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L9217G

Low-Cost Line Interface with Reverse Battery and PPM

Agere -> LSI Corporation 

L9217A/G Low-Cost Line Interface

with Reverse Battery and PPM

Data Sheet

November 2001

Electrical Characteristics

Minimum and maximum values are testing requirements in the temperature range of 25 °C to 85 °C and battery

range of –24 V to –70 V. These minimum and maximum values are guaranteed to –40 °C based on component

simulations and design verification of samples, but devices are not tested to –40 °C in production. The test circuit

shown in Figure 4 is used, unless otherwise noted. Positive currents flow into the device.

Typical values are characteristics of the device design at 25 °C based on engineering evaluations and are not part

of the test requirements. Supply values used for typical characterization are VCC = 5.0 V, VBAT = –48 V, unless oth-

erwise noted.

Table 4. Power Supply

Parameter

Min

Power Supply—Powerup, No Loop Current:

ICC

—

IBAT (VBAT = –48 V)

—

Power Dissipation (VBAT = –48 V)

—

Power Supply—Scan, No Loop Current:

ICC

—

IBAT (VBAT = –48 V)

—

Power Dissipation (VBAT = –48 V)

—

Power Supply—Disconnect, No Loop Current:

ICC

—

IBAT (VBAT = –48 V)

—

Power Dissipation (VBAT = –48 V)

—

Power Supply Rejection 500 Hz to 3 kHz

(See Figures 5, 6, 16, and 17.)1:

VCC

30

VBAT

36

Thermal Protection Shutdown (Tjc)1

150

Thermal Resistance Still Air, Junction to Ambient (θJA)1, 2:

Natural Convection 2S2P Board

—

Natural Convection 2S0P Board

—

Wind Tunnel 100 Linear Feet per Minute (LFPM) 2S2P Board

—

Wind Tunnel 100 Linear Feet per Minute (LFPM) 2S0P Board

—

Typ

5.2

–2.66

154

3.4

–0.9

57

1.9

–0.1

14

—

—

165

30

43

27

36

1. This parameter is not tested in production. It is guaranteed by design and device characterization.

2. Airflow, PCB board layers, and other factors can greatly affect this parameter.

Max

Unit

6.5

mA

–2.95

mA

175

mW

4.3

mA

–1

mA

70

mW

—

mA

—

mA

—

mW

—

dB

—

dB

—

°C

—

°C/W

—

°C/W

—

°C/W

—

°C/W

8

Agere Systems Inc.

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