LTC2601 Datasheet, PDF (1/16 Pages) Linear Technology – 16-/14-/12-Bit Rail-to-Rail DACs in 10-Lead DFN

FEATURES
s _{Smallest Pin-Compatible Single DACs:}
LTC2601: 16 Bits
LTC2611: 14 Bits
LTC2621: 12 Bits
s _{Guaranteed Monotonic Over Temperature}
s _{Wide 2.5V to 5.5V Supply Range}
s _{Low Power Operation: 300µA at 3V}
s _{Power Down to 1µA, Max}
s _{High Rail-to-Rail Output Drive (±15mA, Min)}
s _{Double-Buffered Data Latches}
s _{Asynchronous DAC Update Pin}
s _{Tiny (3mm × 3mm) 10-Lead DFN Package}
U
APPLICATIO S
s _{Mobile Communications}
s _{Process Control and Industrial Automation}
s _{Instrumentation}
s _{Automatic Test Equipment}
LTC2601/LTC2611/LTC2621
16-/14-/12-Bit Rail-to-Rail
DACs in 10-Lead DFN
DESCRIPTIO
The LTC^®2601/LTC2611/LTC2621 are single 16-, 14-
and 12-bit, 2.5V-to-5.5V rail-to-rail voltage output DACs
in a 10-lead DFN package. They have built-in high perfor-
mance 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, 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, hardware CLR and
asynchronous DAC update (LDAC) pins are included.
The LTC2601/LTC2611/LTC2621 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 Corporation.
U.S. patent number 5396245.
BLOCK DIAGRA
SDI
2
SCK
3
CS/LD
5
SDO
1
6
REF
32-BIT
SHIFT
REGISTER
INPUT
REGISTER
DAC
REGISTER
CONTROL
DECODE
LOGIC
LDAC
CLR
10
4
9
V_CC
12-/14-/16-BIT DAC
V_OUT
7
GND
8
2601 BD
Differential Nonlinearity (LTC2601)
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
2600 G02
2601f
1