range from 0 V
to REFIN. The AD7742 has a differential voltage input range
from –V
REF
to +V
REF
. Both parts operate from a single +5 V
supply consuming typically 6 mA, and also contain a power-
down feature that reduces the current consumption to less than
35
μ
A.
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| AD774BJR | Complete 12-Bit A/D Converters |
| AD774BAR | Complete 12-Bit A/D Converters |
| AD774BBR | Complete 12-Bit A/D Converters |
| AD774BAD | Complete 12-Bit A/D Converters |
| AD774BBD | Complete 12-Bit A/D Converters |
相關代理商/技術參數 |
參數描述 |
|---|---|
| AD7742BR-REEL | 制造商:Analog Devices 功能描述: |
| AD7742YR | 制造商:AD 制造商全稱:Analog Devices 功能描述:Single and Multichannel, Synchronous Voltage-to-Frequency Converters |
| AD7742YR-REEL | 制造商:Analog Devices 功能描述: |
| AD7742YR-REEL7 | 制造商:Analog Devices 功能描述: |
| AD7742YRZ | 制造商:Analog Devices 功能描述:VFC Sync 2.75MHz 16-Pin SOIC N |
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