U4090B-P Datasheet, PDF (15/35 Pages) ATMEL Corporation – Monolithic Integrated Feature Phone Circuit EMI Improved

U4090B-P
6. 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 31 open, V_IMPSEL = GND, V_MUTX = GND, V_MUTR = GND, unless otherwise specified.
Parameters
Test Conditions
Symbol
Min.
Typ.
Max.
Noise at line psophometrically
weighted
Anti-clipping attack time
release time
I_L > 14 mA
G_T = 48 dB
CTXA = 1 µF
each 3 dB overdrive
no
–80
–72
0.5
9
Gain at low operating current
Distortion at low operating current
Line loss compensation
Mute suppression
a) MIC muted
(microphone preamplifier)
b) TXA muted (second stage)
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
R_AGA = 20 kΩ
I_L ≥ 14 mA
MUTX = open
IMPSEL = open
G_T
40
42.5
d_t
5
∆G_TI
G_TM
G_TTX
–6.4
–5.8
–5.2
60
80
60
Receiving Amplifier, I_L = 14 mA, R_GR = 62 kΩ, Unless Otherwise Specified, V_GEN = 300 mV
Adjustment range of receiving gain
I_L ≥ 14 mA, single ended
differential MUTR = GND
G_R
–8
–2
+2
+8
Receiving amplification
Amplification of DTMF signal from
DTMF IN to RECO 1, 2
Frequency response
R_GR = 62 kΩ differential
R_GR = 22 kΩ differential
I_L ≥ 14 mA
V_MUTX = V_MP
I_L > 14 mA,
f = 300 to 3400 Hz
G_R
G_RM
∆G_RF
–1.75
–1
–0.25
7.5
7
10
13
±0.5
Gain change with current
Gain deviation
Ear-protection differential
MUTE suppression
a) RECATT
b) RA2
c) DTMF operation
Output voltage d ≤2% differential
I_L = 14 to 100 mA
T_amb = –10 to +60°C
I_L ≥ 14 mA, V_GEN = 11 V_rms
I_L ≥ 14 mA
MUTR = open
V_MUTR = V_MP
V_MUTX = V_MP
I_L = 14 mA, Z_ear = 68 nF + 100Ω
∆G_R
∆G_R
EP
∆G_R
60
0.775
±0.5
±0.5
2.2
Maximum output current d ≤2%
Z_ear = 100Ω
4
Receiving noise psophometrically
weighted
Output resistance
Line loss compensation
Z_ear = 68 nF + 100Ω
I_L ≥ 14 mA
Each output against GND
R_AGA = 20 kΩ, I_L = 100 mA
ni
R_o
∆G_RI
–80
–77
10
–7.0
–6.0
–5.0
Unit
dBmp
ms
dB
%
dB
dB
dB
dB
dB
dB
dB
dB
dB
V_rms
dB
V_rms
mA
(peak)
dBmp
Ω
dB
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4741C–CORD–11/05