Quad, 12-/14-/16-Bit nanoDACs® with
5ppm/°C On-chip Ref, I2C Interface
AD5625R/AD5645R/AD5665R
AD5625/AD5665
Preliminary Technical Data
V
/V
REFIN REFOUT
V
GND
DD
FEATURES
AD5625R/AD5645R/AD5665R
1.25V/2.5V REF
Low power, smallest pin-compatible, quad nanoDACs
AD5625R/AD5645R/AD5665R
12-/14-/16 bits
On-chip 1.25 V/2.5 V, 5 ppm/°C reference.
AD5625/AD5665
INPUT
REGISTER
DAC
REGISTER
STRING
DAC A
V
BUFFER
BUFFER
BUFFER
BUFFER
OUTA
ADDR1
INPUT
REGISTER
DAC
REGISTER
STRING
DAC B
V
V
V
ADDR2
SCL
OUTB
OUTC
OUTD
INTERFACE
LOGIC
INPUT
REGISTER
DAC
REGISTER
STRING
DAC C
12-/16 bits
External reference only
SDA
DAC
REGISTER
INPUT
REGISTER
STRING
DAC D
3 mm x 3 mm LFCSP and 14-lead TSSOP
2.7 V to 5.5 V power supply
Guaranteed monotonic by design
Power-on reset to zero scale/midscale
Per channel power-down
POWER-ON
RESET
POWER-DOWN
LOGIC
LDAC CLR
NOTE. THE FOLLOWING PINS ARE AVAILABLE ONLY ON 14-PIN PACKAGE - ADDR2, LDAC, CLR, POR.
POR
V
V
GND
REFIN
DD
AD5625/AD5665
I2C-compatible serial interface supports standard (100 kHz),
fast (400 kHz), and high speed (3.4 MHz) modes
INPUT
REGISTER
DAC
REGISTER
STRING
DAC A
BUFFER
BUFFER
BUFFER
BUFFER
V
OUTA
ADDR1
STRING
DAC B
INPUT
REGISTER
DAC
REGISTER
V
V
V
ADDR2
SCL
OUTB
OUTC
OUTD
APPLICATIONS
Process control
Data acquisition systems
Portable battery-powered instruments
Digital gain and offset adjustment
Programmable voltage and current sources
Programmable attenuators
INTERFACE
LOGIC
INPUT
REGISTER
DAC
REGISTER
STRING
DAC C
SDA
DAC
REGISTER
INPUT
REGISTER
STRING
DAC D
POWER-ON
RESET
POWER-DOWN
LOGIC
LDAC CLR
POR
NOTE. THE FOLLOWING PINS ARE AVAILABLE ONLY ON 14-PIN PACKAGE - ADDR2, LDAC, CLR, POR.
Figure 1. Functional Block Diagrams
GENERAL DESCRIPTION
until a valid write takes place. The part contains a per-channel
power-down feature that reduces the current consumption of
the device to 480 nA at 5 V and provides software-selectable
output loads while in power-down mode. The low power
consumption of this part in normal operation makes it ideally
suited to portable battery-operated equipment. The on-chip
precision output amplifier enables rail-to-rail output swing.
The AD5625R/AD5645R/AD5665R, AD5625/AD5665
members of the nanoDAC family, are low power, quad, 12-, 14-,
16-bit buffered voltage-out DACs with/without an on-chip
reference. All devices operate from a single 2.7 V to 5.5 V
supply, are guaranteed monotonic by design and have an I2C-
compatible serial interface .
The AD5625R/AD5645R/AD5665R have an on-chip reference. The
AD56x5RBCPZ have a 1.25 V, 5 ppm/°C reference, giving a full-scale
output range of 2.5 V; the AD56x5RBRUZ have a 2.5 V, 5 ppm/°C
reference giving a full-scale output range of 5 V. The on-chip
reference is off at power-up, allowing the use of an external reference.
The internal reference is enabled via a software write. The AD5665
and AD5625 require an external reference voltage to set the
output range of the DAC.
The AD5625R/AD5645R/AD5665R, AD5625/AD5665 use a 2-
wire I2C-compatible serial interface that operates in standard
(100 kHz), fast (400 kHz), and high speed (3.4 MHz) modes.
Table 1. Related Devices
Part No.
AD5624R/AD5644R/AD5664R Quad SPI 12-, 14-, 16-bit DACs,
AD5624/AD5664 with/without internal reference.
AD5627R/AD5647R/AD5667R Dual I2C 12-, 14-,16-bit DACs,
Description
AD5627/5667,
AD5666
with/without internal reference.
2.7 V to 5.5 V, Quad 16-bit DAC,
internal reference, SPI interface
The part incorporates a power-on reset circuit that ensures the
DAC output powers up to 0 V or midscale and remains there
Rev. PrA
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 that may result from its 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
摩尔斯微电子在美国约书亚树国家公园测试 Wi-Fi HaLow
贸泽上架Tallysman TW5386智能GNSS天线
SL74HC10N：高性能三输入与非门解析
AIC1781A 电池充电控制器深度解析
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，
