Datasheet Texas Instruments DDC316 — 数据表

DDC316
www.ti.com. SBAS370A – MARCH 2008 – REVISED APRIL 2009 16-Channel, Current-Input
Analog-to-Digital Converter
FEATURES DESCRIPTION 1 SINGLE-CHIP SOLUTION TO MEASURE 16
LOW-LEVEL CURRENTS INTEGRATING I-TO-V CONVERSION
FRONT-END PROGRAMMABLE FULL-SCALE : 3pC to 12pC ADJUSTABLE SPEED:
– Data Rate Up To 100kSPS
– Integration Time Down To 10µs ANALOG SUPPLY: +5V DIGITAL SUPPLY: +3.3V
2 For each of the 16 inputs, the DDC316 provides a
dual-switched integrator front-end. This configuration
allows for continuous current integration: while one
integrator is being digitized by the on-chip ADC, the
other is integrating the input current. Adjustable
integration times range from 10Вµs to 1ms.
The DDC316 provides a serial interface of the output
data, either multiplexed onto a single data output pin
or parallel on four output pins. The output mode can
be selected based on the available integration time. APPLICATIONS The DDC316 is a 16-bit, 16-channel, current-input
analog-to-digital converter (ADC). It combines both
current-to-voltage
and
analog-to-digital
(A/D) …