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AD5621BKS Datasheet

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  • 2.7 V to 5.5 V, <100 UA, 8-/10-/12-Bit nanoDAC D/A, SPI Inte...

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2.7 V to 5.5 V, <100 碌A, 8-/10-/12-Bit
nanoDAC鈩?/div>
D/A, SPI
廬
Interface, SC70 Package
Preliminary Technical Data
FEATURES
6-lead SC70 package
Power-down to <100 nA @ 3 V
Micropower operation: max 100 碌A @ 5 V
2.7 V to 5.5 V power supply
Guaranteed monotonic by design
Power-on reset to 0 V with brownout detection
3 power-down functions
Low power serial interface with Schmitt-triggered inputs
On-chip output buffer amplifier, rail-to-rail operation
SYNC interrupt facility
Minimized zero code error
AD5601 buffered 8-bit DAC in SC70:
B Version: 鹵0.5 LSB INL
AD5611 buffered 10-bit DAC in SC70:
B Version: 鹵0.5 LSB INL
A Version: 鹵4 LSB INL
AD5621 buffered 12-bit DAC in SC70:
B Version: 鹵1 LSB INL
A Version: 鹵6 LSB INL
AD5601/AD5611/AD5621
FUNCTIONAL BLOCK DIAGRAM
V
DD
GND
POWER-ON
RESET
AD5601/AD5611/AD5621
DAC
REGISTER
REF(+)
14-BIT
DAC
OUTPUT
BUFFER
V
OUT
INPUT
CONTROL
LOGIC
POWER-DOWN
CONTROL LOGIC
RESISTOR
NETWORK
04783-4-001
SYNC
SCLK
DIN
Figure 1.
Table 1. Related Devices
Part Number
AD5641
Description
2.7 V to 5.5 V, <100 碌A, 14-Bit,
nanoDAC
D/A, tiny
SC70 Package
APPLICATIONS
Voltage level setting
Portable battery-powered instruments
Digital gain and offset adjustment
Programmable voltage and current sources
Programmable attenuators
GENERAL DESCRIPTION
The AD5601/AD5611/AD5621, members of the
nanoDAC
family, are single, 8-/10-/12-bit, buffered, voltage out DACs that
operate from a single 2.7 V to 5.5 V supply, consuming <100 碌A
at 5 V. The parts come in a tiny SC70 package. Their on-chip
precision output amplifier allows rail-to-rail output swing to be
achieved. The AD5601/AD5611/AD5621 utilize a versatile
3-wire serial interface that operates at clock rates up to 30 MHz
and is compatible with SPI廬, QSPI鈩? MICROWIRE鈩? and DSP
interface standards.
The reference for the AD5601/AD5611/AD5621 is derived from
the power supply inputs and, therefore, gives the widest
dynamic output range. The parts incorporate a power-on reset
circuit, which ensures that the DAC output powers up to 0 V
and remains there until a valid write to the device takes place.
The AD5601/AD5611/AD5621 contain a power-down feature
that reduces current consumption to <100 nA at 3 V, and
provides software-selectable output loads while in power-down
mode. The parts are put into power-down mode over the serial
interface. The low power consumption of these parts in normal
operation makes them ideally suited to portable battery-
operated equipment. The combination of small package and low
power makes these
nanoDAC
devices ideal for level-setting
requirements such as generating bias or control voltages in
space-constrained and power-sensitive applications.
(continued on Page 3)
Rev. PrC
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
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
www.analog.com
Fax: 781.326.8703
漏 2004 Analog Devices, Inc. All rights reserved.

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