ES51993
11,000 Counts ADC
Features
•
Max. 11,000 counts resolution
•
Conversion rate selectable by MPU
command: 1.6/s 128/s
•
Input signal full scale: 110mV
•
50/60Hz line noise rejection selectable by
MPU command
•
Low battery detection
•
Multiple input channels for ADC
•
3-wire serial bus and EOC signal for MPU
I/O port
•
-3V power operation with internal charge
pumping circuit
•
MPU I/O power level selectable by external
control pin
•
Support Peak Hold with calibration mode
•
Zero calibration for eliminating offset error
•
On-chip buzzer driving and frequency
selectable by MPU command
•
Support sleep mode by external CS(chip-
select) pin
Description
ES51993 is an 11000-count dual-slope analog-
to-digital converter (ADC) with peak hold
function. The conversion rate and buzzer
frequency can be selected or decided by an
external microprocessor. The conversion rate
can be varied from 1.6 time/sec to 128
times/sec
under
4MHz/12MHz
crystal
oscillation clock. Besides, ES51993 also
provides multi-channel input, low battery
detection, power-down mode, 50/60Hz line
noise rejection selection, and I/O port level
selection for flexible design.
Application
Clamp meter
Thermometer
Portable instrumentation
1
06/09/20
CYRUSTEK [ Cyrustek corporation ]
