LTC2607_15 Datasheet, PDF (1/20 Pages) Linear Technology – 16-/14-/12-Bit Dual Rail-to-Rail DACs with I2C Interface

LTC2607/LTC2617/LTC2627
16-/14-/12-Bit Dual Rail-to-Rail
DACs with I²C Interface
Features
Description
n _{Smallest Pin-Compatible Dual DACs:}
LTC2607: 16 Bits
LTC2617: 14 Bits
LTC2627: 12 Bits
n _{Guaranteed Monotonic Over Temperature}
n _{27 Selectable Addresses}
n _{400kHz I}²_{C Interface}
n _{Wide 2.7V to 5.5V Supply Range}
n _{Low Power Operation: 260µA per DAC at 3V}
n _{Power Down to 1µA, Max}
n _{High Rail-to-Rail Output Drive (±15mA, Min)}
n _{Ultralow Crosstalk (30µV)}
n _{Double-Buffered Data Latches}
n _{Asynchronous DAC Update Pin}
n _{LTC2607/LTC2617/LTC2627: Power-On Reset to}
Zero Scale
n _{LTC2607-1/LTC2617-1/LTC2627-1: Power-On Reset}
to Mid-Scale
n _{Tiny (3mm × 4mm) 12-Lead DFN Package}
Applications
n _{Mobile Communications}
n _{Process Control and Industrial Automation}
n _{Instrumentation}
n _{Automatic Test Equipment}
The LTC^®2607/LTC2617/LTC2627 are dual 16-, 14- and
12-bit, 2.7V to 5.5V rail-to-rail voltage output DACs in a
12-lead DFN package. 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 and load regulation in single-supply,
voltage-output DACs.
The parts use a 2-wire, I²C compatible serial interface. The
LTC2607/LTC2617/LTC2627 operate in both the standard
mode (clock rate of 100kHz) and the fast mode (clock rate
of 400kHz). An asynchronous DAC update pin (LDAC) is
also included.
The LTC2607/LTC2617/LTC2627 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 LTC2607-1/LTC2617-1/
LTC2627-1 to mid-scale. The voltage outputs stay at mid-
scale until a valid write and update takes place.
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 and 6891433. Patent Pending.
Block Diagram
REFLO ¹¹
GND ¹⁰
12
V_OUTA
12-/14-/16-BIT DAC
DAC REGISTER
9
REF
8
V_CC
12-/14-/16-BIT DAC
7
V_OUTB
DAC REGISTER
INPUT REGISTER
INPUT REGISTER
32-BIT SHIFT REGISTER
CA0
CA1
LDAC
1
2
3
2-WIRE INTERFACE
SCL
4
SDA
5
CA2
6
2607 BD01a
Differential Nonlinearity
(LTC2607)
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
2607 BD01b
26071727fa