L9216B/H
High-Voltage Ringing SLIC with Ground Start
Preliminary Data Sheet
September 2001
Electrical Characteristics
(continued)
Table 13. ac Feed Characteristics
Parameter
ac Termination Impedance
1
Total Harmonic Distortion (200 Hz—4 kHz)
2
:
Off-hook
On-hook
Transmit Gain (f = 1004 Hz, 1020 Hz, current limit)
3
:
PT/PR Current to VITR
Receive Gain, f = 1004 Hz, 1020 Hz Open Loop:
RCVP or RCVN to PT—PR (gain of 8 option, L9216A)
RCVP or RCVN to PT—PR (gain of 2 option, L9216G)
Gain vs. Frequency (transmit and receive)
2
600
Ω
Termination,
1004 Hz, 1020 Hz Reference:
200 Hz—300 Hz
300 Hz—3.4 kHz
3.4 kHz—20 kHz
20 kHz—266 kHz
Gain vs. Level (transmit and receive)
2
0 dBV Reference:
–55 dB to +3.0 dB
Idle-channel Noise (tip/ring) 600
Ω
Termination:
Psophometric
C-Message
3 kHz Flat
Idle-channel Noise (VTX) 600
Ω
Termination:
Psophometric
C-Message
3 kHz Flat
Min
150
—
—
300 – 3%
7.76
1.94
Typ
600
—
—
300
8
2
Max
1400
0.3
1.0
300 + 3%
8.24
2.06
Unit
Ω
%
%
V/A
—
—
–0.3
–0.05
–3.0
—
–0.05
—
—
—
—
—
—
0
0
0
—
0
–82
8
—
–82
8
—
0.05
0.05
0.05
2.0
0.05
–77
13
20
–77
13
20
dB
dB
dB
dB
dB
dBmp
dBrnC
dBrn
dBmp
dBrnC
dBrn
1. Set externally either by discrete external components or a third- or fourth-generation codec. Any complex impedance R1 + R2 || C between
150
Ω
and 1400
Ω
can be synthesized.
2. This parameter is not tested in production. It is guaranteed by design and device characterization.
3. VITR transconductance depends on the resistor from ITR to VTX. This gain assumes an ideal 4750
Ω,
the recommended value. Positive cur-
rent is defined as the differential current flowing from PT to PR.
16
Agere Systems Inc.
ZARLINK [ ZARLINK SEMICONDUCTOR INC ]
