LTC2604 Datasheet, PDF (1/16 Pages) Linear Technology – Quad 16-Bit Rail-to-Rail DACs in 16-Lead SSOP

LTC2604/LTC2614/LTC2624
Quad 16-Bit Rail-to-Rail DACs
in 16-Lead SSOP
FEATURES
s _{Smallest Pin Compatible Quad 16-Bit DAC:}
LTC2604: 16-Bits
LTC2614: 14-Bits
LTC2624: 12-Bits
s _{Guaranteed 16-Bit Monotonic Over Temperature}
s _{Separate Reference Inputs for each DAC}
s _{Wide 2.5V to 5.5V Supply Range}
s _{Low Power Operation: 250µA per DAC at 3V}
s _{Individual DAC Power-Down to 1µA, Max}
s _{Ultralow Crosstalk Between DACs (<5µV)}
s _{High Rail-to-Rail Output Drive (±15mA)}
s _{Double Buffered Digital Inputs}
s _{16-Lead Narrow SSOP Package}
U
APPLICATIO S
s _{Mobile Communications}
s _{Process Control and Industrial Automation}
s _{Instrumentation}
s _{Automatic Test Equipment}
BLOCK DIAGRA
GND
1
REF LO
2
REF A
3
V_OUTA
4
DAC A
V_OUTB
5
REF B
6
CS/LD
7
SCK
8
DAC B
CONTROL
LOGIC
DECODE
32-BIT SHIFT REGISTER
DESCRIPTIO
The LTC^®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.
DAC D
V_CC
16
REF D
15
V_{OUT D}
14
DAC C
V_{OUT C}
13
REF C
12
CLR
11
SDO
10
SDI
9
2604 BD
Differential Nonlinearity (LTC2604)
1.0
V_CC = 5V
0.8 V_REF = 4.096V
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
0
16384
32768
CODE
49152 65535
2604 TA01
2604f
1