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| U4089B-P_05 Datasheet, PDF (13/26 Pages) ATMEL Corporation – Monolithic Integrated Feature Phone Circuit | |||
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U4089B-P
8. Electrical Characteristics (Continued)
f = 1 kHz, 0 dBm = 775 mVrms, IM = 0.3 mA, IMP = 2 mA, RDC = 130 kâ¦, Tamb = 25° C, RGSA = 560 kâ¦,
Zear = 68 nF + 100â¦, ZM = 68 nF, Pin 30 open (AGA), VMUTX = GND, see Figure 8-11 on page 22 (AC tests), unless otherwise specified.
Parameters
Test Conditions
Pin
Symbol
Min.
Typ.
Max.
Unit
Input resistance
RGT = 27 kâ¦,
RGT = 15 kâ¦
Ri
60
26
180
300
70
130
kâ¦
Distortion of DTMF signal
IL ⥠15 mA
VL = 0 dBm
Gain deviation with current IL = 15 mA to 100 mA
AFS Acousting Feedback Suppression
dD
âGD
2
%
±0.5
dB
Range of attenuation
IL ⥠15 mA
Attenuation of transmit gain
IL ⥠15 mA,
IINLDT = 0 µA
RATAFS = 30 kâ¦
IINLDR = 10 µA
Attenuation of speaker
amplifier
IL ⥠15 mA
IINLDP = 0 µÎ
RATAFS = 30 kâ¦
IINLDR = 10 µÎ
AFS disable
IL ⥠15 mA
Supply Voltages, Vmic = 25 mV, Tamb = â10° C to +60° C
IL = 14 mA,
VMP
RDC = 68 kâ¦
IMP = 2 mA
IL ⥠14 mA,
VM
IM = 300 µA
RDC = 130 kâ¦
0
50
dB
âGT
45
dB
âGSA
50
dB
VATAFS
1.5
V
VMP
3.1
3.3
3.5
V
VM
1.4
3.3
V
VB
IB = +20 mA,
IL = 0 mA
MUTX Input (see Figure 8-9 on page 20)
VB
7
7.6
V
Input current
Input voltage
VMUTX = VMP
VMUTX = GND
Input high
Input low
IMUTX
IMUTX
+20
+30
µA
â20
â30
µA
VMUTX
VMP â
0.3V
V
VMUTX
0.3
V
13
4518CâCORDâ10/05
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