HC-5524 查看數據表（PDF） - Harris Semiconductor

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HC-5524

SLIC Subscriber Line Interface Circuit

Harris Semiconductor 

HC-5524

Typical Applications

5V

5V

RS1 CS1

K1

K2

TIP

K1A

RB1

SECONDARY

PROTECTION

(NOTE 6)

VB-

C5

PRIMARY

PROTECTION

KIB

RS2

CS2

RING

VRING

RB2

150VPEAK (MAX)

PTC

Z1

SYSTEM CONTROLLER

SHD GKD PRI RS TEST F1 ALARM F0

RD

PR

TIP

ILIMIT

TF1 (NOTE 7)

TF2 (NOTE7)

VRX+

RF2 (NOTE 7)

RF1 (NOTE 7)

RFS

SLIC

HC-5524

VFB

VTX

-IN1

OUT1

RING

VB-

BG C2 DG AG

VB+ C1

C3

C4

5V

RL2

FROM PCM

RL1

FILTER/CODER

CAC

KRF

K(Z0 - RF/2)

TO HYBRID

BALANCE

NETWORK

FIGURE 1. TYPICAL LINE CIRCUIT APPLICATION WITH THE MONOLITHIC SLIC

TYPICAL COMPONENT VALUES

C1 = 0.5µF, 20V

C2 = 0.5µF-1.0µF ±10%, 20V (Should be nonpolarized)

C3 = 0.01µF, 50V ±20%

C4 = 0.01µF, 50V ±20%

C5 = 0.01µF, 50V ±20%

CAC = 0.5µF, 20V

K(Z0 - RF/2) = 50kΩ, (Z0 = 600Ω, K = Scaling Factor = 100)

RL1, RL2; Current Limit Setting Resistors

RL1+RL2 > 90kΩ

ILIMIT = (.6) (RL1 + RL2)/(200 x RL2), RL1 typically 100kΩ

KRF = 20kΩ, RF = 2(RB1+RB2), K = Scaling Factor = 100)

RB1 = RB2 = 50Ω (1% absolute, matching requirements cov-

ered in a Tech Brief)

RS1 = RS2 = 1kΩ typically

CS1 = CS2 = 0.1µF, 200V typically, depending on VRing and

line length.

Z1 = 150V to 200V transient protector. PTC used as ring

generator ballast.

NOTES:

8. All grounds (AG, BG, and DG) must be applied before VB+ or VB-. Failure to do so may result in premature failure of the part. If a user

wishes to run separate grounds off a line card, the AG must be applied first

9. Application shows Ring Injected Ringing, Balanced or Tip injected configuration may be used.

10. Secondary protection diode bridge recommended is 3A, 200V type.

11. TF1, TF2 and RF1, RF2 are on PLCC only and should be connected together as shown.

Additional information is contained in Application Note 549, “The HC-550X Telephone SLICs’’ By Geoff Phillips.

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