Philips Semiconductors
Low voltage versatile telephone transmission circuit
with dialler interface and transmit level dynamic limiting
Product specification
TEA1064B
SYMBOL
PARAMETER
CONDITIONS
Gain adjustment input GAR (pin 6)
∆Gv
receiving amplifier gain
adjustment range
MUTE input (pin 14)
VIH
HIGH level input voltage
VIL
LOW level input voltage
Imute
input current
∆Gv
change of microphone amplifier
MUTE = HIGH
gain at mute on
Gv
voltage gain from input
DTMF-SLPE to QR+ output
with mute on
MUTE = HIGH;
single-ended load;
RL = 300 Ω
Power-down input PD (pin 15)
VIH
HIGH level input voltage
VIL
LOW level input voltage
IPD
input current
Automatic gain control input AGC (pin 18)
controlling the gain from
IR (pin 13) to QR+, QR−
(pins 4, 5) and the gain from
MIC+, MIC− (pins 8, 9) to LN (pin 1)
R6 = 93.1 kΩ
(between pins 18 and
11)
Gv
gain control range with respect to Iline = 75 mA
Iline = 15 mA
Iline
highest line current for maximum
gain
Iline
lowest line current for minimum
gain
∆Gv
change of gain between
Iline = 15 and 35 mA
Microphone mute input DLS/MMUTE (pin 7)
VIL
LOW level input voltage
IIL
input current at LOW level input
voltage
trel
release time after a LOW level on C16 = 470 nF
pin 7
∆Gv
change of microphone amplifier
gain at LOW level input voltage
on pin 7
MIN.
TYP.
−11
−
1.5 +VEE2 −
0
−
−
11
−
−100
−
−18
1.5 +VEE2 −
0
−
−
5
−5.7
−6.1
−
24
−
61
−0.9
−1.4
VEE1
−85
−
−
−
−60
30
−100
MAX. UNIT
+8
dB
VCC +0.4 V
0.3 +VEE2 V
20
µA
−
dB
−
dB
VCC1 +0.4 V
0.3 +VEE2 V
10
µΑ
−6.5
dB
−
mA
−
mA
−1.9
dB
VEE1 +0.3 V
−35
µA
−
ms
−
dB
March 1994
22