ES51919/ES51920
Features
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19,999/1,999 counts dual LCD display
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Current consumption: Typ. 25mA @ 100kHz
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QFP-100L package for ES51919
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SSOP-48L package for ES51920
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LCR meter chipset
Application
Handheld LCR bridge meter
Description
The chipset of ES51919/ES51920 is suitable
4-wire terminal with guarding measurement
for LCR bridge application. By using
AutoLCR smart check and measurement
ES51919/ES51920 to implement the LCR
bridge meter, the complicated PCB design is
Series/Parallel modes are selectable
not necessary. The ES51920 is the analog frond
Ls/Lp/Cs/Cp with D/Q/θ/ESR parameters
end chip with resistor switches network to
Open/Short calibration for AC impedance
provide different ranges control. It also
measurement is allowed:
provides a high performance integrated circuit
Open condition requirement: Impedance is
by the signal with different frequency to
larger than 9.5MΩ @ 1kHz
measure the complex impedance of the DUT
Short condition requirement: Impedance is less
by 5-terminals architecture. The ES51919 is
than 1.1Ω
the mix-mode processing chip to handle the
calculation of the D/Q/ESR/θ parameter with
Ls/Lp/Cs/Cp values. It also provides the user
interface and LCD drivers to support dual
display operation. Tolerance mode and relative
mode are including in the dual display
operation. A multiple-level battery detection
and auto power-off scheme are built-in to help
the improvement of battery life. The high
performance of 4.5digits ADC circuit design is
implemented in the ES51919/ES51920 chipset.
A fully smart measurement for L/C/R is
possible. User could measure the DUT
impedance simply without change function key
at the AUTOLCR smart mode
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Support DCR mode 200.00Ω~200.0MΩ
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Five different test frequency are available:
100/120/1k/10k/100k Hz
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Test ac signal level: 0.6mV
RMS
typ.
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6 range resistor range used
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Test range:
L: 20.000
µH
~ 2000 H
C: 200.00 pF ~ 20.00 mF
R: 20.000
Ω
~ 200.0 MΩ
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Multi-level battery voltage detector
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Support Backlight & Buzzer sound driver
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Source resistance depends on range
Min: 120Ω typical
Max:1MΩ typical
Ver 2.3
1
12/03/01
CYRUSTEK [ Cyrustek corporation ]
