Philips TEA6101T, TEA6101 Datasheet
INTEGRATED CIRCUITS
DATA SH EET
TEA6101/T
Antenna diversity circuit
Objective specification
File under Integrated circuits, IC01
May 1992
Philips Semiconductors Objective specification
Antenna diversity circuit TEA6101/T
FEATURES
• Ability to switch between up to four antennae
• Switching signal derived from two signals: the audio and
the level signals
• Floating switching threshold adjusts switching rate to
prevailing circumstances:
– increasing threshold due to excessive noise
– increasing threshold due to numerous level variations
GENERAL DESCRIPTION
Intended for multi-antenna FM car radio reception
(antenna diversity system), the TEA6101/T selects the
most favourable signal from one of up to four antennae.
Founded upon audible signal disturbance the criteria are
derived from two signals: high frequency components (e.g.
spikes due to noise and multipath reception) and
variations in signal level as a result of multipath reception
or fluctuations in field strength.
• Memory for the most favourable antenna signal to
overcome unnecessary switching
• Signal-dependent `soft` muting circuit
• Mode selection to the first antenna receiving an AM
signal whilst the diversity system is reset.
APPLICATIONS
• Car radio receivers
• Mobile radio communications equipment
QUICK REFERENCE DATA
SYMBOL PARAMETER MIN. TYP. MAX. UNIT
V
P
I
P
V
I(p-p)
I
os
V
L
T
amb
positive supply voltage − 8.5 − V
positive supply current − 14 − mA
audio input voltage (peak-to-peak value) −−3V
antenna switch output current (source/sink) −−7mA
−3 dB audio attenuation (soft mute) − 1.45 − V
operating ambient temperature range −30 − +85 °C
ORDERING INFORMATION
PACKAGE
EXTENDED TYPE NUMBER
PINS PIN POSITION MATERIAL CODE
TEA6101 18 DIL plastic SOT102
TEA6101T 20 SO plastic SOT163A
Notes
1. SOT102-1; 1996 September 10.
2. SOT163-1; 1996 September 10.
May 1992 2
(1)
(2)
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May 1992 3
supply
reference
voltage
0.1 µF
STABILIZER
1.5
R1
kΩ
ADDER
&
offset
TIMING
100
&
reset
R3
47 nF
ground
20
OFFSET
&
1
complete stop reset
Ω
15 2
memory
timing
MEMORY
LOAD
COMPARATOR
4 - STAGE
JOHNSON
COUNTER
MODE SELECT
control
19
18
17
16
level input
via
capacitor
audio input
0.47
µF
delay soft mute
33
nF
level input direct
3.3
kΩ
µF
1
3.3
nF
3
6
5
7
3.6 V
20
k
Ω
V
ref
ADDER
V
U
MUTE
33
audio output
V
I
20
Ω
k
VOLTAGE
REFERENCE
kΩ
14
µF
1
modulus output
4
ADDER
kΩ
1.5
R2
level
averaging
8
HIGH - PASS
FILTER
LOW - PASS
FILTER
offset
voltage
not connected
11 10 13 9 1
ADDER
V
(min)
ADDER
offset
voltage
ADDER
MONOSTABLE
MULTIVIBRATOR
noise
averaging
12
k
Ω
VOLTAGE
REFERENCE
&&
TEA6101T
12
test pin
MBA543 - 1
to
antenna
switch
Philips Semiconductors Objective specification
Antenna diversity circuit TEA6101/T
Fig.1 Block diagram.
handbook, full pagewidth
Philips Semiconductors Objective specification
Antenna diversity circuit TEA6101/T
PINNING
The pin numbers given in parenthesis refer to the
TEA6101
SYMBOL PIN DESCRIPTION
V
P
1 (1) positive supply
CTRL 2 (2) control input
AUDIN 3 (3) audio input
AUDOUT 4 (4) audio output
LID 5 (5) level input direct
LIC 6 (6) level input via capacitor
DSM 7 (7) delay soft mute
MODOUT 8 (8) modulus output
V
ref
9 (9) reference voltage
n.c. 10 − not connected
n.c. 11 − not connected
TEST 12 (10) test pin
NOAV 13 (11) noise averaging
LEAV 14 (12) level averaging
MT 15 (13) memory timing
OUT4 16 (14) output 4
OUT3 17 (15) output 3
OUT2 18 (16) output 2
OUT1 19 (17) output 1
GND 20 (18) ground
handbook, halfpage
MODOUT
Fig.2 Pin configuration (TEA6101T).
V
CTRL
AUDIN
AUDOUT
LID
LIC
DSM
V
REF
n.c.
1
P
2
3
4
5
TEA6101T
6
7
8
9
10
MBA542 - 1
20
GND
19
OUT1
18
OUT2
17
OUT3
16
OUT4
15
MT
14
LEAV
13
NOAV
12
TEST
n.c.
11
May 1992 4
handbook, halfpage
MODOUT
Fig.3 Pin configuration (TEA6101).
V
CTRL
AUDIN
AUDOUT
LID
LIC
DSM
V
REF
1
P
2
3
4
5
TEA6101
6
7
8
9
MBA541 - 1
GND
18
17
OUT1
OUT2
16
OUT3
15
OUT4
14
MT
13
LEAV
12
NOAV
11
TEST
10
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