Datasheet
LTC2600/LTC2610/LTC2620
1
2600fe
BLOCK DIAGRAM
DESCRIPTION
Octal 16-/14-/12-Bit
Rail-to-Rail DACs in 16-Lead SSOP
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.
These parts establish new board-density benchmarks for
16- and 14-bit DACs and advance performance standards for
output drive, crosstalk and load regulation in single-supply,
voltage-output multiples.
The parts use a simple SPI/MICROWIRE compatible 3-wire
serial interface which can be operated at clock rates up
to 50MHz. Daisychain capability and a hardware CLR
function are included.
The LTC2600/LTC2610/LTC2620 incorporate a power-on
reset circuit. During power-up, the voltage outputs rise less
than 10mV above zero-scale; and after power-up, they stay
at zero-scale until a valid write and update take place.
FEATURES
APPLICATIONS
n
Mobile Communications
n
Process Control and Industrial Automation
n
Instrumentation
n
Automatic Test Equipment
n
Smallest Pin-Compatible Octal DACs:
LTC2600: 16 Bits
LTC2610: 14 Bits
LTC2620: 12 Bits
n
Guaranteed 16-Bit Monotonic Over Temperature
n
Wide 2.5V to 5.5V Supply Range
n
Low Power Operation: 250μA per DAC at 3V
n
Individual Channel Power-Down to 1μA, Max
n
Ultralow Crosstalk Between DACs (<10μV)
n
High Rail-to-Rail Output Drive (±15mA, Min)
n
Double-Buffered Digital Inputs
n
Pin-Compatible 10-/8-Bit Versions (LTC1660/LTC1665)
n
Tiny 16-Lead Narrow SSOP
and 20-Lead 4mm × 5mm QFN Packages
2
15
1GND
V
OUTA
V
OUTB
V
OUTC
V
OUTD
REF
CS/LD
SCK
V
CC
V
OUTH
V
OUTG
V
OUTF
V
OUTE
CLR
SDO
SDI
2600 BD
16
DAC A
3 14
4 13
5
7
6
8
(1)
(20)
(2)
(3)
(4)
(7)
(5)
(8)
(16)
(17)
(15)
(14)
(13)
(10)
(11)
(9)
10
11
9
12
DECODE
POWER-ON
RESET
CONTROL
LOGIC
32-BIT SHIFT REGISTER
REGISTER
REGISTER
DAC H
REGISTER
REGISTER
DAC B
REGISTER
REGISTER
DAC G
REGISTER
REGISTER
DAC C
REGISTER
REGISTER
DAC F
REGISTER
REGISTER
DAC D
REGISTER
REGISTER
DAC E
REGISTER
REGISTER
NOTE: NUMBERS IN PARENTHESIS REFER TO THE UFD PACKAGE
Differential Nonlinearity (LTC2600)
CODE
0 16384 32768 49152 65535
DNL (LSB)
2600 G21
1.0
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
V
CC
= 5V
V
REF
= 4.096V
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Technology Corporation. All other trademarks are the property of their respective owners.