MC13081X Просмотр технического описания (PDF) - Motorola => Freescale

Номер в каталоге

Компоненты Описание

производитель

MC13081X

Multimode Color Monitor Horizontal, Vertical, and Video Combination Processor

Motorola => Freescale 

Pin

Name

9

5.0 V

Regulator

Output

10

Phase

Detector 1

Filter

11

Automatic

Frequency

Control

12

Horizontal

Frequency

Range

MC13081X

PIN FUNCTION DESCRIPTION (continued)

Equivalent Internal Circuit

Description

9

5.0 V

10 µF

VCC

Band Gap

Regulator

R

0.8 R

5.0 V (±5%) regulator. Minimum 10 µF capacitor is

required for noise filtering and compensation. Up to

20 mA can be supplied to external circuitry. It can

source but not sink current. Output impedance is

≈ 10 Ω.

This 5.0 V regulator is recommended for use as a

reference only.

Phase

Detector #1

Sync

Horiz

OSC

400 µA

10

400 µA

External components at this pin will determine the

PLL gain and phase characteristics. The capacitors

C10A

should be non–polarized.

5.0 V The voltage at this pin nominally ranges from 1.5 V to

5.0 V with corresponding horizontal frequency from

R10 C10B

25 kHz to 68 kHz.

From

Pin 10

64x

Oscillator

5.0 V

Pin 11 is a buffered equivalent of Pin 10, and ranges

11

VCC from a minimum of 1.5 V at horizontal high frequency

R11A

to near 5.0 V at low frequency. Pin 11 can sink a

maximum of 1.0 mA, but cannot source current.

R11B

12

R11C

The current out of Pin 12 determines the horizontal

frequency by a current transfer constant of

≈ 122 Hz/µA.

Pin 12 is internally maintained at 5.0 V.

13

Timebase

Ground

14, 16 FH Switch A, B

14

16

15, 17

FH Switch A, B

Threshold

Setting

VCC

I12

2

1.0 k

15,17

R15

3.0 k

(R17)

5.0 V

18

Contrast

Control

19

Brightness

Control

5.0 V

R18

(R19)

18,19

VCC

50 k

Ground for the timebase section. Connect to a clean,

low impedance ground.

Pin 14 (Switch A), and Pin 16 (Switch B) are open

collector NPN switches to ground. Each switch is

“on” when the horizontal frequency is higher than the

set points set by resistors at Pins 15 and 17,

respectively.

Maximum voltage is 8.0 V, and maximum sink

current is 20 mA.

Pin 15 and Pin 17 are current mirror at 1/2 of Pin 12

current. External resistors at these pins set the

horizontal frequency at which Pins 14 and 16 will

switch, respectively. The threshold voltage is 5.0 V.

To Output

Switches

The input control range is from 0 to 5.0 V. An increase

of voltage increases contrast.

The input control range is from 0 to 5.0 V. An increase

of voltage increases brightness.

MOTOROLA ANALOG IC DEVICE DATA

7

Share Link: