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參數(shù)資料
| 型號： | AD5300 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Rail-to-Rail Voltage Output 8-Bit DAC(滿幅度電壓輸出8位D/A轉(zhuǎn)換器) |
| 中文描述： | 軌至軌電壓輸出的8位DAC（滿幅度電壓輸出8位的D / A轉(zhuǎn)換器） |
| 文件頁數(shù)： | 1/12頁 |
| 文件大小： | 221K |
| 代理商： | AD5300 |
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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
AD5300*
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., 1997
+2.7 V to +5.5 V 140
m
A Rail-to-Rail
Voltage Output 8-Bit DAC
FUNCT IONAL BLOCK DIAGRAM
DAC
REGISTER
8-BIT
DAC
INPUT
CONTROL
LOGIC
POWER-DOWN
CONTROL LOGIC
OUTPUT
BUFFER
POWER-ON
RESET
AD5300
V
DD
GND
REF (+) REF (–)
RESISTOR
NETWORK
V
OUT
SYNC
SCLK
DIN
FEATURES
Single 8-Bit DAC
6-Lead SOT-23 and 8-Lead microSOIC Packages
Micropower Operation: 140
m
A @ 5 V
Power-Down to 200 nA @ 5 V, 50 nA @ 3 V
+2.7 V to +5.5 V Power Supply
Guaranteed Monotonic by Design
Reference Derived from Power Supply
Power-On-Reset to Zero Volts
Three Power-Down Functions
Low Power Serial Interface with Schmitt-Triggered
Inputs
On-Chip Output Buffer Amplifier, Rail-to-Rail
Operation
SYNC
Interrupt Facility
APPLICATIONS
Portable Battery Powered Instruments
Digital Gain and Offset Adjustment
Programmable Voltage and Current Sources
Programmable Attenuators
GE NE RAL DE SCRIPT ION
T he AD5300 is a single, 8-bit voltage out DAC that operates
from a single +2.7 V to +5.5 V supply. Its on-chip precision
output amplifier allows rail-to-rail output swing to be achieved.
T he AD5300 utilizes a versatile three-wire serial interface that
operates at clock rates up to 30 MHz and is compatible with
standard SPI , QSPI , MICROWIRE and DSP interface
standards.
T he reference for AD5300 is derived from the power supply
inputs and thus gives the widest dynamic output range. T he part
incorporates a power-on-reset circuit that ensures that the DAC
output powers up to zero volts and remains there until a valid
write takes place to the device. T he part contains a power-down
feature that reduces the current consumption of the device to
typically 200 nA at 5 V and provides software selectable output
loads while in power-down mode. T he part is put into power-
down mode over the serial interface.
T he low power consumption of this part in normal operation
makes it ideally suited to portable battery operated equipment.
T he power consumption is 0.7 mW at 5 V reducing to 1
μ
W in
power-down mode.
T he AD5300 is available in a 6-lead SOT -23 package and an
8-lead microSOIC package.
PRODUCT HIGHLIGHT S
1. Low power, single supply operation. T his part operates from
a single +2.7 V to +5.5 V supply and typically consumes
0.35 mW at 3 V and 0.7 mW at 5 V, making it ideal for
battery powered applications.
2. T he on-chip output buffer amplifier allows the output of the
DAC to swing rail-to-rail with a slew rate of 1 V/
μ
s.
3. Reference derived from the power supply.
4. High speed serial interface with clock speeds up to 30 MHz.
5. Power-down capability. When powered down the DAC
typically consumes 50 nA at 3 V and 200 nA at 5 V.
SPI and QSPI are trademarks of Motorola.
MICROWIRE is a trademark of National Semiconductor.
*
Patent pending; protected by U.S. Patent No. 5684481.
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