TMC22071A Ver la hoja de datos (PDF) - Cadeka Microcircuits LLC.

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TMC22071A

Genlocking Video Digitizer

Cadeka Microcircuits LLC. 

PRODUCT SPECIFICATION

TMC22071A

Pin Definitions (continued)

Pin Number

68 pin 100 pin

Pin Name PLCC MQFP

Analog Interface

VREF

38

70

COMP

48

88

RT,RB

36, 28 68

PLL Filter

DDS OUT 45

82

PFD IN

43

77

CBYP

42

75

Power Supply

VDDA

23, 25,

26, 30,

33, 40,

47

49, 51,

52, 60,

64, 73,

87

VDD

1, 7,18, 6, 18,

22, 52, 26, 42,

58,59,63 44, 48,

92, 98,

100

Ground

AGND

24, 27,

32, 35,

37, 39,

41, 44,

49,

50, 55,

63, 67,

69, 72,

74, 81,

89

DGND

8, 15,

16, 20,

21, 50,

55-57,

65, 68

8, 16,

27, 38,

39, 41,

46, 47,

90, 95-

97

Pin Type

+1.23 V

0.1 mF

0.1 mF

1 mF

+5 V

+5 V

0.0 V

0.0 V

Function

VREF input/output. +1.23 Volt reference. When the internal voltage

reference is used, this pin should be decoupled to AGND with a 0.1

mF capacitor. An external +1.2 Volt reference may be connected

here, overriding the internal reference source.

Compensation capacitor. Compensation for DDS D/A converter

circuitry. This pin should be decoupled to VDDA with a 0.1 mF

capacitor.

A/D VREF decoupling. Decoupling points for A/D converter voltage

references. These pins should be decoupled to AGND with a 0.1 mF

capacitor.

Internal DDS output. Analog output from the internal Direct Digital

Synthesizer D/A converter, at 1/9 the PXCK frequency.

Horizontal PLL input. Analog input to the Phase/Frequency

Detector of the horizontal phase-locked loop.

Comparator bypass. Decoupling point for the internal comparator

reference of the Phase/Frequency Detector. This pin should be

decoupled to AGND with a 0.1 mF capacitor.

Analog power supply. Positive power supply to analog section.

Digital power supply. Positive power supply to digital section.

Analog ground. Ground for analog section.

Digital ground. Ground for digital section.

6

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