LE57D111 PRODUCT PROFILE - Zarlink Semiconductor - (Version JPG) - Page n° 9 - PDF Catalogue | Technical Documentation

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Clock generator, Integrated circuit, Frequency synthesizer, Amplifier, Decoder

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Le5711

Data Sheet

Logic Output

(Applies to DET1 and DET2.)


Description	Test Conditions (See Note 1)	Min	Typ	Max	Unit	Note
V_OL, Output Low voltage	I_OUT = 0.3 mA			0.40	V
V_OH, Output High voltage	Iout = -0.1 mA	2.4			V

Ring-Trip Detector Input

(Applies to DAC, DB1, and DB2.)


Description		Test Conditions (See Note 1)	Min	Typ	Max	Unit	Note
Bias Current			-500	-50		nA
Common Mode Range			^vbat+ ¹		-2	V
Detector
Description		Test Conditions (See Note 1)	Min	Typ	Max	Unit	Note
Off-hook threshold	Active		9		11
On-hook threshold	Active		8.5		10.5
Off-hook threshold	Standby		4		6	mA
On-hook threshold	Standby		3.8		5.8
Hysteresis			0		2

Loop

Notes:

1. Unless otherwise noted, the test conditions are set up by the Le5711 device test circuit as illustrated in Figure 7, on page 14.

2. a. Overload level is defined as THD = 1%.

b. Overload level is defined when THD = 1.5%.

3. Not tested in production. This parameter is guaranteed by characterization or correlation to other tests.

4. This parameter is tested at 1 kHz in production. Performance at other frequencies is guaranteed by characterization.

5. Group delay can be greatly reduced by using a Z_T network such as that shown in Figure 5. The network reduces the group delay to less than 2 and increases 2WRL. The effect of group delay on linecard performance also may be compensated by synthesizing complex impedance with the QLSLAC™ device.

6. Minimum current level guaranteed not to cause a false loop detect.

SLIC Device Decoding

(For i, Channel = 1 or 2)


State	C2i	C1i	Two-Wire Status	DETx output
0	0	0	Disconnect	Ring-Trip Detector
1	0	1	Active	Loop Detector
2	1	1	Polarity Reversed (Le57D111 devices only)	Loop Detector
3	1	0	Standby	Loop Detector

Zarlink Semiconductor Inc.

LE57D111 PRODUCT PROFILE - Zarlink Semiconductor - #9

Clock generator, Integrated circuit, Frequency synthesizer, Amplifier, Decoder