LTC2604/LTC2614/LTC2624
Quad 16-Bit Rail-to-Rail DACs
in 16-Lead SSOP
FEATURES
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DESCRIPTIO
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Smallest Pin Compatible Quad 16-Bit DAC:
LTC2604: 16-Bits
LTC2614: 14-Bits
LTC2624: 12-Bits
Guaranteed 16-Bit Monotonic Over Temperature
Separate Reference Inputs for each DAC
Wide 2.5V to 5.5V Supply Range
Low Power Operation: 250碌A(chǔ) per DAC at 3V
Individual DAC Power-Down to 1碌A(chǔ), Max
Ultralow Crosstalk Between DACs (<5碌V)
High Rail-to-Rail Output Drive (鹵15mA)
Double Buffered Digital Inputs
16-Lead Narrow SSOP Package
The LTC
廬
2604/LTC2614/LTC2624 are quad 16-,14- and
12-bit 2.5V to 5.5V rail-to-rail voltage output DACs in
16-lead narrow SSOP packages. These parts have sepa-
rate reference inputs for each DAC. They have built-in
high performance output buffers and are guaranteed
monotonic.
These parts establish advanced performance standards
for output drive, crosstalk and load regulation in single-
supply, voltage output multiples.
The parts use a simple SPI/MICROWIRE
TM
compatible
3-wire serial interface which can be operated at clock
rates up to 50MHz. Daisy-chain capability and a hardware
CLR function are included.
The LTC2604/LTC2614/LTC2624 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.
, LTC and LT are registered trademarks of Linear Technology Corporation.
MICROWIRE is a trademark of National Semiconductor Corp.
APPLICATIO S
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Mobile Communications
Process Control and Industrial Automation
Instrumentation
Automatic Test Equipment
BLOCK DIAGRA
GND
1
REF LO
2
REF A
3
DAC
REGISTER
V
CC
16
REF D
15
INPUT
REGISTER
DAC
REGISTER
V
OUT D
DAC D
14
4
DAC A
INPUT
REGISTER
V
OUTA
INPUT
REGISTER
DAC
REGISTER
V
OUT C
13
REF C
12
CLR
11
ERROR (LSB)
DAC C
DAC
REGISTER
V
OUTB
5
REF B
6
CS/LD
7
SCK
8
DAC B
INPUT
REGISTER
CONTROL
LOGIC
DECODE
SDO
10
SDI
9
2604 BD
32-BIT SHIFT REGISTER
U
Differential Nonlinearity (LTC2604)
1.0
0.8
0.6
0.4
0.2
0
鈥?.2
鈥?.4
鈥?.6
鈥?.8
鈥?.0
0
16384
32768
CODE
49152
65535
2604 TA01
W
U
V
CC
= 5V
V
REF
= 4.096V
2604f
1