U4089B-P Datasheet, PDF (10/26 Pages) ATMEL Corporation – Monolithic Integrated Feature Phone Circuit

Electrical Characteristics
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 k,
Z_ear = 68 nF + 100 Ω, Z_M = 68 nF, Pin 30 open (AGA), V_MUTX = GND, see Figure 22 (AC tests), unless otherwise specified.
Parameters
Test Conditions
Pin
Symbol
Min.
Typ.
Max.
DC Characteristics (see Figure 19)
DC voltage drop over circuit
I_L = 2 mA
I_L = 14 mA
I_L = 60 mA
I_L = 100 mA
V_L
4.6
8.8
Transmission Amplifier, I_L = 14 mA, V_MIC = 2 mV, RGT = 27 k, Unless Otherwise Specified
Adjustment range of transmit
gain
G_T
40
2.4
5.0
5.4
7.5
9.4
10.0
45
50
Transmitting amplification
RGT = 12 k
RGT = 27 k
G_T
47
48
49
39.8
41.8
Frequency response
I_L ≥ 14 mA,
f = 300 to 3400 Hz
∆G_T
± 0.5
Gain change with current
Gain deviation
CMRR of microphone
amplifier
Pin 30 open (AGA),
I_L = 14 to 100 mA
T_amb = -10 to +60°C
∆G_T
± 0.5
∆G_T
± 0.5
CMRR
60
80
Input resistance of MIC
amplifier
RGT = 12 k
RGT = 27 k
R_i
50
45
75
110
Distortion at line
Maximum output voltage
I_L > 14 mA
V_L = 700 mV_rms
I_L > 19 mA, d < 5%
V_mic = 25 mV
CTXA = 1 µF
d_t
2
V_Lmax
1.8
3
4.2
Noise at line psopho-
metrically weighted
Anti-clipping
attack time
release time
I_L > 14 mA
G_T = 48 dB
CTXA = 1 µF
each 3 dB overdrive
n_o
-80
-72
0.5
9
Gain at low operating
current
Distortion at low operating
current
Line-loss compensation
I_L = 10 mA
I_MP = 1 mA
RDC = 68 kΩ
V_mic = 1 mV
I_M = 300 µA
I_L = 10 mA
I_M = 300 µA
I_MP = 1 mA
RDC = 68 kΩ
V_mic = 10 mV
I_L = 100 mA,
RAGA = 20 kΩ
G_T
40
42.5
d_t
∆G_TI
5
-6.4
-5.8
-5.2
Mute suppression
a) MIC muted
(microphone
preamplifier)
I_L ≥ 14 mA
Mutx = open
G_TM
60
80
Unit
V
V
V
V
dB
dB
dB
dB
dB
dB
kΩ
%
dBm
dBmp
ms
ms
dB
%
dB
dB
10 U4089B-P
4518A–CORD–05/02