HC55185(2000) 데이터 시트보기 (PDF) - Intersil

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HC55185
(Rev.:2000)

VoIP Ringing SLIC Family

Intersil 

HC55185

Electrical Specifications

Unless Otherwise Specified, TA = -40oC to 85oC for industrial (I) grade and TA = 0oC to 85oC for commercial

(C) grade, VBL = -24V, VBH = -100V, -85V or -75V, VCC = +5V, AGND = BGND = 0V, loop current limit = 25mA.

All AC parameters are specified at 600Ω 2-wire terminating impedance over the frequency band of 300Hz to

3.4kHz. Protection resistors = 0Ω.

PARAMETER

TEST CONDITIONS

MIN TYP MAX UNITS

VCC to 2-Wire

f = 300Hz

f = 1kHz

-

40

-

dB

-

35

-

dB

f = 3.4kHz

-

28

-

dB

VCC to 4-Wire

f = 300Hz

f = 1kHz

-

45

-

dB

-

43

-

dB

f = 3.4kHz

-

33

-

dB

VBL to 2-Wire

VBL to 4-Wire

VBH to 2-Wire

VBH to 4-Wire

300Hz ≤ f ≤ 3.4kHz

300Hz ≤ f ≤ 3.4kHz

300Hz ≤ f ≤ 3.4kHz

300Hz ≤ f ≤ 1kHz

1kHz < f ≤ 3.4kHz

-

30

-

dB

-

35

-

dB

-

33

-

dB

-

40

-

dB

-

45

-

dB

NOTES:

2. These parameters are controlled via design or process parameters and are not directly tested. These parameters are characterized upon initial

design release and upon design changes which would affect these characteristics.

3. Differential Ringing Gain is measured with VRS = 0.795VRMS for -100V devices, VRS = 0.663 VRMS for -85V devices and VRS = 0.575VRMS

for -75V devices.

4. Longitudinal Balance is tested per IEEE455-1985, with 368Ω per Tip and Ring terminal.

5. These parameters are tested 100% at room temperature. These parameters are guaranteed not tested across temperature via statistical

characterization and design.

6. The power dissipation is based on actual device measurements and will be less than worst case calculations based on data sheet supply current

limits.

Product Family Cross Reference

The following table provides an ordering and functional cross

reference for the existing HC55180 thru HC55184 products

and the new and improved HC55185 product.

TABLE 1. PRODUCT CROSS REFERENCE

EXISTING DEVICES

FUNCTIONAL EQUIVALENT

HC55180CIM, HC55180DIM

None Offered

HC55181AIM, HC55182AIM

HC55185AIM

HC55181BIM, HC55182BIM

HC55185BIM

HC55181CIM, HC55182CIM

HC55185CIM

HC55181DIM, HC55182DIM

HC55185DIM

HC55183ECM, HC55184ECM

HC55185ECM

Any of the HC55185 products may be used without the

battery switch function by shorting the supply pins VBL and

VBH together. This provides compatibility with HC55180

type applications which do not require the battery switch.

Application Circuit Modifications

The HC55185 basic application circuit is nearly identical to

that of the HC55180 thru HC55184.The HC55185 requires

an additional resistor to program the transient current limit

feature. This programming resistor is connected from pin 16

(TL) to ground. In addition some component values have

been changed to improve overall device performance. The

table below lists the component value changes required for

the HC55185 application circuit.

TABLE 2. COMPONENT VALUE CHANGES

REFERENCE

HC55180 - 184

HC55185

RS

210kΩ

66.5kΩ

RP1

≥ 35Ω

≥ 49Ω

RP2

≥ 35Ω

≥ 49Ω

CFB

0.47µ

4.7µ

The value of RS is based on a 600Ω termination impedance

and RP1 = RP2 = 49.9Ω. Design equations are provided to

calculate RS for other combinations of termination and

protection resistance.

The CFB capacitor must be non-polarized for proper device

operation in Reverse Active. Ceramic surface mount

capacitors (1206 body style) are available from Panasonic

with a 6.3V voltage rating. These can be used for CFB since

it is internally limited to approximately 3V. The CDC

capacitor may be either polarized or non polarized.

4-6

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