E909.07 Datasheet, PDF (1/13 Pages) ELMOS Semiconductor AG – TRANSIMPEDANCE AMPLIFIER WITH HIGH SENSITIVITY

TRANSIMPEDANCE AMPLIFIER WITH HIGH SENSITIVITY
PRODUCTION DATA - MAR 25, 2014
E909.07
Features
General Description
ÿ Increases proximity detection range of
E909.05/E909.06 by a factor of 5 (*)
ÿ Improves signal to noise ratio by a factor of 3
ÿ Optical receiver with high sensitivity
(limiting output): total transimpedance typ. 422MΩ
ÿ Integrated op-amp for buffering,
gain or additional active filtering
ÿ Very low phase shift in input overdrive
ÿ High ambient light suppression up to photo
currents of 10mA
ÿ Signal bandwidth up to 500kHz
ÿ No current consumption in standby mode
ÿ Automotive qualified according to AEC-Q100
(*) in systems with highly focused IR beams and optimized
optical sensor surfaces
Applications
ÿ Optical receivers
ÿ Transimpedance amplifiers
ÿ Multiplex function for channel expander of
the chip set E909.05/E909.06
The optical receiver device consists of a first stage tran-
simpedance amplifier (TIA) with differential input, lim-
iting amplifiers with integrated high pass filter charac-
teristics and differential outputs OUTP_LA / OUTN_LA
and a secondary linear output OUT.
A very high sensitivity equivalent to a transimpedance
resistance of typ. 422MΩ is achieved at the limiting
outputs. By using a limiting amplifier no phase shift oc-
curs if the input is overdriven. Ambient light equivalent
to a constant photo current up to 10mA is suppressed
with an integrated gyrator.
Together with the HALIOS® chip set E909.05/E909.06
motion detectors a detection range of several meters
can be realized. By switching the output to high im-
pedance state several optical receivers can be multi-
plexed to the input of a HALIOS® multi-purpose sensor
IC E909.05/E909.06.
Ordering Information
Ordering No.: Temp. Range_Amb Package
E90907A52C -40°C to +105°C QFN20L4
CVDD
RVDD
AVDD
CGHS
GHS
C
CINN
INN
DP _CINP
INP
A
CGLS
GLS
GVDD
AVDD_LA
Gyrator
AVDD
IO_CTRL
AMP
-
+
AVDD/2
Gyrator
GGND
AGND
-
+
Limiting
Amplifier
E909.07
AGND_LA
OUT
GAIN_CTRL
OUTP_LA
OUTN_LA
ON_LA
ON
AN
KA
GPIO_1
GPIO_2
E909.06
HALIOS^®
Sensor IC
Elmos Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products.
Elmos Semiconductor AG
Data Sheet
QM-No.: 25DS0047E.04
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