LTC2605/LTC2615/LTC2625
Octal 16-/14-/12-Bit
Rail-to-Rail DACs in 16-Lead SSOP
DESCRIPTIO
The LTC
廬
2605/LTC2615/LTC2625 are octal 16-, 14-
and 12-bit, 2.7V to 5.5V rail-to-rail voltage-output DACs in
16-lead narrow SSOP packages. They have built-in
high performance 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, crosstalk and load regulation
in single-supply, voltage-output multiples.
The parts use the 2-wire I
2
C compatible serial interface.
The LTC2605/LTC2615/LTC2625 operate in both the
standard mode (maximum clock rate of 100kHz) and the
fast mode (maximum clock rate of 400kHz).
The LTC2605/LTC2615/LTC2625 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.
The power-on reset circuit resets the LTC2605-1/
LTC2615-1/LTC2625-1 to midscale. The voltage output
stays at midscale until a valid write and update
takes place.
, LTC and LT are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
FEATURES
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Smallest Pin-Compatible Octal DACs:
LTC2605: 16 Bits
LTC2615: 14 Bits
LTC2625: 12 Bits
Guaranteed Monotonic Over Temperature
400kHz I
2
C Interface
Wide 2.7V to 5.5V Supply Range
Low Power Operation: 250碌A(chǔ) per DAC at 3V
Individual Channel Power-Down to 1碌A(chǔ), Max
Ultralow Crosstalk Between DACs (<10碌V)
High Rail-to-Rail Output Drive (鹵15mA, Min)
Double-Buffered Digital Inputs
27 Selectable Addresses
LTC2605/LTC2615/LTC2625: Power-On Reset to
Zero Scale
LTC2605-1/LTC2615-1/LTC2625-1: Power-On Reset
to Midscale
Tiny 16-Lead Narrow SSOP Package
APPLICATIO S
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Mobile Communications
Process Control and Industrial Automation
Instrumentation
Automatic Test Equipment
BLOCK DIAGRA
GND
1
V
OUT A
2
DAC A
16 V
CC
REGISTER
REGISTER
REGISTER
REGISTER
DAC H
15 V
OUT H
REGISTER
REGISTER
REGISTER
REGISTER
V
OUT B
3
DAC B
DAC G
14 V
OUT G
REGISTER
REGISTER
REGISTER
REGISTER
DNL (LSB)
V
OUT C
4
DAC C
DAC F
13 V
OUT F
REGISTER
REGISTER
REGISTER
REGISTER
V
OUT D
5
DAC D
DAC E
12 V
OUT E
REF
6
32-BIT SHIFT REGISTER
11
CA0
CA2
7
10
CA1
2-WIRE INTERFACE
SCL
8
9
2605/15/25 BD
SDA
U
W
U
Differential Nonlinearity (LTC2605)
1.0
0.8
0.6
0.4
0.2
0
鈥?.2
鈥?.4
鈥?.6
鈥?.8
鈥?.0
0
16384
32768
CODE
49152
65535
2605 G02
V
CC
= 5V
V
REF
= 4.096V
2605f
1
LTC2605CGN相關(guān)型號PDF文件下載
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