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发表于 2013-1-18 08:23:09
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VOIP:LE9530CETC6 d( Y/ X- W( q0 R) a0 l8 _
The Le9530 Dual Ringing SLIC device is a dual-channel device optimized to provide battery feed, ringing, and supervision on voice loops found in short-loop VoIP applications. This device is optimized to interface to the Broadcom BCM3378/3380/3382 and BCM6816 devices, or a similar codec. The Le9530 device operates independently from a single, user-adjusted battery and a +3.3 V VCC per channel. Each channel provides forward and reverse battery feed, voice transmission, power ringing, an ultra low-power scan state, ground start (Tip open), and a disconnect state. A test load switch is also included to support integrated test algorithms.
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& u# e0 u3 R% z/ \! N$ TFeatures & Benefits. @( \8 w0 R* r3 v; k4 I2 `
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Dual Architecture' n; g7 p( r( l& t) C4 f4 \5 k* m' b
Two fully independent integrated SLIC channel
: M9 b! U! t% r: B* D No impulse noise crosstalk in any operation states to the listening channel in forward or reverse active states# i2 T' ]0 C/ _! s6 w: d
Two Power Supplies
6 n, S# z9 C7 _7 X" L/ A# h- D Single user adjusted battery input per channel
4 c2 ~5 S% }+ X- z: z4 i7 J a. H 3.3 V for VCC# [( T4 a. V* e& l% [
High Voltage Design
; c) M1 j4 s/ s, ^7 {0 M2 | Meets Comcast Ringing requirements without clipping5 b+ u* ?. k9 w- T
distortion; D. K& a9 T+ C0 t5 F
Robust solution with no damage during extended ringing cycles or switching the ringer on and off
5 p; l* I( ?- w: q6 d Allows use of 50 ? protection resistors and lower cost lower current rated protectors8 S( _5 ?! z0 u* t
Two Grades
/ d" ~" s6 w! s7 D8 a( S2 C Up to ?145 V ringing battery Le9530D, O3 ]+ q& D+ }4 R
Up to ?100 V ringing battery Le9530C8 I) M, `) a$ D& m, M
Channel Independent Eight Operating States4 t' [: j4 e, S! G! H
Scan state for minimal power dissipation
6 G+ F% p5 y9 J Active Forward Battery 25mA DC Current Limit
) g. m: n+ g2 L" w& K Active Reverse Battery 25mA DC Current Limit5 F# l/ o1 }* K" q8 y
Active Forward Battery 40mA DC Current Limit
/ B3 D& N* X( b H# w- W Active Reverse Battery 40mA DC Current Limit
2 z$ Y- \9 [% Z5 g2 u8 E Tip Open Ground Start' M, F- U9 |7 R
Ringing
' q2 b' U, T: v T- s Disconnect (Default Power Up Mode)
/ a% f3 m8 }: a. d) C Per Channel Ringing Inputs for Optimized Interface to BCM SoC Devcies
9 S9 {6 y9 Q2 } Allows to accept driving signals from per channel voice outputs as well as from PWM outputs # @+ j* r4 }* k( Q1 W
Ultra-Low On-Hook Power
' x) e8 l/ H2 ?3 J Loop Start, Ring Trip, and Ground Start Detections
2 p6 @ L; b! L( p Loop closure detection with hysteresis to minimize dial pulse distortion - E1 v# T2 U! C1 I$ U
Thermal Shutdown Protection with Hysteresis1 c* P: p0 n2 v: N% C* W% L3 u
Test Load Switch
' P- O. D, \# k# k3 U# j Supports integrated test algorithms |
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