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ATTL7554BP

L7554 Low-Power SLIC

Agere -> LSI Corporation 

Data Sheet

March 1997

L7554 Low-Power SLIC

Electrical Characteristics (continued)

Table 6. Analog Pin Characteristics

Parameter

Differential PT/PR Current Sense (DCOUT)

Gain (PT/PR to DCOUT)

Offset Voltage @ ILOOP = 0, VBAT = –48 V

Loop Closure Detector Threshold1

Programming Accuracy

Ring Ground Detector Threshold2

RICM = 83 kΩ

Programming Accuracy

Ring Trip Comparator

Input Offset Voltage

RCVN, RCVP

Input Bias Current

Min

–119

–200

—

3

—

—

—

1. Loop closure threshold is programmed by resistor RLCTH from pin LCTH to pin DCOUT.

2. Ring ground threshold is programmed by resistor RICM2 from pin ICM to VCC.

Table 7. Uncommitted Op Amp Characteristics

Parameter

Min

Input Offset Voltage

—

Input Offset Current

—

Input Bias Current

—

Differential Input Resistance

—

Output Voltage Swing (RL = 10 kΩ)

—

Output Resistance (AVCL = 1)

—

Small Signal GBW

—

Typ

–125

—

—

6

—

—

–0.2

Typ

±5

±10

200

1.5

±3.5

2.0

700

Max

Unit

–127

V/A

200

mV

±20

%

10

kΩ

±25

%

±10

mV

–1

µA

Max

Unit

—

mV

—

nA

—

nA

—

MΩ

—

Vpk

—

Ω

—

kHz

Lucent Technologies Inc.

9

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