ANALOG DEVICES AD5628 AD5668 Package Note 数据手册

更新时间:2023-05-13 14:37:46 阅读: 评论:0

Octal, 12-/16-Bit DAC, SPI, 5 ppm/°C On-
Rev  PrA
Information furnished by Analog Devices is believed to be accurate and reliable. However , no responsibility is assumed by Analog Devices for its u, nor for any infringements of patents or other rights of third parties that may result from its u. Specifications subject to change without notice. No licen is granted by implication or otherwi under any patent or patent rights of Analog Devices. T rademarks and registered trademarks are the 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 © 2010 Analog Devices, Inc. All rights rerved.
FEATURES
鉴真和尚Low power, pin-compatible octal DACs AD5668: 16 bits AD5628: 12 bits
AD5668/AD5628 in 16-lead LFCSP
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 ret to zero scale or midscale 3 power-down functions
Hardware LDAC  and LDAC  override function  CLR APPLICATIONS
function to programmable code Rail-to-rail operation
Optical transceivers Power Amp control
Data acquisition systems
Digital gain and offt adjustment FUNCTIONAL BLOCK DIAGRAM
标准化学校
O UT H
O UT A
O UT B
O UT C
O UT D
O UT E
O UT F
O UT G
0000
补肾气的中药酒店发票Figure 1.
GENERAL DESCRIPTION
The AD5628/AD5668 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 AD5628/AD5668 have an on-chip reference with an
internal gain of 2. The AD5628/AD5648/AD5668-1 have a 1.25 V 5 ppm/°C reference, giving a full-scale output range of 2.5 V; the AD5628/AD5668-2, -3 have a 2.5 V 5 ppm/°C reference,
giving a full-scale output range of 5 V . T he on-board reference is off at power-up, allowing the u o
方叶f an external reference. The internal reference is enabled via a software write.
The part incorporates a power-on ret circuit that ensures that the DAC output powers up to 0 V (AD5628/AD5668-1, -2) or
midscale (AD5668-3) 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-lectable output loads while in power-down mode for any or all DAC channels.
The outputs of all DACs can be updated simultaneously  using the LDAC  function, with the added functionality of ur-lectable DAC channels to simultaneously update. There is also an asynchronous PRODUCT HIGHLIGHTS
CLR  that updates all DACs to a ur-programmable code—zero scale, midscale, or full scale. The AD5628/AD5668 utilize a versatile 3-wire rial interface that operates at clock rates of up to 50 MHz and is compatible with standard SPI®, QSPI™, MICROWIRE™, and DSP interface standards. The on-chip precision output amplifier enables rail-to-rail output swing.
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 .
4. Power-on ret 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 .
Rev. PrA | Page 2 of 4
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
00000000
1211101
34
V D V F
V H 9
C L R
L D A C
V 2
S Y N C
V A 6
V E 5
傣族的节日
V C 7
V G 8
V /V 16S C L K
15D I N
致教师14GND 13V B TO P VIEW
DD
OUT OUT OUT O U T R E F I N O U T OUT OUT R E F O U T OUT A D 5668A D 5628
Figure 2. 16-Lead LFCSP (CP-16-17)
Table 1. Pin Function Descriptions
Rev. PrA | Page 3 of 4
OUTLINE DIMENSION
COMPLIANT TO JEDEC STANDARDS MO-220-WGGC.
012909-B
0.400.35
0.800.750.08
Figure 2. 16-Lead Frame Chip Scale Package [LFCSP]
古代女尸(CP-16-17)
Dimensions shown in millimeters
©2010 Analog Devices, Inc. All rights rerved. Trademarks and  registered trademarks are the property of their respective owners.
Rev. PrA | Page 4 of 4

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