TEA1098 Philips Semiconductors, TEA1098 Datasheet - Page 25

• Manufacturer Part Number: TEA1098
• Description: Speech and handsfree IC
• Manufacturer: Philips Semiconductors

Philips Semiconductors
1999 Oct 14
Automatic Gain Control (pin AGC)
I
I
Logic inputs (pins HFC and MUTE)
V
V
I
Handsfree mode (HFC = HIGH)
HF
G
V
HF
G
start
stop
i
G
G
G
G
G
G
G
G
G
IL
IH
no(TXOUT)(rms)
Speech and handsfree IC
v(TXIN-TXOUT)
v(HFRX-LSAO)
SYMBOL
v(trx)
v
v(f)
v(T)
v(mute)
v
v(f)
v(T)
v(vol)
MICROPHONE AMPLIFIER
LOUDSPEAKER AMPLIFIER
gain control range for transmit
and receive amplifiers affected
by the AGC; with respect to
I
highest line current for maximum
gain
lowest line current for maximum
gain
LOW-level input voltage
HIGH-level input voltage
input current
voltage gain from pin TXIN to
TXOUT
voltage gain adjustment with
R
gain variation with frequency
referenced to 1 kHz
gain variation with temperature
referenced to 25 C
noise output voltage at pin
TXOUT; pin TXIN is shorted
through 200
10 F to GNDTX (RMS value)
gain reduction if not activated
voltage gain from pin HFRX to
LSAO
voltage gain adjustment with
R
gain variation with frequency
referenced to 1 kHz
gain variation with temperature
referenced to 25 C
voltage gain variation related to
line
R
GATX
GALS
for pin HFC
for pin MUTE
VOL
= 15 mA
= 1.9 kW
PARAMETER
(
PINS
(
PINS
in series with
TXIN, TXOUT
HFRX, LSAO, GALS
AND
I
G
I
V
V
R
f = 300 to 3400 Hz
T
psophometrically weighted
(p53 curve)
see Table 2
V
R
I
f = 300 to 3400 Hz
T
when total attenuation
does not exceed the
switching range
line
line
line
GATX)
amb
amb
BB
TXIN
HFRX
GATX
GALS
v(IR-RECO)
= 70 mA; G
= 70 mA for G
= 70 mA
AND
= 3.0 V
= 25 to +75 C
= 25 to +75 C
= 3 mV (RMS);
25
CONDITIONS
= 30.1 k
= 30 mV (RMS);
= 255 k ;
VOL)
v(MIC-LN)
v(HFTX-LN)
;
5.45
5.8
1.8
12.7
60
25.5
MIN.
15
28
0.4
6.45
6.8
23
57
3
15.2
80
28
3
0.1
0.15
101
0.3
0.3
3
TYP.
Product specification
7.45
7.8
+0.3
V
6
17.7
+16
30.5
+7
12
TEA1098
BB
MAX.
+ 0.4 V
dB
dB
mA
mA
V
dB
dB
dB
dB
dBmp
dB
dB
dB
dB
dB
dB
UNIT
A
A