NT-QQ11对讲机装配说明 - 图文(2)

KT0803M

收音IC结构图

发射IC结构图

六．电器特性

主控IC参数：

Charcteristics DC supply voltage Input voltage range Operating temperature

Symbol V+ Vin To Ratings < 5.5V - 0.5V to (V+) +0.5v 0℃ ~ +70℃ 7

KT0803M

Storage temperature Tsto -40℃ ~ +90℃ ? 主控IC直流特性 【VDD=3.0V，T=25℃】 Charcteristics Symbol Operating voltage Operating current Standby current Input High Level Input Low Level Output High I Output Sink I LCD Drvie

? 收音IC参数： Charcteristics DC supply voltage Input voltage range Operating temperature Storage temperature

? 收音IC直流特性 【VDD=3.0V，T=25℃】 Limit Charcteristics Symbol Min. Typ. Max. Operating VDD 2.0 3.6 voltage Operating Ia 25.0 current Standby current Ist 100

Limit unit Min. Typ. Max. VDD 2.0 3.6 V Iop Ist Vih 2.0V 400 5 0.8 3.0 uA uA V V uA uA V condition For 2-battery Radio/LCD off VDD=3.0V, LCD On VDD=3.0V VDD=3.0V VDD=3.0V, Voh=2.4V VDD=3.0V, Vol=0.8V Vlcd=3.0V,Io=6.0 uA Vil Ioh -300 Iol 600 VDD 2.8 Symbol V+ Vin To Tsto Ratings < 5.5V - 0.5V to (V+) +0.5v 0℃ ~ +70℃ -40℃ ~ +90℃ unit V mA Ua condition VDD=3.0V VDD=3.0V 8

KT0803M

Iin Vin Vina Vih Vil -10 -0.3 2.0V +10 mA VIO+0.3 V -20 DBm 0.8 V V Input current Input voltage LNA FM Input Level Input High Level Input Low Level

? 收音IC接收特性 【VDD=3.0V，T=25℃】 Charcteristics FM Input Freqency Sensitivity1,2,3 LNA Input Resistance 7 LNA Input Capacitance 7 Input IP3 AM Suppression1,2 Adjacent Channel Selectivity Left and Right Audio Frequency Output Voltage (Pins LOUT and ROUT) Maximum Signal Plus Noise to Noise Ratio1,2,3,5 Stereo Channel Separation Audio Total Harmonic Distortion1,3,6 Audio Output L/R Imbalance Audio Output Loading

Symbol Fin Vrf Rin Cin IP3in αam S200 Limit unit Min. Typ. Max. 65.0 108.0 MHz 1.2 1.5 μV EMF 150 ? 2 4 80 40 45 6 pF dBμV dB dB condition (S+N)/N=26dB AGCD=1 m=0.3 ±200KHz VAFL; VAFR 110 mV Volume =Max (S+N)/N 54 αSCS THD αAOI RL 35 32 60 0.3 0.5 1 dB dB % dB ? Single-ended 9

KT0803M

Resistance

发射IC工作条件： Parameter Symbol Operating Condition Min Typ Max Units 1.8V Analog Supply1 VDD Relative to GND 1.6 1.8 2.0 V IO/Regulator Supply IOVDD Relative to GND 1.6 25 3.6 V Operating Temp TA Ambient Temperature 0 70 °C Note: 1. No external voltage should be applied to this supply. Decoupling cap should be used instead

发射IC规格与性能

IOVDD=1.6~3.6 V, Fin = 1 kHz)

Parameter Symbol FM Frequency Range Current Consumption

Ftx IVDD

Test/Operating Condition Pin 16

Pin 4 with PA (power amp.) at default power mode (PA_bias = 0, RFGAIN[3:0]=1111) Pin 4

Vin = 0.7 Vp-p, Gin = 0 Vin = 0.7 Vp-p, Gin = 0 Vin = 0.7 Vp-p, Gin = 0 Vin = 0.7 Vp-p, Gin = 0 Vin = 0.7 Vp-p, Gin = 0 Single-ended input

Min 76

Nom Max 108

Units

MHz mA

- - - - -0.2 - -

-12 1 0 40 40 120 0.5 20

15 0.1

60 0.3 - 40 - 0.35 0 0.8 - - 150 0.8 -

1

- 0.2 - 60 1.4 12 4 1.8 - - 180 1.2 15k

Standby Current

Signal to Noise Ratio

Total Harmonic Distortion Left/Right Channel Balance

Stereo Separation (Left<->Right) Sub Carrier Rejection Ratio Input Swing1

PGA Range for Audio Input PGA Gain Step for Audio Input Required Input Common-Mode Voltage when DC-coupled Power Supply Rejection2 Ground Bounce Rejection2

Input Resistance (Audio Input) Input Capacitance (Audio Input) Audio Input Frequency Band

Istand SNR THD BAL SEP SCR Vin Gin Gstep Vcm PSRR GSRR Rin Cin Fin

μA dB % dB dB dB VRMS dB dB V dB dB k? pF Hz

Pin 5,7

IOVDD = 1.9 ~ 3.6 V IOVDD = 1.9 ~ 3.6 V Pin 5, 7 Pin 5, 7 Pin 5, 7

10

Transmit Level Channel Step Pilot Deviation Audio Deviation

Frequency Response Pre-emphasis Time Constant Crystal/External Clock 2-wire I2C Clock

High Level Input Voltage Low Level Input Voltage

Vout STEP

96 - 75 30 - - 0 0.75 x - 0.25

Mono,-3dB, ΔF=60kHz, 50/75μs pre-emphasis SIG_PROC<1> = 1 SIG_PROC<0> = 0 Input clock Pin 14

Pin 4, 8, 12, 14, 16 Pin 4, 8, 12, 14, 16

103

50 7.5 113 15 150 15k

dBμV kHz kHz kHz Hz

Tpre CLK SCL VIH VIL

50 75 7.6 100

-

- 400

μs μs MHz kHz

-

-

IOVDD

0.25 x

V

IOVDD

Notes:

1. Maximum is given on the condition of PGA gain = -12dB. 2. Fin = 20 ~ 15k Hz.

发射IC引脚定义

Pin Index

2 3 4

1, 5,11,15 6 7 8 9, 12 10 13 14 16

Name I/O Type Function

XI Analog I/O Crystal input.

XO Analog I/O Crystal input IOVDD Power 1.6~3.3V external logic IOVDD GND Ground Can be shorted together and connectedground to ground INL Analog Input Left channel audio input. INR Analog Input Right channel audio input. SW Digital Input Control bit. Chip enable, supply mode GND Ground Ground RSTB Digital Input Reset (active low). SDA Digital I/O Serial data I/O. SCL Digital I/O Serial clock input. PA_OUT Analog Output FM RF output.

典型应用电路

The KT0803L can be integrated in a wide range of systems by requiring only a single power supply. Figure 9 shows the external diagram for the drop-in replacement of KT0803. 11

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