LTC2600/LTC2610/LTC2620
Octal 16-/14-/12-Bit
Rail-to-Rail DACs in 16-Lead SSOP
FEATURES
DESCRIPTION
The LTC®2600/LTC2610/LTC2620 are octal 16-, 14- and
12-bit, 2.5V-to-5.5V rail-to-rail voltage-output DACs in
16-lead narrow SSOP and 20-lead 4mm × 5mm QFN
packages. They have built-in high performance output
buffers and are guaranteed monotonic.
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Smallest Pin-Compatible Octal DACs:
LTC2600: 16 Bits
LTC2610: 14 Bits
LTC2620: 12 Bits
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Guaranteed 16-Bit Monotonic Over Temperature
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Wide 2.5V to 5.5V Supply Range
These parts establish new board-density benchmarks for
16-and14-bitDACsandadvanceperformancestandardsfor
outputdrive,crosstalkandloadregulationinsingle-supply,
voltage-output multiples.
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Low Power Operation: 250μA per DAC at 3V
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Individual Channel Power-Down to 1μA, Max
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Ultralow Crosstalk Between DACs (<10μV)
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High Rail-to-Rail Output Drive (±15mA, Min)
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ThepartsuseasimpleSPI/MICROWIREcompatible3-wire
Double-Buffered Digital Inputs
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serial interface which can be operated at clock rates up
to 50MHz. Daisychain capability and a hardware CLR
function are included.
Pin-Compatible 10-/8-Bit Versions (LTC1660/LTC1665)
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Tiny 16-Lead Narrow SSOP
and 20-Lead 4mm × 5mm QFN Packages
The LTC2600/LTC2610/LTC2620 incorporate a power-on
resetcircuit.Duringpower-up,thevoltageoutputsriseless
than10mVabovezero-scale;andafterpower-up,theystay
at zero-scale until a valid write and update take place.
APPLICATIONS
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Mobile Communications
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Process Control and Industrial Automation
Instrumentation
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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.
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Automatic Test Equipment
BLOCK DIAGRAM
(20)
GND
1
16
15
V
V
(17)
(16)
CC
DAC A
DAC H
(1)
V
2
OUTA
OUTH
Differential Nonlinearity (LTC2600)
1.0
DAC B
DAC C
DAC G
DAC F
V
V
V
V
(2)
3
4
14
13
(15)
OUTB
OUTC
OUTG
OUTF
V
V
= 5V
REF
CC
0.8
0.6
= 4.096V
0.4
(3)
(4)
(14)
(13)
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
DAC D
DAC E
V
V
5
12
OUTD
REF
OUTE
CLR
SDO
(5)
(7)
(8)
6
7
8
11
10
9
(11)
(10)
(9)
POWER-ON
RESET
0
16384
32768
CODE
49152
65535
CONTROL
LOGIC
DECODE
2600 G21
CS/LD
SCK
32-BIT SHIFT REGISTER
SDI
2600 BD
NOTE: NUMBERS IN PARENTHESIS REFER TO THE UFD PACKAGE
2600fe
1