LTC2630
Single 12-/10-/8-Bit
Rail-to- Rail DACs with 10ppm/°C
Reference in SC70
Description
Features
Integrated Precision Reference
2.5V Full Scale 10ppm/°C (LTC2630-L)
4.096V Full Scale 10ppm/°C (LTC2630-H)
nn Maximum INL Error: 1 LSB (LTC2630A-12)
nn Low Noise: 0.7mV
P-P, 0.1Hz to 200kHz
nn Guaranteed Monotonic over Temperature
nn Selectable Internal Reference or Supply as Reference
nn 2.7V to 5.5V Supply Range (LTC2630-L)
nn Low Power Operation: 180µA at 3V
nn Power Down to 1.8µA Maximum (C and I Grades)
nn Power-on Reset to Zero or Mid-Scale Options
nn SPI Serial Interface
nn Double-Buffered Data Latches
nn Tiny 6-Lead SC70 Package
nn
The LTC®2630 is a family of 12-, 10-, and 8-bit voltageoutput 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.
The LTC2630-L has a full-scale output of 2.5V, and
operates from a single 2.7V to 5.5V supply. The
LTC2630-H has a full-scale output of 4.096V, and operates from a 4.5V to 5.5V supply. Each DAC can also operate in supply as reference mode, which sets the full-scale
output to the supply voltage.
The parts use a simple SPI/MICROWIRE™ compatible
3-wire serial interface which operates at clock rates up
to 50MHz.
The LTC2630 incorporates a power-on reset circuit.
Options are available for reset to zero or reset to midscale after power-up.
Applications
Mobile Communications
Process Control and Industrial Automation
nn Automatic Test Equipment
nn Portable Equipment
nn Automotive
nn
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Analog
Devices, Inc. All other trademarks are the property of their respective owners. Protected by U.S.
Patents, including 5396245, 5859606, 6891433, 6937178 and 7414561.
nn
Block Diagram
Integral Nonlinearity (LTC2630A-LZ12)
VCC
INTERNAL
REFERENCE
1.0
SDI
SCK
0.5
RESISTOR
DIVIDER
INL (LSB)
CONTROL
DECODE LOGIC
24-BIT
SHIFT
REGISTER
DACREF
CS/LD
INPUT
REGISTER
DAC
REGISTER
DAC
VCC = 3V
VFS = 2.5V
0
–0.5
VOUT
–1.0
0
1024
2048
3072
4095
CODE
GND
2630 TA03
2630 BD
2630fg
For more information www.linear.com/LTC2630
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