U4089B Datasheet, PDF (11/25 Pages) ATMEL Corporation – MONOLITHIC INTEGRATED FEATUREPHONE CIRCUIT

U4089B-M
Electrical Characteristics (Continued)
f = 1 kHz, 0 dBm = 775 mV_rms, I_M = 0.3 mA, I_MP = 2 mA, RDC = 130 kW, T_amb = 25°C, RGSA = 560 kW,
Z_ear = 68 nF + 100 W, Z_M = 68 nF, Pin 20 open, V_MUTX = GND, unless otherwise specified.
Parameters
Test Conditions
Pin
Symbol
Min.
Anti-clipping
attack time
release time
CTXA = 1 µF
each 3 dB overdrive
Gain at low operating current
Distortion at low operating
current
Line-loss compensation
I_L = 10 mA
I_MP = 1 mA
RDC = 68 kW
V_mic = 1 mV
I_M = 300 µA
I_L = 10 mA
I_M = 300 µA
I_MP = 1 mA
RDC = 68 kW
V_mic = 10 mV
I_L = 100 mA,
RAGA = 20 kW
G_T
40
d_t
DG_TI
-6.4
Mute suppression,
MIC muted (microphone
preamplifier)
I_L ³ 14 mA
Mutx = open
G_TM
60
Receiving Amplifier, I_L = 14 mA, RGR = 62 kW, Unless Otherwise Specified, V_GEN = 300 mV
Adjustment range of
receiving gain
I_L ³ 14 mA,
single-ended
G_R
-8
Receiving amplification
RGR = 62 kW
RGR = 22 kW
G_R
-7.75
Amplification of DTMF signal
from DTMF IN to RECO
Frequency response
I_L ³ 14 mA
V_MUTX = V_MP
I_L > 14 mA,
f = 300 Hz to 3400 Hz
G_RM
1
DG_RF
Gain change with current
Gain deviation
Ear protection
MUTE suppression
DTMF operation
Output voltage d £ 2%
Maximum output current
d £ 2%
I_L = 14 to 100 mA
T_amb = -10 to +60°C
I_L ³ 14 mA
V_GEN = 11 V_rms
I_L ³ 14 mA
V_MUTX = V_MP
I_L = 14 mA
Z_ear = 68 nF
Z_ear = 100 W
DG_R
DG_R
EP
DG_R
60
0.5
4
Receiving noise
psophometrically weighted
Output resistance
Line-loss compensation
AC impedance
Z_ear = 68 nF + 100 W
I_L ³ 14 mA
Output against GND
RAGA = 20 kW,
I_L = 100 mA
n_i
R_o
DG_RI
-7.0
Z_imp
840
Typ.
0.5
9
-5.8
80
-7
1.5
4
-80
-6.0
900
Max.
Unit
ms
ms
42.5
dB
5
%
-5.2
dB
dB
+2
-6.25
7
±0.5
±0.5
±0.5
1.1
-77
10
-5.0
960
dB
dB
dB
dB
dB
dB
Vrms
dB
V_rms
mA
(peak)
dBmp
W
dB
W
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4570A–CORD–04/03