1CHIP ANALOG CORDLESS TRANSCEIVER 64-QFP-1420C KA8510 monolithic
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KA8510
1CHIP ANALOG CORDLESS TRANSCEIVER
64-QFP-1420C KA8510 monolithic circuit which used high performance 46/49MHz type Cordless Phone System. transceiver FM/FSK transmitting/receiving system, complete chip FM/FSK transceiver 49MHz which includes transmitting receiving functions FM/FSK, COMPANDOR remove external noise, (Phase Locked Loop) channel selection function which blocks surrounding frequency interference. wide range applications FM/FSK transmitting/receiving bandwidth, including cordless phone, narrow band voice data transmitting/receiving system. make applications easy simple, peripheral parts were minimized.
ORDERING INFORMATION
Device KA8510Q Package 64-QFP-1420C Operating Temperature -25°C 75°C
FEATURES
Operating voltage range Typical supply current 20mA Built-in dual conversion receiver, transmitter, compandor Compandor part Easy gain control external component Included (automatic level control) circuit Mute logic, Data Transmitter part Included variable capacitance Adjustable power gain Receiver part Complete dual conversion circuit with amplifier Excellent input sensitivity (0.7µVrms 12dB SINAD) part 10/15 channels selectable (both transmitter/receiver) Include oscillation circuit with external crystal (10.24MHz) Unlock detector (Phase difference more than 6.25µs)
1CHIP ANALOG CORDLESS TRANSCEIVER
COMP
VREF COMP DSCO DSCI
2LOI
2LOI
Carriier Detector
1LOI
VCORX
2'nd
Limiting Carriier Deeteoorr
GNDPLL (PLL (PLL AMPOTX AMPITX
10.7MHz
1'st
Quad Detector
Meter Driver
COMP
455Khz VREF VREF Limiter 125K 125K 125K Gain Cell VREF
GNDCOMP
CPI+
CPI24
1'st Reference Divider 10.24MHz Gain Cell
PROG.TX Prescator VCOTX PROG.RX Prescater Modulator Phase Detector Phase Detector Unclock Detector Detector Compandor Mute
VARICAP GNDPLL VCORX FROSC GNDTX TEST1 TEST2 MODE
Rectifier
CMUTE VCC(TX)
BLOCK DIAGRAM
EMUTE
KA8510
KA8510
CONFIGURATION
1CHIP ANALOG CORDLESS TRANSCEIVER
VCC(PLL VCC(PLL AMPO AMPITX VCC(TX) VARICAP TEST1 TEST2 VCORX GNDPLL MODE VCC(COMP) GND(COMP) AGIC CMUTE EMUTE
VREF(COMP)
GNDRX
VCC(RX)
DSCO
DSCI
KA8510
DESCRIPTION
Symbol Description Generates carrier signal modulates frequency. audio signal enters terminal causes internal reactance vary, which changes frequency generated from coil tank, resulting frequency modulation. Input terminal carrier signal. varying capacitor value, which connected between terminals, amount frequency modulation (Hz/mV) adjusted. Larger capacitor value increases amount modulation. GNDTX Ground. Ground transmitter part. Variable capacitor included chip. Since oscillation frequency VARICAP changes according detected pulse error influences variable capacitor, becomes useful when channel being changed. bypass terminal modulator. capacitor connected between this terminal GND. Input terminal modulator. inputs audio signal through comp6 ressor compandor modulate Variation generated frequency voltage (mV) this terminal becomes sensitivity frequency modulation.
KA8510
1CHIP ANALOG CORDLESS TRANSCEIVER
Symbol
Description COMPRESSOR output terminal COMPANDOR, connected modulation input terminal transmitter. phase detector output terminal transmitter PLL.
fREF leading output negative pulse. fREF lagging output positive pulse. fREF same phase output high impedance. phase detector output terminal transmitter PLL.
fREF leading output negative pulse. fREF lagging output positive pulse. fREF same phase output high impedance. This variable capacitor terminal, included chip. used
VCORX
input terminal where local oscillation frequency oscillates. internal variable capacitor value 10~25pF according applied voltage (0.7~VCC)
output terminal lock detector transmitter stage PLL. Output lock state, high unlock state.
GNDPLL
Ground used ground logic section PLL. This terminal tests operation PLL. operated together with test2. When use, resistor connected between this terminal. input terminal test. When test high, outputs
TEST1
TEST2
programmable divider Tx-programmable divider tested terminal. PLL' mode selection terminal. This terminal high used
MODE
base cordless phone, used hand cordless phone.
decode input terminal PLL' channel selection. Four binary code D0(LSB) D3(MSB) given MICOM. These inputs have internal pull down devices EXPANDER MUTE terminal COMPANDOR, final MUTE block EXPANDER located next receiver terminal. blo-
MUTE
data signal MICOM being transmitted user, connected MUTE terminal MICOM. Expanding executed low.
KA8510
1CHIP ANALOG CORDLESS TRANSCEIVER
Symbol
Description COMPRESSOR MUTE terminal COMPANDOR. MUTE block inserted before data input terminal COMPRESSOR avoid duplication data transmission from MICOM (between base hand set)
MUTE
with voice signal. connected MUTE terminal MICOM. Compressing executed this terminal high, COMPRESSOR MUTE executed low. data input terminal COMPRESSOR, used transmit data
handset MICOM baseset, data baseset MICOM handset. This terminal connected data output terminal MICOM. This terminal used bypassing element feedback loop
AGIC
which comes from block COMPRESSOR. capacitor should connected between this terminal GND. This terminal used converting waveform from full wave rectifier
element rectifier block COMPRESSOR. 22msec)
inverting input terminal COMPRESSOR, used adjusting negative feedback loop gain. application, gain
non-iverting input terminal COMPRESSOR, used input terminal voice signal.
GNDCOMP
Ground Ground COMPANDOR Supply voltage Power supply terminal COMPANDOR output terminal EXPANDER, which regenerated voice signal comes out. This terminal used inverting waveform from full wave rectifier
VCC(COMP)
element rectifier block EXPANDER. msec) input terminal EXPANDER. After demodulated signal
passed through order pass filter, voice signal enters this terminal.
KA8510
1CHIP ANALOG CORDLESS TRANSCEIVER
Symbol
Description input reference voltage terminal (Automatic Level Control). circuit turned according reference voltage, magnitude output voltage limited higher than certain
level. used adjusting output voltage COMPRESSOR less than limit frequency deviation case input higher than certain level.
VREF(COMP)
voltage reference (VREF used supplying constant voltage COMPRESSOR EXPANDER COMPANDOR. output terminal carrier detector, outputs contents buffer Meter Driver which turned on/off according certain sig-
level detected Meter driver. Since this terminal open collector output type, requires pull-up resistor, connected RSSI terminal MICOM. output terminal Meter Driver. (RSSI Received Signal Strength Indicator) Amplitude input signal useful frequency detected Meter
Driver circuit. Meter Driver circuit perfect linear characteristic 60dB range input signal level. (0.1µA/dB) output terminal Data Slicing Comparator.
DSCO
separates (Frequency-Shift Keying) Serial data executes data shaping limiting.
DSCI
input terminal Data Slicing Comparator, non-inverting type with negative input terminal biased VCC.
recovered audio output terminal. Voice signal which detected Quadrature Detector amplified then output this terminal. Quadrature Coil input terminal. 455KHz Oscillator circuit com-
prised 680µH, 180pF, Tank circuit. Voice signal detected mixture 455KHz phase difference) with converted from second Mixer.
GNDRX
Ground Ground receiver
KA8510
1CHIP ANALOG CORDLESS TRANSCEIVER
Symbol
Description Limiter input Decoupling terminal, used removing amplitude modulation element caused fading noise signal.
Limiting amplifier amplifies limits second intermediate frequency 455KHz signal.
input impedance Limiting amplifier designed 1.5Kohm. While wave transmitted with constant magnitude, magnitude slightly modulated reflection from obstacles, fading phenomenon, noise wave, etc., mixed with wave element before enters receiver' antenna. Limiter makes uniform amplitude removing these wave element.
VCC(RX)
Supply Voltage This terminal used supplying power receiver. output terminal second mixer. Second intermediate frequency
455KHz, generated mixing first intermediate frequency (10.7MHz) second local oscillator, output.
input terminal second local oscillator. generates second local oscillator frequency convert output from first Mixer (10.7MHz) second intermediate frequency. oscillator with crystal 10.24MHz,10.245 MHz.
input terminal second Mixer. Output from first Mixer entered second Mixer input terminal 10.7MHz ceramic filter. Second Mixer converts frequency second intermediate frequency (455KHz IF). output terminal first Mixer. Signal from first Mixer frequency first local oscillator mixed become first intermediate freque-
ncy, which then output through this terminal. output terminal made emitter follower with output impedance 330ohm match 330ohm input/output impedance 10.7MHz ceramic filter.
input terminal first local oscillator. local oscillator voltage controlled oscillator. Local oscillation frequency received frequency mixed first Mixer then converted first intermediate frequency 10.7MHz.
KA8510
1CHIP ANALOG CORDLESS TRANSCEIVER
Symbol
Description input terminal first Mixer. This Mixer made double balanced multiplier. Received signal (46/49 MHz) amplified input this terminal. collector terminal amplifier transistor.
Amount amplification selected using resistor load amplifier collector. emitter terminal amplifier transistor. gain adjusted using resistance emitter dege-
neration. 1.5mA when emitter connected ground, voltage gain Kohm collector load 20dB base terminal amplifier transistor. Base biased internally about 0.8V from common-emitter
plifier design. This amplifies subtle signal received antenna proper size conversion into first intermediate frequency (10.7MHz).
Ground Ground analog PLL.
VCC(PLL
Supply Voltage This terminal supplies power from area. Supply Voltage This terminal supplies power from area. This terminal outputs transmission frequency (46/49MHz) from oscilla-
VCC(PLL
tor. spurious characterestics adjusted connection capacitor between this terminal. This output terminal POWER AMP, open collector type.
AMPO
provides point oscillation amplification narrow bandwidth transmitter output. This terminal controls gain POWER AMP, open base type.
AMPI
gain selected connecting variable resistor between this terminal. Supply Voltage
VCC(TX)
transmitter. permits voltage supply seperately transmission output desired.
KA8510
1CHIP ANALOG CORDLESS TRANSCEIVER
ABSOLUTE MAXIMUM RATINGS
Characteristics Maximum Supply Voltage Power Dissipation Junction Temperature Operation Temperature Storage Temperature Symbol Value Unit
ELECTRICAL CHARACTERISTICS
Characteristic Operating Voltage Total Operating Current Symbol Test Conditions Unit
RECEIVER (VCC 49.7MHz, fDEV 3KHz, fMOD 1KHz, 25°C, Unless otherwise specified) Operating Current Operating Current Input -3dB Sensitivity VLIM RFin 1mVrms RFin 1mVrms RFin 1mVrms RFin 1mVrms -3dB Modulation Input None Modulation Input Modulation Input None Modulation Input RFin 1mVrms Recoverd Audio Output VO(RA) fmod 1KHz fdev 3KHz Noise Output Level Recoverd Audio Output Voltage Drop Direct Output Voltage Carrier Detector Throshold VO(RAD) VO(DET) VTH(DET) RFin None Input RFin 1mVrms RFin 1mVrms RFin None Input RL(34) 0.49 0.60 0.73 -1.5 mVrms mVrms µVrms µVrms
Input 20dB Sensitivity
VI(SEN)
Ratio
KA8510
1CHIP ANALOG CORDLESS TRANSCEIVER
ELECTRICAL CHARACTERISTICS (continued)
Characteristics Symbol Test Conditions Unit
RECEIVER 25°C, Unless otherwise specified) Comparator Threshold Voltage Difference Comparator Output Voltage Comparator Output Voltage Second Mixer Coversion Voltage Gain First Mixer Coversion Voltage Gain Rejection Ratio Detector Output Distortion Detector Output Resistance Detector Output Voltage Change Ratio Meter Drive Slope First Mixer Input Resistance First Mixer Input Capacitance Limitter Input Sensitivity Second Mixer Input Sensitivity First Mixer Order Intercept Current Gain (AMP) 5Vdc (COMP) (COMP) 1KHz, 150mVP-P (37) 180K (54) 1mVrms (50) (48) 1mVrms (45) RFin 1mVrms (DET) (DET) (1M) 50MHz RFin 1mVrms RFin 1mVrms RFin 1mVrms 0.12 V/KHz nA/dB
(COMP)
4.25
(COMP) (2M) (1M)
0.25
(1M) (LIM) (2M)
50MHz 455MHz, 20dB 10.7MHz, 20dB
µVrms µVrms µVrms µVrms
-2.2
KA8510
1CHIP ANALOG CORDLESS TRANSCEIVER
ELECTRICAL CHARACTERISTICS (continued)
Characteristics Symbol Test Conditions Unit
TRANSMITTER (VCC 49.86MHz, 25°C, Unless otherwise specified) Operating Current Modulation Senstitivity Maximum Deviation First bias Voltage First Voltage Variable Capacitance SMOD f(MAX) VBIAS VCAP 1.1V 2.0V Open 49.860MHz Zero Bias Hz/mV mVrms
COMPRESSOR (VCC=3V, f=1MHz, 25°C, Unless otherwise specified) Operating Current Reference Voltage Standard Output Voltage Compressor Gain Difference Compressor Output Distortion Mute Attenuation Ratio Compressor Limitting Voltage VREF VO(COMP) GV1(COMP) GV2(COMP) THDCOMP ATTMUTE VLIM(COMP) VALC signal signal Vinc 13mVrms Vinc -20dB Vinc -40dB Vinc Vinc 0dB, CMUTE Vinc Variable -0.5 -1.0 1.15 1.35 +0.5 +1.0 1.50 mVrms VP-P mVrms
EXPANDER (VCC 1MHz, 25°C, Unless otherwise specified) Standard Output Voltage VO(EXP) GV1(EXP) Expander Gain Difference GV2(EXP) GV3(EXP) Expander Output Distortion Mute Attenuation Ratio Expander Maximum Output Voltage THDEXP ATTMUTE VOEXP(MAX) Vine 180mVrms -10dB -20dB -30dB Vine Variable -0.5 -1.0 -1.5 +0.5 +0.1 +1.5 mVrms mVrms
KA8510
1CHIP ANALOG CORDLESS TRANSCEIVER
ELECTRICAL CHARACTERISTICS (continued)
Characteristic Symbol Test Conditions Unit
(VCC 25°C, Unless otherwise specified) Input Current Input Voltage Output Voltage Counter 0.5V 20µA PDT, 1mA(sourcing) PDT, 1mA(Sinking) 1mA(sourcing) 1mA(Sinking) fin(TX) 42MHz 300mVp-p fin(RX) 42MHz 300mVp-p Fout Fout
Counter
1CHIP ANALOG CORDLESS TRANSCEIVER
22µH 220µF
RECEIVER OUTPUT 470K
FET1 2SK544 10.24MHz
10µF
6.8K EXPANDER INPUT DATA RSSI 2.2µF
10.7MHz 455KHz
EXPANDER OUTPUT
COMP
VCORX
2'nd
Limiting
Carrier Detector
Rectifier
Quard Detector
1'st
FLT1
Meter Driver
Gain Cell
(455 KHz) (10.7MHz)
VREF
Limiter
125K 125K 125K
Input
First
Reference Divider 10.24MHz
Gain Cell
VCOTX
PROG.TX Prescaler PROG.RX Prescaler Rectifier
2.2µF
2.2µF
Modulator
Phase Detector
Phase Detector
Unlock Detector
DECODER
Compandor Mute
KSC1674Y
240K
10µF
4.7n 2.2n
APPLICATION CIRCUIT
1.5K
EMUTE 6.8K 0.47µF 22uH DATA CMUTE
KA8510
1µF/TAN
1µF/TAN
390K 4.7n DATA
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