MC13176 Motorola, MC13176 Datasheet
MC13176
Available stocks
Related parts for MC13176
MC13176 Summary of contents
Page 1
... Low Supply Drain Currents Power Output Adjustable (Up to +10 dBm) Differential Output for Loop Antenna or Balun Transformer Networks Power Down Feature ASK Modulated by Switching Output On and Off (MC13175 ref ; (MC13176 ref Figure 1. Typical Application as 320 MHz AM Transmitter Osc 1 Tank ...
Page 2
... ref ) I mod = 2.0 mA (see Figures 7 and 8) I mod = 0 mA Hold–in Range ( f ref x N) MC13175 (see Figure 7) MC13176 (see Figure 8) Phase Detector Output Error Current MC13175 MC13176 Oscillator Enable Time (see Figure 27) Amplitude Modulation Bandwidth (see Figure 29) Spurious Outputs (I mod = 2 ...
Page 3
... Figures 9 and 10 show the f osc versus I Cont , Figure 5 shows the f osc versus I Cont at – and + 85 C for 320 MHz. The CCO may be FM modulated as shown in Figures 18 and 19, MC13176 320 MHz FM Transmitter. A detailed discussion is found in the Applications Information section. ...
Page 4
... Out mod 15 Out_Gnd 4 MC13175 MC13176 PIN FUNCTION DESCRIPTIONS Crystal Oscillator Inputs The internal reference oscillator is configured as a common emitter Colpitts. It may be operated with either a fundamental or overtone crystal depending on the carrier frequency and the internal prescaler. Crystal oscillator circuits and specifications 8 ...
Page 5
... DOCUMENT CONTAINS SCANNED IMAGES WHICH COULD NOT BE PROCESSED FOR PDF FILES. FOR COMPLETE DOCUMENT WITH IMAGES PLEASE ORDER FROM MFAX OR THE LITERATURE DISTRIBUTION CENTER MOTOROLA RF/IF DEVICE DATA MC13175 MC13176 5 ...
Page 6
... 3.0 Vdc – 2 mod = 2 320 MHz (I Cont = – 3.0 Free–Running Oscillator 85 C – 4 – AMBIENT TEMPERATURE ( C) Figure 8. MC13176 Reference Oscillator Frequency versus Phase Detector Current 10.3 10.2 10 mod = 1 – 0.2 dBm 9.9 9 – 30 – ...
Page 7
... CCO. However, this allows for characterization of the gain constants of these loop components. The gain constants and K n are well defined in the MC13175 and MC13176. Phase Detector (Pin 7) With the loop in lock, the difference frequency output of the phase detector is DC voltage that is a function of the phase difference ...
Page 8
... and the transfer function has a natural frequency 1/2 and a damping factor / 1 Rewriting the above equations and solving for the MC13176 with = 0.707 and n = 5.0 k rad/sec (30) (0. 0.853 (2) (0.707)/( – ...
Page 9
... A Phase Detector 7 Output 30 A MOTOROLA RF/IF DEVICE DATA MC13175 MC13176 measurement of the hold–in range (i.e. f ref 10 – Since sin e cannot exceed 1. approaches 10 –6 = 0.60 k the hold–in range is equal to the DC loop gain where the above example, Extended Hold– ...
Page 10
... Characterization data of the closed loop responses for both the MC13175 and MC13176 at 320 MHz (Figures 7 and 8, respectively) show satisfactory performance using only a simple low–pass loop filter network. The loop filter response is strongly influenced by the high output impedance of the push– ...
Page 11
... Figure 18. 320 MHz MC13176D FM Transmitter Osc Tank Coilcraft 146–04J08 0.146 3.8 to 3.3 Vdc 0.1 0.47 9.1k 15k 1.0k 130k 620 18k 2N4402 100k 33k Data Input (1.6 Vp–p) NOTES coaxial balun, 2 inches long. 2. Pins 5, 10 and 15 are grounds and connnected which is the component’s side ground plane. ...
Page 12
... Series resonant frequency given by 1 1/2 and parallel resonant frequency given by 1/2 12 MC13175 MC13176 Figure 21. Frequency Deviation Figure 23. Unmodulated Carrier Figure 24. Crystal Equivalent Circuit the frequency separation at resonance is given by – – 1/2 ] ...
Page 13
... The reference oscillator can be operated as high as 60 MHz with a third overtone crystal. Therefore possible to use the MC13175 least 480 MHz and the MC13176 up to 950 MHz (based on the maximum capability of the divider network). Enable (Pin 11) The enabling resistor at Pin 11 is calculated by: R eg. enable = V CC – ...
Page 14
... This equates and – 2.3 dBm “On” and – 41 dBm “Off”. In Figure 26, the device’s modulating waveform and encoded carrier are 14 MC13175 MC13176 R mod 3. ...
Page 15
... I mod , MODULATION CURRENT (mA) MOTOROLA RF/IF DEVICE DATA MC13175 MC13176 Analog AM In analog AM applications, the output amplifier’s linearity must be carefully considered. Figure plot of Power Output versus Modulation Current at 320 MHz, 3.0 Vdc. In order to achieve a linear encoding of the modulating sinusoidal waveform on the carrier, the modulating signal must amplitude modulate the carrier in the linear portion of its power output response ...
Page 16
... Where R mod = (V CC – 1.04 Vdc)/0 3.92 k, use a standard value resistor of 3.9 k. Figure 30. Power Output of Unmodulated Carrier Figure 31. Input Signal and AM Modulated Carrier for f mod = 10 kHz 16 MC13175 MC13176 Figure 29. Analog AM Transmitter 3. mod 3.0Vdc Data Input 6 ...
Page 17
... Mfax : RMFAX0@email.sps.mot.com – TOUCHTONE 1–602–244–6609 Motorola Fax Back System – US & Canada ONLY 1–800–774–1848 51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852–26629298 – http://sps.motorola.com/mfax/ HOME PAGE: http://motorola.com/sps/ MOTOROLA RF/IF DEVICE DATA MC13175 MC13176 OUTLINE DIMENSIONS D SUFFIX PLASTIC PACKAGE CASE 751B–05 (SO–16) ISSUE J – ...