LTC2630
Single 12-/10-/8-Bit Rail-to-
Rail DACs with Integrated
Reference in SC70
FEATURES
DESCRIPTION
The LTC®2630 is a family of 12-, 10-, and 8-bit voltage-
output DACs with an integrated, high-accuracy, low-drift
reference in a 6-lead SC70 package. It has a rail-to-rail
output buffer and is guaranteed monotonic.
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Integrated Precision Reference
2.5V Full Scale 10ppm/°C (LTC2630-L)
4.096V Full Scale 10ppm/°C (LTC2630-H)
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Maximum INL Error: 1 LSB (LTC2630A-12)
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Low Noise: 0.7mV , 0.1Hz to 200kHz
P-P
The LTC2630-L has a full-scale output of 2.5V, and
operates from a single 2.7V to 5.5V supply. The
LTC2630-Hhasafull-scaleoutputof4.096V, andoperates
from a 4.5V to 5.5V supply. Each DAC can also operate in
supplyasreferencemode, whichsetsthefull-scaleoutput
to the supply voltage.
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Guaranteed Monotonic over Temperature
Selectable Internal Reference or Supply as Reference
2.7V to 5.5V Supply Range (LTC2630-L)
Low Power Operation: 180µA at 3V
Power Down to 1.5µA Maximum (C and I Grades)
Power-on Reset to Zero or Midscale Options
SPI Serial Interface
The parts use a simple SPI/MICROWIRE™ compatible
3-wire serial interface which operates at clock rates up
to 50MHz.
Double-Buffered Data Latches
Tiny 6-Lead SC70 Package
The LTC2630 incorporates a power-on reset circuit. Op-
tions are available for reset to zero or reset to midscale
after power-up.
APPLICATIONS
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Mobile Communications
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Process Control and Industrial Automation
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners. Protected by U.S. Patents
including 5396245, 5859606, 6891433 and 6937178.
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Automatic Test Equipment
Portable Equipment
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Automotive
TYPICAL APPLICATION
V
Integral Nonlinearity (LTC2630A-LZ12)
CC
INTERNAL
REFERENCE
1.0
V
CC
V
FS
= 3V
= 2.5V
SDI
0.5
0
CONTROL
DECODE LOGIC
RESISTOR
DIVIDER
24-BIT
SCK
SHIFT
REGISTER
DACREF
DAC
–0.5
–1.0
CS/LD
V
OUT
INPUT
REGISTER
DAC
REGISTER
2048
3072
0
4095
1024
CODE
GND
2630 TA03
2630 BD
2630f
1