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TK14588VTL
Datasheet
20 pgs239.5 Kb0

TOKO TK14588VTL Datasheet

TK14588
FM IF IC
FEATURES
■ Input Frequency (~22 MHz)
■ Low Voltage Operation (2.3 to 5.5 V)
■ Battery Save Function
■ Wide Band Demodulator (~1 MHz)
■ High Speed Data Comparator (~2 Mbps)
DESCRIPTION
The TK14588V is a standard function general purpose IF IC capable of operating up to 22 MHz. The TK14588V contains a high-speed data comparator for base band processing. The TK14588V has a unique function that allows establishing the demodulation characteristics by changing the external RC time constant, and not changing the phase shifter constant. The RSSI output is individually trimmed, resulting in excellent accuracy, good linearity, and stable temperature characteristics. The TK14588V was developed for high-speed data communication, DECT, wireless LAN, keyless entry systems, etc.
APPLICATIONS
■ Communications Equipment
■ Wireless LAN
■ Keyless Entry Systems
TK14588V
IF INPUT
DECOUPLE
DECOUPLE
NC
POWER SAVE
V
CC
COMP OUTPUT
COMP GND
BLOCK DIAGRAM
GND RSSI IF OUTPUT DET INPUT DET OUTPUT AMP OUTPUT COMP INPUT COMP INPUT
The TK14588V is available in the very small TSSOP-16 surface mount package.
ORDERING INFORMATION
TK14588V
Tape/Reel Code
TAPE/REEL CODE
TL: Tape Left
GND
IF INPUT
DECOUPLE
DECOUPLE
DET OUTPUT
AMP OUTPUT
­+
AMP
COMP
V
CC
NC
POWER SAVE
CC
V
COMP INPUT
+
-
COMP OUTPUT
COMP INPUT
COMP GND
GND
RSSI
IF OUTPUT
DET INPUT
January 2000 TOKO, Inc. Page 1
TK14588
ABSOLUTE MAXIMUM RATINGS
Supply Voltage ........................................................... 6 V
Operating Voltage Range.............................. 2.3 to 5.5 V
Power Dissipation (Note 1) ................................ 160 mW
TK14588V ELECTRICAL CHARACTERISTICS
Test conditions: V
LOBMYSRETEMARAPSNOITIDNOCTSETNIMPYTXAMSTINU
= 3 V, fIN = 10.7 MHz, fm = 1 kHz, Modulation = ±50 kHz, T
CC
Storage Temperature Range ................... -55 to +150 °C
Operating Temperature Range ...................-30 to +85 °C
Operating Frequency Range (IF) ................. 6 to 22 MHz
Operating Frequecy Range (Demodulation) ..... to 1 MHz
= 25 °C, unless otherwise specified.
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I
CC
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V
ISSR
egatloVtuptuOISSR
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ROTARAPMOC
D
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Note 1: Power dissipation is 160 mW when mounted as recommended. Derate at 1.28 mW/°C for operation above 25°C.
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Page 2 January 2000 TOKO, Inc.
TEST CIRCUIT
(
)
TK14588
50 Ω
GND
~
0.01 µF
0.01 µF
IF-INPUT
RSSI OUT
3.3 kΩ
12 kΩ
0.01 µF 0.01 µF
1 pF
V
CC
836BH-0268 (TOKO)
1000 pF
51 kΩ
­+
P.S.
0.01 µF
DET OUTPUT
AMP
V
CC
COMP INPUT
V
CC
+
4.7 µF
COMP
V
CC
COMP
10 kΩ
+
3 kΩ
10 kΩ
COMP
OUT
0.01 µF
-
TYPICAL PERFORMANCE CHARACTERISTICS
TA = 25 °C, unless otherwise specified.
S+N, N, AM OUT, TOTAL
HARMONIC DISTORTION vs.
0
INPUT VOLTAGE
-20
-40
-60
S+N,N, AM OUT (dBV)
-80
THD
-100
S+N
AM OUT
(30% mod.)
N
20
16
12
8
4
0
%
THD
(V)
RSSI
V
-120 -100 -80 -60 -40 -20 0 20 VIN (dBm)
January 2000 TOKO, Inc. Page 3
RSSI OUTPUT VOLTAGE vs.
INPUT VOLTAGE
2.0
1.6
1.2
0.8
0.4
0.0
-120 -100 -80 -60 -40 -20 0 20 VIN (dBm)
V
CC
5.5 V
3.0 V
2.3 V
TK14588
(
)
(
) (
)
TYPICAL PERFORMANCE CHARACTERISTICS
TA = 25 °C, unless otherwise specified.
DETUNE CHARACTERISTICS
-10
-20
V
OUT
-30
(mVrms)
-40
OUT
V
-50
-60
10.3 10.5 10.7 10.9 11.1
THD
fIN (MHz)
SUPPLY CURRENT, OUTPUT VOLTAGE,
TOTAL HARMONIC DISTORTION vs.
SUPPLY VOLTAGE
300
I
260
CC
220
(dBV)
180
OUT
V
V
OUT
140
THD
100
2 3 4 5 6
VCC (V)
20
16
12
8
4
0
5
4
3
2
1
0
%
THD
(mA)
CC
THD (dB), I
S CURVE
3
2
(V)
OUT(DC)
1
V
0
10.3 10.5 10.7 10.9 11.1 fIN (MHz)
SIGNAL TO NOISE RATIO,
-3 dB LIMITING SENSITIVITY,
12 dB SINAD vs. SUPPLY VOLTAGE
80
70
S/N
60
-3 dB LIMITING SENSITIVITY
S/N (dB)
50
40
30
2 3 4 5 6
12 dB SINAD
VCC (V)
-50
-60
-70
dBm
-80
-90
12 dB SINAD
-3 dB LIMITING SENSITIVITY,
-100
SUPPLY VOLTAGE, OUTPUT VOLTAGE,
TOTAL HARMONIC DISTORTION
vs. TEMPERATURE
300
260
I
CC
220
V
(mVrms)
180
OUT
V
140
100
-40 -20 0 20 40 60 80 100
OUT
THD
TA (°C)
5
4
3
2
1
0
(mA)
CC
THD (%), I
80
70
60
S/N (dB)
50
40
30
SIGNAL TO NOISE RATIO,
-3 dB LIMITING SENSITIVITY,
12 dB SINAD vs. TEMPERATURE
S/N
-3 dB LIMITING SENSITIVITY
12 dB SINAD
-40 -20 0 20 40 60 80 100 TA (°C)
-50
-60
-70
dBm
-80
-90
12 dB SINAD
-3 dB LIMITING SENSITIVITY,
-100
Page 4 January 2000 TOKO, Inc.
TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
TA = 25 °C, unless otherwise specified.
TK14588
LIMITER GAIN vs.
INPUT FREQUENCY
100
80
60
40
GAIN (dB)
20
0
1 3 5 10 30 50
fIN (MHz)
Data Comparator Output Voltage Transient Response
(Rise)
OUT (1V/div)
RSSI OUTPUT VOLTAGE vs.
TEMPERATURE
2.0
1.8
1.6
(V)
RSSI
1.4
V
VIN = 0 dBm
VIN = -15 dBm
1.2
1.0
VIN = -30 dBm
-40 -20 0 20 40 60 80 100 TA (°C)
(Fall)
OUT
(1V/div)
IN (10 mV/div)
(10 mV/div)
IN
50 ns/div 50 ns/div
RSSI OUTPUT VOLTAGE vs.
TEMPERATURE
1.0
VIN = -45 dBm
0.8
0.6
(V)
RSSI
0.4
V
VIN = -60 dBm
VIN = -75 dBm
0.2
0.0
VIN = -90 dBm
-40 -20 0 20 40 60 80 100 TA (°C)
(V)
RSSI
V
RSSI OUTPUT VOLTAGE vs.
INPUT VOLTAGE
2.0
1.6
1.2
TEMP (deg)
-30
0.8
0.4
0.0
-120 -100 -80 -60 -40 -20 0 20
0 25 50 70 85
VIN (dBm)
January 2000 TOKO, Inc. Page 5
TK14588
(
)
(
)
(
)
3
2
(V)
OUT(DC)
1
V
0
9.9 10.3 10.7 11.1 11.5
TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
TA = 25 °C, unless otherwise specified.
S CURVE
V
CC
836BH-0268 (TOKO)
RD = 3.3 k
fIN (MHz)
RD
1 pF
RD = 1.0 k
RD = 2.0 k
C
51 kΩ
DET OUTPUT
OUTPUT VOLTAGE vs.
MODULATING FREQUENCY
2
0 dB = 208 mVrms
RD = 3.3 kΩ
0
(dB)
OUT
V
-2
-4
C = 1000 pF
-6
C = 330 pF
-8
-10
-12 1 3 10 30 100 300 1000
C = 47 pF
MODULATING FREQUENCY fm
OUTPUT VOLTAGE vs.
MODULATING FREQUENCY
2
0 dB = 35.2 mVrms
RD = 1.0 kΩ
0
(dB)
OUT
V
-2
-4
C = 1000 pF
-6
C = 330 pF
-8
C = ∞
C = 10 pF
C = ∞
C = 10 pF
kHz
OUTPUT VOLTAGE vs.
MODULATING FREQUENCY
2
0 dB = 107 mVrms
RD = 2.0 kΩ
0
(dB)
OUT
V
-2
-4
C = 1000 pF
-6
C = 330 pF
-8
-10
-12 1 3 10 30 100 300 1000
C = 47 pF
MODULATING FREQUENCY fm
C = ∞
C = 10 pF
kHz
-10
-12 1 3 10 30 100 300 1000
MODULATING FREQUENCY fm
C = 47 pF
kHz
Page 6 January 2000 TOKO, Inc.
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