LTC2609IGN datasheet(10/20 Pages) LINER

10 / 20 page

LTC2609/LTC2619/LTC2629

26091929f

PIN FUNCTIONS

GND (Pin 1): Analog Ground.

REFLO (Pin 2): Reference Low. The voltage at this pin sets

the zero scale (ZS) voltage of all DACs. This pin can be

raised up to 1V above ground at VCC = 5V or 100mV above

ground at VCC = 3V.

REFA to REFD (Pins 3, 6, 12, 15): Reference Voltage

Inputs for each DAC. REFx sets the full-scale voltage of the

DACs. REFLO

≤ REFx ≤ VCC.

VOUTA to VOUTD (Pins 4, 5, 13, 14): DAC Analog Voltage

Outputs. The output range is from REFLO to REFx.

CA2 (Pin 7): Chip Address Bit 2. Tie this pin to VCC, GND

or leave it floating to select an I2C slave address for the part

(Table 1).

SCL (Pin 8): 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 VCC.

SDA (Pin 9): Serial Data Bidirectional Pin. Data is shifted

into the SDA pin and acknowledged by the SDA pin. This

pin is high impedance pin while data is shifted in and is an

open-drain N-channel output during acknowledgment.

SDA requires a pull-up resistor or current source to VCC.

CA1 (Pin 10): Chip Address Bit 1. Tie this pin to VCC, GND

or leave it floating to select an I2C slave address for the part

(Table 1).

CA0 (Pin 11): Chip Address Bit 0. Tie this pin to VCC, GND

or leave it floating to select an I2C slave address for the part

(Table 1).

VCC (Pin 16): Supply Voltage Input. 2.7V ≤ VCC ≤ 5.5V.

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