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MC1377

RFQ for MC1377

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mc1377

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Technical/Catalog Information	MC13770FCR2
Vendor	Freescale Semiconductor (VA)
Category	RF and RFID
Package / Case	12-QFN
Voltage - Supply	2.75V
Current - Supply	8mA
Gain	15dB
Frequency	2.1GHz ~ 2.4GHz
RF Type	W-CDMA
Packaging	Cut Tape (CT)
Noise Figure	-
P1db	0dBm (IP3)
Test Frequency	2.14GHz
Lead Free Status	Contains Lead
RoHS Status	RoHS Non-Compliant
Other Names	MC13770FCR2 MC13770FCR2 MC13770FCCT ND MC13770FCCTND MC13770FCCT

Product	Manufacturers	Pack	D/C
MC1377	-	-	01+

The incoming RGB inputs are terminated with resistors R1, R2, and R3 and potentiometers RV1, RV2, and RV3. These provide input impedances of approximately 750. The presets should be adjusted to provide a maximum input of 1 V pk-pk into the MC1377. The inputs are ac-coupled into the encoder; the large value capacitor is required for the 60 Hz field component.

The Colpitts oscillator for the color burst is formed around pins 17 and 18. About 0.5 V pk-pk should appear on pin 17 and 0.25 V rms into pin 18 with the oscillator components removed. The incoming composite sync signal at pin 2 should be negative-going. The device will accept CMOS and TTL directly. If it is necessary to ac-couple the sync, then a pull-up to 8.2 V is required-a regulated 8.2 V is provided on pin 16.

From the composite sync input, the MC1377 generates a ramp which it uses to provide the burst gate pulse. The slope of this ramp can be varied by a potentiometer on pin 1. However, a preset value, shown as 43 KΩ, is usually sufficient. The chrominance filter should be fitted between pins 13 and 10. If the filter is not used, a compensatory potential divider should be fitted (both are shown). We used a prealigned Toko bandpass filter centered on 4.43 MHz. If the chroma filter is fitted, the delay through it, 400 ns, has to be compensated for by a luminance delay line between pins 6 and 8. This line is shorted out if the filter is not fitted. The composite video output from the IC is buffered to provide a low-impedance drive for a monitor, or it can be applied directly to a UHF modulator commonly used in computers.

The MC1377 will generate a composite video from baseband red, green, blue, and sync inputs. On board features include: a color subcarrier oscillator; voltage controlled 90° phase shifter; two double sideband suppressed carrier (DSBSC) chroma modulators; and RGB input matrices with blanking level clamps. Such features permit system design with few external components and accordingly, system performance comparable to studio equipment with external components common in receiver systems.

Rating	Symbol	Value	Unit
Supply Voltage	V_CC	15	Vdc
Storage Temperature	T_stg	65 to +150	°C
Power Dissipation Package Derate above 25°C	P_D	1.25 10	W mW/°C
Operating Temperature	T_A	0 to +70	°C

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	Part Number	Mfg	Pack	D/C	Qty	Note

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