LTC2609/LTC2619/LTC2629
Quad 16-/14-/12-Bit
Rail-to-Rail DACs with
2
I C Interface
FEATURES
DESCRIPTION
TheLTC®2609/LTC2619/LTC2629arequad16-,14-and12-
bit,2.7Vto5.5Vrail-to-railvoltageoutputDACsina16-lead
SSOPpackage.Theyhavebuilt-inhighperformanceoutput
buffers and are guaranteed monotonic.
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Smallest Pin-Compatible Quad DACs:
LTC2609: 16 Bits
LTC2619: 14 Bits
LTC2629: 12 Bits
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Guaranteed Monotonic Over Temperature
These parts establish new board-density benchmarks for
16- and 14-bit DACs and advance performance standards
for output drive and load regulation in single-supply, volt-
age-output DACs.
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Separate Reference Inputs
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27 Selectable Addresses
2
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™
400kHz I C Interface
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Wide 2.7V to 5.5V Supply Range
2
Thepartsusea2-wire, I Ccompatibleserialinterface. The
Low Power Operation: 250μA per DAC at 3V
Individual Channel Power Down to 1μA (Max)
High Rail-to-Rail Output Drive ( 15mA, Min)
Ultralow Crosstalk Between DACs (5μV)
LTC2609/LTC2619/LTC2629: Power-On Reset to
Zero-Scale
LTC2609/LTC2619/LTC2629 operate in both the standard
mode (clock rate of 100kHz) and the fast mode (clock
rate of 400kHz).
The LTC2609/LTC2619/LTC2629 incorporate a power-on
resetcircuit.Duringpower-up,thevoltageoutputsriseless
than 10mV above zero-scale; after power-up, they stay at
zero-scale until a valid write and update take place. The
power-on reset circuit resets the LTC2609-1/LTC2619-1/
LTC2629-1 to mid-scale. The voltage outputs stay at mid-
scale until a valid write and update take place.
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LTC2609-1/LTC2619-1/LTC2629-1: Power-On Reset
to Mid-Scale
Tiny 16-Lead Narrow SSOP Package
APPLICATIONS
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L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
Protected by U.S. Patents including 5396245. Patent pending.
Mobile Communications
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Process Control and Industrial Automation
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Automatic Test Equipment and Instrumentation
BLOCK DIAGRAM
V
REFLO
GND
1
CC
2
16
REFA
3
4
15 REFD
Differential Nonlinearity
DAC A
DAC B
DAC D
DAC C
V
14
V
OUTD
OUTA
(LTC2609)
1.0
0.8
V
V
= 5V
REF
CC
= 4.096V
V
OUTB
5
6
13
V
OUTC
0.6
0.4
REFB
12 REFC
0.2
CONTROL
LOGIC
0
–0.2
–0.4
–0.6
–0.8
–1.0
32-BIT SHIFT REGISTER
11 CA0
10 CA1
8
9
SCL
SDA
ADDRESS
DECODE
LOGIC
2
I C
0
16384
32768
CODE
49152
65535
INTERFACE
2609 G02
7
CA2
2609 BD
26091929fa
1