LTC2630
1
2630ff
Block Diagram
Features
applications
Description
Single 12-/10-/8-Bit
Rail-to- Rail DACs with 10ppm/°C
Reference in SC70
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.
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. Op-
tions are available for reset to zero or reset to mid-scale
after power-up.
L, LT, LTC, LTM , Linear Technology and the Linear logo 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, 6937178 and 7414561.
Integral Nonlinearity (LTC2630A-LZ12)
n
Integrated Precision Reference
2.5V Full Scale 10ppm/°C (LTC2630-L)
4.096V Full Scale 10ppm/°C (LTC2630-H)
n
Maximum INL Error: 1 LSB (LTC2630A-12)
n
Low Noise: 0.7mV
P-P
, 0.1Hz to 200kHz
n
Guaranteed Monotonic over Temperature
n
Selectable Internal Reference or Supply as Reference
n
2.7V to 5.5V Supply Range (LTC2630-L)
n
Low Power Operation: 180µA at 3V
n
Power Down to 1.8µA Maximum (C and I Grades)
n
Power-on Reset to Zero or Mid-Scale Options
n
SPI Serial Interface
n
Double-Buffered Data Latches
n
Tiny 6-Lead SC70 Package
n
Mobile Communications
n
Process Control and Industrial Automation
n
Automatic Test Equipment
n
Portable Equipment
n
Automotive
DAC
REGISTER
RESISTOR
DIVIDER
INTERNAL
REFERENCE
INPUT
REGISTER
24-BIT
SHIFT
REGISTER
DAC
V
OUT
CONTROL
DECODE LOGIC
CS/LD
V
CC
GND
DACREF
2630 BD
SCK
SDI
CODE
0
INL (LSB)
0
0.5
4095
2630 TA03
–0.5
–1.0
1024
2048
3072
1.0
V
CC
= 3V
V
FS
= 2.5V
