U4050B Datasheet, PDF (5/18 Pages) TEMIC Semiconductors – Speech Circuit with Line-Powered Loudspeaker Amplifier

U4050B
Parameters
Test Conditions / Pins Symbol Min.
Typ.
Max.
Unit
Gain at low operating
current
I_L = 10 mA, I_D = 1 mA
RC = 68 kΩ
V_mic = 1 mV I_M = 0 mA
G_S
47
50
dB
Distortion at low
I_L = 10 mA, I_M = 0 mA
operating current
I_D = 1 mA, RC = 68 kΩ
ds
6
%
Line loss compensation
V_mic = 10 mV
I_L = 100 mA
DG_SI
–5
–6
–7
dB
Mute suppression
w ^{RAGA = 7.5 kΩ}
I_L 15 mA
G_SM
60
dB
V_mute = 1.5 V
Receiving amplifier
Adjustment range of
receiving gain
w ^{see figures 6 and 8}
I_L 15 mA
G_R
–8
differential
+8
dB
Receiving amplification
Amplification of DTMF
signal from DTMF IN
to RECO 1/2
Frequency response
Gain change with current
Gain deviation
Ear protection
differential
Output resistance
Line loss compensation
Output voltage
Push pull
Single ended
Receiving noise
psophometrically
weighted
Gain at low operating
current
I_L = 15 mA
w ^differential
I_F 15 mA
Mute active
I_L > 15 mA, C_L = 4.7 nF
f = 300 to 3400 Hz
I_L = 15 to 100 mA
T_amb = –10 to + 60°C
w ^{IL = 15 mA}
I_L 15 mA
V_gen = 11 V_rms
Each output
against GND
I_L = 100 mA
v ^{RAGA = 7.5 kΩ}
I_L = 15 mA, d 2%
Z_H = 68 nF
Z_H = 450 Ω
Z_H = 150 Ω
Z_H = 68 nF
G_R = 0 dB
I_L > 15 mA
I_L = 10 mA
I_D = 1 mA
I_M = 0 mA
V_gen = 560 mV
RC = 68 kΩ
G_R
–1
– 0.5
0
dB
G_RM
– 15
– 12
–9
dB
DG_RF
DG_R
DG_R
" 0.5
dB
" 0.5
" 0.5
dB
dB
V_ep
2.2
V_rms
R_o
10
Ω
DG_RI
– 5.0
– 6.0
– 7.0
dB
0.775
0.6
V_rms
0.3
n_i
– 83
– 78.5 dBmp
G_R
– 1.5
+ 0.5
dB
Distortion at low
operating current
I_L = 10 mA, I_D = 1 mA
V_gen = 560 mV
RC = 68 kΩ
dr
5
%
Rev. A2, 05-Mar-98
5 (18)