Philips Semiconductors
Hands free IC
Product specification
TEA1094; TEA1094A
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
TRANSMIT MUTE INPUT MUTET
VIL
VIH
IMUTET
∆Gvtxm
LOW level input voltage
HIGH level input voltage
input current
voltage gain reduction with
MUTET active
MUTET = HIGH
MUTET = HIGH
VGND − 0.4 −
1.5
−
−
2.5
−
80
0.3
V
VBB + 0.4 V
5
µA
−
dB
Loudspeaker channel (RIN1, RIN2, GAR, LSP and DLC/MUTER)
LOUDSPEAKER AMPLIFIER
|Zi|
input impedance
between pins RIN1 or RIN2 17
and GND
between pins RIN1 and 34
RIN2
Gvrx
voltage gain in receive mode;
VRIN = 20 mV (RMS)
16
between RIN1 and RIN2 to LSP
∆Gvrxr
∆GvrxT
∆Gvrxf
voltage gain adjustment with RGAR
voltage gain variation with
VRIN = 20 mV (RMS);
temperature referenced to 25 °C Tamb = −25 to +75 °C
voltage gain variation with
frequency referenced to 1 kHz
VRIN = 20 mV (RMS);
f = 300 to 3400 Hz
−18.5
−
−
VRIN(rms) maximum input voltage between RGAR = 11.8 kΩ; for 2%
−
RIN1 and RIN2 (RMS value)
THD in input stage
Vnorx(rms)
noise output voltage at pin LSP
(RMS value)
inputs RIN1 and RIN2
−
short-circuited through
200 Ω in series with 10 µF;
psophometrically weighted
(P53 curve)
CMRR
common mode rejection ratio
−
∆Gvrxv
voltage gain variation related to
∆RVOL = 950 Ω
when total attenuation does −
not exceed the switching
range
20 23
kΩ
40 46
kΩ
18.5 21
dB
−
+14.5
dB
±0.3 −
dB
±0.3 −
dB
390 −
mV
80 −
µV
50 −
dB
3
−
dB
OUTPUT CAPABILITY
VOSE(p-p)
output voltage
(peak-to-peak value)
VRIN = 300 mV (RMS);
3.5
4.5 −
V
note 1
VRIN = 150 mV (RMS);
−
RGAR = 374 kΩ; RL = 33 Ω;
VBB = 9.0 V; note 2
7.5 −
V
IOM
maximum output current at LSP
(peak value)
150
500 −
mA
1996 Jul 15
15