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Integrated Circuits

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Integrated Circuits

Data Sheet

ET9590LH-5

3 CHANNEL DIFFERENTIAL AMPLIFIERCOMPARATOR w/BALANCE ADJUST, and Gated Z Channel

(Standard logic applications.)

FEATURES

Supply Voltage To 5V
Designed for photodiode inputs
Z (index) channel gated to A and B channels
Current sink for LED drive (see application note APP-D2)
Outputs short circuit protected
25mA peak drive current
Comparator hysteresis only 1.1 : 1

APPLICATIONS

High Speed Optical Encoders
Industrial Controls

This part is available in two packages, the 24 lead SOIC, and the 28 lead TSSOP. It is available also in chip form.

PACKAGE	SUFFIX
Chip Only	-C
16 Lead SOIC	-SOP

DESCRIPTION

While the ET9590LH-5 is very similar in performance to the ET9580LH, it is targeted for applications with 5V supply voltages. Applications previously using the 9590LH, with 5V supplies, may substitute this device as an equivalent part. For applications that require higher output voltages, (>5V), customers should consider using this device with a buffer device from the line driver category, such as the ET7272. For input imbalance trimming, see application note APP-D1.

ABSOLUTE MAXIMUM RATINGS

Parameter	Symbol	Min.	Max.	Units	Ref.
Operating Temperature Range	TA	-40	125	°C	Note 1
Supply Voltage Range	VCC	4.5	5.5	V	-

ELECTRICAL CHARACTERISTICS

Unless otherwise specified, typical values given at VCC=5V, TA = 25°C, with LED and RSET open.

Parameters	Symbol	Min.	Typ.	Max.	Units	Test Conditions
Supply Current	ICC	4.5	7.5	11.5	mA	-
Input Common Mode Voltage	VCM	-	1.35	-	V	-
Average Photocurrent Input	IIA	0.066	0.3	40	µA	Each input (Note 1)
Peak Photocurrent Input	IIP	0.13	0.5	60	µA	Each input (Note 1)
Dark Cell Level	IID	0.02	0.1	20	µA	Each input (Note 1)
Photocurrent Contrast Ratio	IIR	2:1	5:1	-	-	Peak:Dark Cell (Note 1)
Comparator Threshold	-	-	1.1:1	-	-	Ratio of Differential Inputs (Note 1)
Output High Level Voltage	VOH	2.5	3.0	-	V	IOH = -4mA, VCC = 4.5V
Output Low Level Voltage	VOL	-	199	400	mV	IOL = 8mA, VCC = 4.5V
Output Short-Circuit Current Driving High (All Outputs)	IOS	15	25	50	mA	VCC = 5V, VOUT = 0V
Output Short-Circuit Current Driving Low (All Outputs)	IOS	30	70	120	mA	VCC = 5V, VOUT = 5V
RSET Voltage	VRSET	1.3	1.7	2.1	V	R = 180 ohms

AC SWITCHING CHARACTERISTICS (Note 1)

Values given at VCC = 5V, TA = 25°C, CL = 15pF on all outputs, and photocurrent = 1µA minimum.

Parameters	Symbol	Min.	Typ.	Max.	Units	Test Conditions
Pre-Amplifier Bandwidth	BWPA	-	900	-	KHz	-
Propagation delay from Comparator Input to Output	TPD	-	850	-	ns	-
Output Rise Time	TR	-	100	-	ns	-
Output Fall Time	TF	-	20	-	ns	-

NOTES:

1. These parameters are controlled by process and are not tested on every lot.

ET9590-5line

ET9590LH-5out

ETIC RESERVES THE RIGHT TO MAKE CHANGES AT ANY TIME TO IMPROVE THE DESIGN AND TO SUPPLY THE BEST PRODUCT.