2.5 V to 5.5 V, 500 μA, 2-Wire Interface
Quad Voltage Output, 8-/10-/12-Bit DACs
AD5305/AD5315/AD5325
GENERAꢀ DESCRIPTION
FEATURES
AD5305: 4 buffered 8-bit DACs in 10-lead MSOP
A version: 1 ꢀSB INꢀ, B version: 0.625 ꢀSB INꢀ
AD5315: 4 buffered 10-bit DACs in 10-lead MSOP
A version: 4 ꢀSB INꢀ, B version: 2.5 ꢀSB INꢀ
AD5325: 4 buffered 12-bit DACs in 10-lead MSOP
A version: 16 ꢀSB INꢀ, B version: 10 ꢀSB INꢀ
ꢀow power operation: 500 μA @ 3 V, 600 μA @ 5 V
2-wire (I2C®-compatible) serial interface
2.5 V to 5.5 V power supply
The AD5305/AD5315/AD53251 are quad 8-, 10-, and 12-bit
buffered voltage output DACs in a 10-lead MSOP that operate
from a single 2.5 V to 5.5 V supply, consuming 500 μA at 3 V.
Their on-chip output amplifiers allow rail-to-rail output swing
with a slew rate of 0.7 V/μs. A 2-wire serial interface that
operates at clock rates up to 400 kHz is used. This interface is
SMBus compatible at VDD < 3.6 V. Multiple devices can be
placed on the same bus.
The references for the four DACs are derived from one
reference pin. The outputs of all DACs can be updated
simultaneously using the software LDAC function.
Guaranteed monotonic by design over all codes
Power-down to 80 nA @ 3 V, 200 nA @ 5 V
Three power-down modes
Double-buffered input logic
Output range: 0 V to VREF
Power-on reset to 0 V
Simultaneous update of outputs (ꢀDAC function)
Software clear facility
Data readback facility
On-chip rail-to-rail output buffer amplifiers
Temperature range: −40°C to +105°C
The parts incorporate a power-on reset circuit, which ensures
that the DAC outputs power up to 0 V and remain there until a
valid write takes place to the device. There is also a software
clear function to reset all input and DAC registers to 0 V. The
parts contain a power-down feature that reduces the current
consumption of the devices to 200 nA @ 5 V (80 nA @ 3 V).
The low power consumption of these parts in normal operation
makes them ideally suited for portable battery-operated equip-
ment. The power consumption is 3 mW at 5 V, 1.5 mW at 3 V,
reducing to 1 ꢀW in power-down mode.
APPꢀICATIONS
Portable battery-powered instruments
Digital gain and offset adjustment
Programmable voltage and current sources
Programmable attenuators
1 Protected by U.S. Patent No. 5,969,657 and 5,684,481.
Industrial process control
FUNCTIONAꢀ BꢀOCK DIAGRAM
V
DD
REF IN
LDAC
DAC
REGISTER
INPUT
REGISTER
STRING
DAC A
V
V
A
B
BUFFER
BUFFER
OUT
OUT
DAC
REGISTER
INPUT
REGISTER
SCL
SDA
STRING
DAC B
INTERFACE
LOGIC
DAC
REGISTER
INPUT
REGISTER
STRING
DAC C
V
V
C
D
BUFFER
BUFFER
OUT
OUT
A0
DAC
REGISTER
INPUT
REGISTER
STRING
DAC D
POWER-DOWN
LOGIC
POWER-ON
RESET
AD5305/AD5315/AD5325
GND
Figure 1.
Rev. G
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 ofthird parties that may result fromits 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 registeredtrademarks arethe property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
www.analog.com
©2006 Analog Devices, Inc. All rights reserved.
5秒后页面跳转
MAX487芯片引脚图及功能、应用领域详解
IR2110驱动芯片引脚图及功能、电路图详解
74LS74是什么芯片 74LS74引脚图及功能表
CD4511芯片引脚图及功能、电路图解析
微信公众号
抖音公众号
浙公网安备 33010502006866号 浙ICP备10014259号-119
营业执照ICP证
数据手册
如果您发现信息不准确，
