LTC2221 datasheet(14/32 Pages) LINER

14 / 32 page

LTC2220/LTC2221

22201fa

PI FU CTIO S

MODE (Pin 58): Output Format and Clock Duty Cycle

Stabilizer Selection Pin. Connecting MODE to 0V selects

offset binary output format and turns the clock duty cycle

stabilizer off. Connecting MODE to 1/3VDD selects offset

binary output format and turns the clock duty cycle stabi-

lizer on. Connecting MODE to 2/3VDD selects 2’s comple-

ment output format and turns the clock duty cycle stabi-

lizer on. Connecting MODE to VDD selects 2’s complement

output format and turns the clock duty cycle stabilizer off.

SENSE (Pin 59): Reference Programming Pin. Connecting

SENSE to VCM selects the internal reference and a ±0.5V

input range. Connecting SENSE to VDD selects the internal

reference and a

±1V input range. An external reference

greater than 0.5V and less than 1V applied to SENSE

selects an input range of

±VSENSE. ±1V is the largest valid

input range.

VCM (Pin 60): 1.6V Output and Input Common Mode Bias.

Bypass to ground with 2.2

µF ceramic chip capacitor.

GND (Exposed Pad) (Pin 65): ADC Power Ground. The

exposed pad on the bottom of the package needs to be

soldered to ground.

LTC2221 bảng dữ liệu(PDF) 14 Page - Linear Technology