tea1065t NXP Semiconductors, tea1065t Datasheet - Page 17

• Manufacturer Part Number: tea1065t
• Description: Versatile Telephone Transmission Circuit With Dialler Interface
• Manufacturer: NXP Semiconductors

Philips Semiconductors
March 1994
Gain adjustment GAR (pin 6)
Mute input MUTE (pin 20)
V
V
I
G
Power-down input PD (pin 18)
V
V
I
Automatic gain control input AGC (pin 23)
I
I
Current limiting input CURL (pin 15)
V
H
I
Bandgap reference voltage output VBG (pin 12)
V
I
Z
SYMBOL
MUTE
PD
line
line
C(max)
BG
G
G
G
G
O
IH
IL
IH
IL
BE
BG
FE
Versatile telephone transmission circuit with
dialler interface
v
v
v
v
v
receiving amplifier, gain
adjustment range
input voltage HIGH
input voltage LOW
input current
change of microphone amplifier
gain
voltage gain from DTMF input
to QR or QR
input voltage HIGH
input voltage LOW
input current
controlling the gain from IR to
QR , QR and the gain from
MIC , MIC to LN; gain control
range with respect to
I
highest line current for
maximum gain
lowest line current for minimum
gain
change of gain between
I
base-emitter voltage drop of
internal transistor
current gain of internal
transistor
maximum collector current of
internal transistor
reference voltage
output drive capability
output impedance
line
line
= 15 mA
= 15 and 35.5 mA
PARAMETER
MUTE = HIGH
MUTE = HIGH;
R4 = 100 k
single-ended; RT = 300
R6 = 118 k
see Fig.13;
I
see Fig.13;
I
see Fig.13
note 1
C
C
= 50 A = I
= 50 A = I
CONDITIONS
17
DOC
DOC
1.5
1.5
-
-
60
11
19
5.5
100
MIN.
8
-
-
2.5
28
50
-1.5
0.7
120
1.22
-
12
70
17
5.9
TYP.
Product specification
V
0.3
15
V
0.3
5.0
2
8
15
6.3
50
MAX.
CC
CC
TEA1065
dB
V
V
dB
dB
V
V
dB
mA
mA
dB
V
mA
V
A
A
A
UNIT