DMM Analog front end/Insulation
Features
•
6000 counts dual-slope SADC (2-5 cnvs/s.)
•
Input signal full scale: 630mV (Max. 6300 count)
•
Built-in 600 counts fast speed (x10) FADC
•
Fast ADC conversion rate: 20-50 times/s
•
100L LQFP package
•
3V DC regulated power supply
•
Support digital multi-meter function
*Voltage measurement (AC/DC)
*Current measurement (AC/DC)
*Dual mode for frequency with voltage or current
*Resistance measurement (600.0Ω – 60.00MΩ)
*Capacitance measurement (6.000nF – 60.00mF)
(Taiwan patent no.: 323347, 453443)
*Diode or continuity mode measurement
*Frequency counter with duty cycle display:
60.00Hz – 60.00MHz
5% – 95%
•
ADP mode (AC or DC mode is available)
•
3dB BW selectable for low pass filter at AC mode
(Taiwan
patent no.: 362409)
(China
patent no.: 1363073)
•
Band-gap reference voltage output
•
Peak-hold measurement
(Taiwan
patent no.:476418)
•
3-wire serial bus for MPU I/O port
•
MPU I/O power level selectable by external pins
•
On-chip buzzer driver and frequency selectable by
MPU command
•
High-crest-factor signal detection
(Taiwan
patent no.: 234661)
•
Multi-level battery voltage detection
•
Support sleep mode by external chip select pin
ES51996(6000counts)
Description
ES51996 is an analog frond end chip of
DMM built-in 6000(SADC)/600(FADC)
counts dual ADCs. The SADC is operated at
slower speed for higher resolution. The
FADC is operated at higher speed for lower
resolution. ES51996 provides voltage &
current (AC/DC) measurement, resistance
measurement, capacitance measurement,
diode/continuity measurement, frequency
measurement, duty cycle measurement and
voltage peak-hold function. An analog
switches network is built-in for insulation
resistance application. The ES51996 also
supports multi-level battery detection,
low-pass-filter feature for AC mode and dual
mode measurement for V+F & A+F. A 3-wire
serial bus for MPU I/O port will be used
easily for firmware design. Flexible function
design is supported for different kinds of
DMM or Clamp-on meter application.
.
Application
Clamp-on meter
Digital multi-meter
ver 2.8
1
12/02/03
CYRUSTEK [ Cyrustek corporation ]
