MC3374 Motorola, MC3374 Datasheet
MC3374
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MC3374 Summary of contents
Page 1
... MHz which require extremely low power consumption. Battery powered applications down 1.1 V are possible. The MC3374 also includes an on–board voltage regulator, low battery detection circuitry, a receiver enable allowing a power down Sleep–Mode , two undedicated buffer amplifiers to allow simultaneous audio and data reception, and a comparator for enhancing FSK (Frequency Shift Keyed) data reception to 1200 baud ...
Page 2
... Ambient Temperature ELECTRICAL CHARACTERISTICS ( 1 10.7 MHz, f mod = 1.0 kHz, Deviation = 3.0 kHz Test Circuit of Figure 1, unless otherwise noted.) Characteristic OVERALL MC3374 PERFORMANCE Drain Current – Pin (Enabled) Drain Current – Pin Vdc (Disabled) Recovered Audio (RF Input = 10 V) Noise Output (RF Input = 0 mV, 300 Hz – 5.0 kHz) Input for – ...
Page 3
... The evaluation board layout shown provides for use of either resonator. Ceramic discriminator elements cannot be used with the MC3374 due to their low input impedance. The damping resistor value can be raised to increase the recovered audio or lowered to increase the quadrature detector’s bandwidth and linearity – ...
Page 4
... Figure 4. V REG versus Supply 1200 1000 800 600 400 990 200 330 0 0 1.0 2.0 3 (V) 4.01 3.99 3.97 3.95 3.93 3.91 – MC3374 120 1.0 nF Open 30 pF 5.0 pF 1.0 nF Open 18 pF 3.0 pF 470 pF Figure 3. S+N, N versus Input – 10 – 20 – ...
Page 5
... Figure 7. MC3374 Pager Receiver PCB Artwork COPPER 1 LAYER (Actual View of Surface Mount Side) RF Input V EE MC3374FTB Enable Data Output Disable 2.0 COMPONENT 1 LAYER V CC GND 3900 P 1 0.1 1.0 10 0.1 4 100 K NOTE Through Hole MOTOROLA ANALOG IC DEVICE DATA MC3374 (Caution: Reversed View of Through– ...
Page 6
... The regulator is a 1.07 V reference capable of sourcing 3.0 mA. This pin (Pin 17) needs to be decoupled using a 1.0 – capacitor to maintain stability of the MC3374. All three the MC3374 ( CC2 , V CC3 ) run on the same supply voltage typically decoupled using capacitors only. V CC2 and V CC3 should be bypassed using the RC bypasses shown in Figure 1 ...
Page 7
... Motorola was negligent regarding the design or manufacture of the part. Motorola and Opportunity/Affirmative Action Employer. MOTOROLA ANALOG IC DEVICE DATA MC3374 Audio Buffer Design The audio buffer is designed as follows 3000 ...
Page 8
... K 0.33 0.57 0.013 0.022 5.6 REF 0.220 REF 0.119 0.135 0.005 0.005 P 0.40 BSC 0.016 BSC 0.15 0.25 0.006 0.010 S 8.85 9.15 0.348 0.360 T 0.15 0.25 0.006 0.010 8.85 9.15 0.348 0.360 1.0 REF 0.039 REF X *MC3374/D* MOTOROLA ANALOG IC DEVICE DATA MC3374/D ...