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AD5669RBCPZ

更新时间: 2024-11-01 15:44:35
品牌 Logo 应用领域
亚德诺 - ADI 转换器
页数 文件大小 规格书
33页 318K
描述
IC 16-BIT DAC, PQCC16, 4 X 4 MM, ROHS COMPLIANT, MO-220WGGC, LFCSP-16, Digital to Analog Converter

AD5669RBCPZ 数据手册

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Octal, 12-/16-Bit DAC, I2C®, 5ppm/°C On-  
Chip Reference in 4mm X 4mm LFCSP  
AD5629R/AD5669R  
Preliminary Technical Data  
(AD5669R-3) and remains powered up at this level until a valid  
write takes place. The part contains a power-down feature that  
reduces the current consumption of the device to 400 nA at 5 V  
and provides software-selectable output loads while in power-  
down mode for any or all DAC channels.  
FEATURES  
Low power, smallest-pin-compatible octal DACs  
AD5669R: 16 bits  
AD5629R: 12 bits  
4mm X 4mm 16-lead LFCSP and 16-lead TSSOP  
User selectable on-chip 1.25 V/2.5 V, 5 ppm/°C reference  
Power down to 400 nA @ 5 V, 200 nA @ 3 V  
2.7 V to 5.5 V power supply  
Guaranteed monotonic by design  
Power-on reset to zero scale or midscale  
3 power-down functions  
FUNCTIONAL BLOCK DIAGRAM  
V
/V  
V
REFIN REFO UT  
DD  
AD5629R/AD5669R  
LDAC  
1.25V/2.5V  
REF  
BUFFER  
BUFFER  
BUFFER  
BUFFER  
BUFFER  
BUFFER  
BUFFER  
BUFFER  
DAC  
REGISTER  
STRING  
DAC  
INPUT  
REGISTER  
V
V
V
V
V
V
V
V
A
B
C
D
E
F
O UT  
O UT  
O UT  
O UT  
O UT  
O UT  
O UT  
O UT  
A
INPUT  
REGISTER  
DAC  
REGISTER  
STRING  
DAC  
B
Hardware LDAC and CLR functions  
I2C-compatible serial interface supports standard (100 kHz)  
and fast (400 kHz) modes  
INPUT  
DAC  
STRING  
DAC  
SCL  
SDA  
A0  
REGISTER  
REGISTER  
C
INTERFACE  
LOG IC  
DAC  
REGISTER  
STRING  
DAC  
INPUT  
REGISTER  
D
INPUT  
REGISTER  
DAC  
REGISTER  
STRING  
DAC  
E
APPLICATIONS  
Process control  
Data acquisition systems  
Portable battery-powered instruments  
Digital gain and offset adjustment  
Programmable voltage and current sources  
DAC  
REGISTER  
STRING  
DAC  
INPUT  
REGISTER  
F
DAC  
REGISTER  
STRING  
DAC  
INPUT  
REGISTER  
G
H
G
INPUT  
REGISTER  
DAC  
REGISTER  
STRING  
DAC  
H
PO W ER-DOW N  
POW ER-ON  
RESET  
LOGIC  
GND  
LDAC CLR  
Figure 1  
GENERAL DESCRIPTION  
The AD5629R/AD5669R devices are low power, octal, 12-/16-  
bit, buffered voltage-output DACs. All devices operate from a  
single 2.7 V to 5.5 V supply and are guaranteed monotonic by  
design.  
The AD5629R/AD5669R has an on-chip reference with an  
internal gain of 2. The AD5629R/AD5669R has a user selectable  
1.25 V 5 ppm/°C reference, giving a full-scale output range of  
2.5 V or a 2.5 V 5 ppm/°C reference, giving a full-scale output  
range of 5 V depending on the option selected. The on-chip  
reference is off at power-up, allowing the use of an external refer-  
ence. The internal reference is enabled via a software write. The  
AD5669/AD5629 require an external reference voltage to set  
the output range of the DAC.  
PRODUCT HIGHLIGHTS  
1. Octal, 12-/16-bit DAC.  
2. On-chip 1.25 V/2.5 V, 5 ppm/°C reference.  
3. Available in 16-lead LFCSP/16-lead TSSOP.  
4. Power-on reset to 0 V or midscale.  
5. Power-down capability. When powered down, the DAC  
typically consumes 200 nA at 3 V and 400 nA at 5 V.  
The part incorporates a power-on reset circuit that ensures that the  
DAC output powers up to 0 V (AD5629R/AD5669R) or midscale  
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  
© 2010 Analog Devices, Inc. All rights reserved.  

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