LTC2617 Linear Technology Corporation, LTC2617 Datasheet - Page 10

• Manufacturer Part Number: LTC2617
• Description: Ltc2617 - 14-bit Dual Rail-to-rail With I2c Interface
• Manufacturer: Linear Technology Corporation

LTC2607/LTC2617/LTC2627
PIN
CA0 (Pin 1): Chip Address Bit 0. Tie this pin to V
or leave it floating to select an I
part (Table 1).
CA1 (Pin 2): Chip Address Bit 1. Tie this pin to V
or leave it floating to select an I
part (Table 1).
LDAC (Pin 3): Asynchronous DAC Update. A falling edge
of this input after four bytes have been written into the part
immediately updates the DAC register with the contents of
the input register. A low on this input without a complete
32-bit (four bytes including the slave address) data write
transfer to the part wakes up sleeping DACs without
updating the DAC output. Software power-down is dis-
abled when LDAC is low. LDAC is disabled when tied high.
SCL (Pin 4): Serial Clock Input Pin. Data is shifted into the
SDA pin at the rising edges of the clock. This high
impedance pin requires a pull-up resistor or current source
to V
10
U
CC
.
FUNCTIONS
U
U
2
2
C slave address for the
C slave address for the
CC
CC
, GND
, GND
SDA (Pin 5): Serial Data Bidirectional Pin. Data is shifted
into the SDA pin and acknowledged by the SDA pin. This
pin is high impedance while data is shifted in and an open-
drain N-channel output during acknowledgment. Requires
a pull-up resistor or current source to V
CA2 (Pin 6): Chip Address Bit 2. Tie this pin to V
or leave it floating to select an I
part (Table 1).
V
range is V
V
REF (Pin 9): Reference Voltage Input. The input range
is V
GND (Pin 10): Analog Ground.
REFLO (Pin 11): Reference Low. The voltage at this pin
sets the zero scale (ZS) voltage of all DACs. The V
can be used at voltages up to 1V for V
for V
V
range is V
Exposed Pad (Pin 13): Ground. Must be soldered to
PCB ground.
OUTB
CC
OUTA
REFLO
(Pin 8): Supply Voltage Input. 2.7V ≤ V
CC
(Pin 12): DAC Analog Voltage Output. The output
(Pin 7): DAC Analog Voltage Output. The output
= 3V.
≤ V
REFLO
REFLO
REF
to V
to V
≤ V
REF
REF
CC
.
.
.
2
C slave address for the
CC
CC.
= 5V, or 100mV
CC
≤ 5.5V.
REFLO
CC
26071727f
, GND
pin