le7920 Zarlink Semiconductor, le7920 Datasheet
le7920
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le7920 Summary of contents
Page 1
... A Voice Solution The Le7920 Subscriber Line Interface Circuit implements the basic telephone line interface functions, and enables the DISTINCTIVE CHARACTERISTICS Control states: Active, Ringing, Standby, and Disconnect Low standby power (35 mW) – –58 V battery operation On-hook transmission Two-wire impedance set by single external ...
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... Physical Dimensions .17 32-Pin PLCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 Revision Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 Revision C to Revision .18 Revision D to Revision .18 Revision E to Revision .18 Revision F to Revision .18 Revision G to Revision .18 Revision H to Revision .18 Revision I1 to Revision .18 Revision J1 to Revision J2 .18 2 Zarlink Semiconductor Inc. ...
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... Council to minimize the environmental impact of electrical equipment. Valid Combinations –1 Le7920* –2 *Legerity reserves the right to fulfill all orders for this device with parts marked with the "Am" part number prefix, until such time as all inventory bearing this mark has been depleted. It should be noted that parts marked with either the "Am" or the "Le" part number prefix are equivalent devices in terms of form, fit, and function ...
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... Top View RYOUT2 RYOUT3 TMG VBAT DET Notes: 1. Pin 1 is marked for orientation Connect 32-Pin 7 PLCC Zarlink Semiconductor Inc HPB 27 HPA VTX 24 VBREF 23 RSN 22 AGND 21 ...
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... This is an Legerity reserved pin and must always be connected to the VBAT pin power supply. Transmit Audio. This output is a 0.50 gain version of the A(TIP) and B(RING) metallic voltage. VTX also sources the two-wire input impedance programming network. 5 Zarlink Semiconductor Inc. Description ...
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... Stresses above those listed under "Absolute Maximum Ratings" can cause permanent device failure. Functionality at or above these limits is not implied. Exposure to absolute maximum ratings for extended periods may affect device reliability BAT BAT + 0 Zarlink Semiconductor Inc. ...
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... The leads possess a matte-tin plating which is compatible with conventional board assembly processes or newer lead- free board assembly processes. The peak soldering temperature should not exceed 245°C during printed circuit board assembly. Refer to IPC/JEDEC J-Std-020B Table 5-2 for the recommended solder reflow temperature profile 7 Zarlink Semiconductor Inc. ...
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... L 0 dBm, 1 kHz 0 dBm, 1 kHz On hook 300 to 3.4 kHz relative to 1 kHz +3 dBm to –55 dBm relative to 0 dBm 0 dBm to –37 dBm +3 dBm to 0 dBm 0 dBm, 1 kHz 8 Zarlink Semiconductor Inc. Min Typ Max Unit 26 dB Ω –50 + ...
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... Active state, BAT = –48 V 100 kHz to 30 MHz, (See Figure RSN 200 Hz to 3.4 kHz I = 0.3 mA, 15 kΩ OUT –0.1 mA, 15 kΩ OUT CC Source resistance = 2 MΩ 9 Zarlink Semiconductor Inc. Min Typ Max Unit 0. ...
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... kΩ T2 RSN R = 150 kΩ This specification assumes that the two-wire, AC-load impedance matches TX RX network such as that shown in Note 1. The network reduces the group delay to less than T 10 Zarlink Semiconductor Inc. Min Typ Max Unit 11.5 17.3 9.4 14 4.4 +0.3 +0.7 100 6 7.2 ...
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... TMG Disconnect states. Power dissipated in the SLIC while in Active and Disconnect 0.12 L states. 11 Zarlink Semiconductor Inc. DET Output Ring trip Ring trip Loop detector Loop detector , and Z is the desired 2-wire AC input F 2WIN , the internal current amplifier T is defined above, and ...
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... R DC DC1 BAT = –48 V Notes: 1250 ----------- - where ---------- - = 0.857 + 3.3 – AB BAT L 300 ---------- - = 0.857 + 1.2 – AB BAT L 300 3 I (mA 54.34 kΩ DC2 Load Line (Typical) 12 Zarlink Semiconductor Inc ...
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... SLIC Feed current programmed Feed Programming Figure 1. DC Feed Characteristics Zarlink Semiconductor Inc. RSN R DC1 R DC2 RDC and R DC1 DC2 ...
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... V L4 BRS = 20 log ( A(TIP) VTX R L SLIC AGND RSN B(RING) S2 Closed, S1 Open 4-L Long. Sig. Gen log ( Longitudinal Balance 14 Zarlink Semiconductor Inc ...
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... S D. Two-Wire Return Loss Test Circuit V CC 6.2 kΩ A(TIP) DET B(RING Loop-Detector Switching 200 Ω 200 Ω RFI Test Circuit 15 Zarlink Semiconductor Inc. VTX R T1 SLIC AGND Ω CAX Ω ...
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... A(TIP) HPA RSN HPB B(RING) RDC RINGOUT RYOUT1 AGND/ DGND RYOUT3 RYOUT3 D3 D2 BGND D1 C2 VBREF VBAT C1 DET TMG CAS R TMG G. Le7920 Test Circuit 16 Zarlink Semiconductor Inc DC2 DC1 C DC BATTERY GROUND ANALOG ...
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... Exact shape of this feature is optional. 0.550 0.553 5 Details of pin 1 identifier are optional but must be located -- 10 deg within the zone indicated. 6 Sum of DAM bar protrusions to be 0.007 max per lead. 7 Controlling dimension : Inch. 8 Reference document : JEDEC MS-016 32-Pin PLCC 17 Zarlink Semiconductor Inc. ...
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... Deleted the plastic DIP package and references to it. • Updated the Pin Description table to correct inconsistencies. Revision H to Revision I • Updated device name from "Am7920" to "Le7920" throughout document. • Absolute Maximum Ratings: Notes updated to standard. • Operating Ranges: Temperature statement updated to standard. ...
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... I C Standard Specification as defined by Philips. Zarlink, ZL, the Zarlink Semiconductor logo are trademarks, and Legerity, the Legerity logo and combinations thereof are registered trademarks of Zarlink Semiconductor Inc. All other trademarks and registered trademarks are the property of their respective owners. © 2007 Zarlink Semiconductor Inc. All Rights Reserved. ...