U4089B-P_05 Datasheet, PDF (12/26 Pages) ATMEL Corporation – Monolithic Integrated Feature Phone Circuit

8. Electrical Characteristics (Continued)
f = 1 kHz, 0 dBm = 775 mV_rms, I_M = 0.3 mA, I_MP = 2 mA, RDC = 130 kΩ, T_amb = 25° C, RGSA = 560 kΩ,
Z_ear = 68 nF + 100Ω, Z_M = 68 nF, Pin 30 open (AGA), V_MUTX = GND, see Figure 8-11 on page 22 (AC tests), unless otherwise specified.
Parameters
Test Conditions
Pin
Symbol
Min.
Typ.
Max.
Unit
Gain at low operating current
I_L = 10 mA
I_MP = 1 mA
I_M = 300 µA
V_GEN = 560 mV
RDC = 68 kΩ
G_R
–8
–7
–6
dB
I_L = 10 mA
Distortion at low operating
current
I_MP = 1 mA
V_GEN = 560 mV
d_R
RDC = 68 kΩ
5
%
Speaker Amplifier
Minimum line current for
operation
No AC signal
I_Lmin
15
mA
Input resistance
23
14
22
kΩ
Gain from SAI to SAO
V_SAI = 3 mV,
I_L = 15 mA,
RGSA = 560 kΩ
RGSA = 20 kΩ
G_SA
35.5
36.5
37.5
dB
–3
dB
Output power
Output noise (input SAI
open) psophometrically
weighted
Load resistance
R_L = 50 Ω, d < 5%
V_SAI = 20 mV
I_L = 15 mA
I_L = 20 mA
I_L > 15 mA
P_SA
3
7
mW
P_SA
20
mW
n_SA
200
µV_psoph
Gain deviation
Mute suppression
I_L = 15 mA
T_amb = –10° C to +60° C
I_L = 15 mA,
V_L = 0 dBm,
V_SAI = 4 mV
Pin 23 open
∆G_SA
V_SAO
±1
dB
–60
dBm
Gain change with current
Resistor for turning off
speaker amplifier
I_L = 15 mA to 100 mA
I_L = 15 mA to 100 mA
∆G_SA
RG_SA
0.8
1.3
±1
dB
2
MΩ
Gain change with frequency
I_L = 15 mA
f = 300Hz to 3400Hz
∆G_SA
±0.5
dB
Attack time of anti-clipping 20 dB overdrive
t_r
Release time of anti-clipping
t_f
TMF Amplifier Test Conditions: IMP = 2 mA, IM = 0.3 mA, V_MUTX = VMP
Adjustment range of DTMF
gain
I_L = 15 mA
Mute active
G_D
5
ms
80
ms
40
50
dB
DTMF amplification
I_L = 15 mA,
V_DTMF = 8 mV
Mute active:
MUTX = VMP
G_D
40.7
41.7
42.7
dB
Gain deviaton
I_L = 15 mA
T_amb = –10° C to +60° C
G_D
±0.5
dB
12 U4089B-P
4518C–CORD–10/05