TEA2037AD [STMICROELECTRONICS]

IC,VERTICAL/HORIZONTAL DEFLECTION PROCESSOR,BIPOLAR,SOP,16PIN,PLASTIC;


型号：	TEA2037AD
厂家：	ST
描述：	IC,VERTICAL/HORIZONTAL DEFLECTION PROCESSOR,BIPOLAR,SOP,16PIN,PLASTIC 监视器
文件：	总9页 (文件大小：96K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

TEA2037A

HORIZONTAL AND VERTICAL DEFLECTION MONITOR

DIRECT LINE DARLINGTON DRIVE

DIRECT FRAME-YOKE DRIVE (± 1A)

COMPOSITE VIDEO SIGNAL INPUT CAPA-

BILITY

FRAME OUTPUT PROTECTION AGAINST

SHORT CIRCUITS

PLL

HORIZONTAL OSCILLATOR FREQUENCY

RANGE FROM 15kHz TO 100kHz

VERTICAL

OSCILLATOR

FREQUENCY

RANGE FROM 30Hz TO 120Hz

VERY FEW EXTERNAL COMPONENT

VERY LOW COST POWER PACKAGE

POWERDIP (8+8)

(Plastic Package)

ORDER CODE : TEA2037A

DESCRIPTION

The TEA2037Ais an horizontal and vertical deflec-

tion circuit. It uses the same concept as TEA2117

but optimisedfor small screens, for a very low cost

solution.

PIN CONNECTIONS

FRAME OSCILLATOR

FLYBACK GENERATOR SUPPLY

FRAME FLYBACK

V_CC1

VIDEO INPUT

LINE OUTPUT

GROUND

INVERTING INPUT

FRAME POWER SUPPLY

FRAME OUTPUT

LINE FLYBACK

PHASE DETECTOR

LINE OSCILLATOR

1/9

September 1996

TEA2037A

BLOCK DIAGRAM

FRAME

OSCILLATOR

FLYBACK

GENERATOR

POWER

STAGE

FRAME

FRAME-SYNC.

OSCILLATOR

Yoke

SEPARATOR

INPUT

STAGE

PHASE

DETECTOR

LINE

OSCILLATOR

OUTPUT

STAGE

TEA2037A

V_CC1

ABSOLUTE MAXIMUM RATINGS

Symbol

Parameter

Value

Unit

V_CC1

V₂

Supply Voltage

Flybcak Generator Supply Voltage

Frame Power Supply Voltage

Frame Output Current (non repetitive)

Frame Output Current (continuous)

Line Output Voltage (external)

Line Output Peak Current

V₇

I_8nr

I₈

± 1.5

± 1

V₁₄

I_p14

I_C14

T_stg

T_j

0.8

Line Output Continuous Current

Storage Temperature

0.4

-40, +150

+150

^oC

Max. Operating Junction Temperature

THERMAL DATA

Symbol

Parameter

Junction-case Thermal Resistance

Value

Unit

^oC/W

R_{th (j-c)}

R_{th (j-a)}

Max.

Typ.

Junction-ambient Thermal Resistance

(soldered on a 35µm thick 45cm²PC board copper area)

T_j

Recommended Junction Temperature

Max.

120

^oC

ELECTRICAL CHARACTERISTICS (T_amb= 25^oC)

Symbol

Parameter

Min.

Typ.

Max.

Unit

SUPPLY (shunt regulator) (Pin 16)

I_CC1

Supply Current

V_CC1

∆V_CC1

Supply Voltage (I_CC1= 15mA)

Voltage Variation (I_CC1: 10mA to 20mA)

-280

9.8

10.5

+280

LPS

Starting Threshold for Line Output Pulses

2/9

TEA2037A

ELECTRICAL CHARACTERISTICS (T_amb= 25^oC) (continued)

Symbol

Parameter

Min.

Typ.

Max.

Unit

VIDEO INPUT (Pin 15)

V₁₅

MWF

V_IN

Reference Voltage (I₁₅= -1µA)

1.4

1.75

0.3

Minimum Width of Frame Pulse (when synchronized with TTL Signal)

µs

Sync Bottom to Black Level (R_{SYNC 15}= 560kΩ)

0.2

V_PP

LINE OSCILLATOR (Pin 9)

LT9

HT9

BI9

Low Threshold Voltage

2.8

5.4

3.2

6.6

100

1.4

3.6

7.8

High Threshold Voltage

Bias Current

kΩ

µs

DR9

FLP1

Discharge Impedance

1.0

1.8

Free Running Line Period

(R = 34.9kΩ Tied to V_CC1, C = 2.2nF Tied to Ground)

FLP2

OT9

∆F

Free Running Line Period (R = 13.7kΩ, C = 2.2nF)

µs

Oscillator Threshold for Line Output Pulse Triggering

4.6

Horizontal Frequency Drift with Temperature (see application Fig. 8)

Hz/^oC

∆θ

LINE OUTPUT (Pin 14)

LV14

OPW

Saturation Voltage (I₁₄= 200mA)

Output Pulse Width (line period = 64µs)

1.1

1.6

µs

LINE FLYBACK INPUT (Pin 11)

V₁₁

Bias Voltage

1.8

4.5

2.4

5.8

3.2

Z11

Input Impedance

kΩ

PHASE DETECTOR

I₁₀

Output Current during Synchro Pulse

250

0.95

-2

450

800

1.05

µA

RI10

LI10

CV10

Current Ratio (positive/negative)

Leakage Current

µA

Control Range Voltage

2.60

7.10

FRAME OSCILLATOR (PIn 1)

LT1

HT1

BI1

Low Threshold Voltage

High Threshold Voltage

Bias Current

1.6

2.6

2.0

3.1

2.3

3.6

kΩ

DR1

FFP1

Discharge Impedance

300

470

700

Free Running Line Period

(R = 845kΩ Tied to V_CC1, C = 180nF Tied to Ground)

20.5

MFP

FFP2

FPR

Minimum Frame Period (I₁₅= -100µA) (with the same RC)

Free Running Line Period (R = 408kΩ, C = 220nF)

Frame Period Ratio =

12.8

14.3

1.8

1.7

1.9

Frame Saw-tooth Gain between Pin 1 and non-inverting Input of the

Frame Amplifier

-0.4

∆F

∆θ

Vertical Frequency Drift with Temperature (see application Fig. 8)

10^-3

Hz/^oC

FRAME POWER SUPPLY (Pin 7)

V₇

I₇

Operating Voltage (with flyback generator)

Supply Current (V₇= 30V)

FLYBACK GENERATOR SUPPLY (PIn 2)

V₂Operating Voltage

3/9

TEA2037A

ELECTRICAL CHARACTERISTICS (T_amb= 25^oC) (continued)

Symbol

Parameter

Min.

Typ.

Max.

Unit

FRAME OUTPUT (PIn 8)

Saturation Voltage to Ground (V₇= 30V)

I₈= 0.1

I₈= 1A

LV8A

LV8B

0.0.6

0.37

0.6

Saturation Voltage to V₇(V₇= 30V)

I₈= -0.1

I₈= -1A

HV8A

HV8B

1.3

1.7

1.6

2.4

Saturation Voltage to V7 in Flyback Mode (V₈> V₇)

I₈= 0.1

I₈= 1A

FV8A

FV8B

1.6

2.5

2.1

4.5

FLYBACK GENERATOR (Pins 2 and 3)

Flyback Transistor on (output = high state) (V₂= 30V)

F2DA

F2DB

FSVA

FSVB

V3/2 with I_{3 → 2}= 0.1A

1.5

3.0

0.8

2.2

2.1

4.5

1.1

4.5

I_{3 → 2}= 1A

V2/3 with I_{3 → 2}= 0.1

I_{3 → 2}= 1A

Flyback Transistor off (output = V₇- 8V) (V₇= V₂= 30V)

Leakage Current Pin 2

FCI

170

µA

The TEA2037A performs all the video and power

functions required to provide signals for the direct

drive of the line darlington and frame yoke.

The slice level of sync-separation is fixed by value

of the external resistors R₁and R₂. V_Ris an inter-

nally fixed voltage.

It contains:

- A shunt regulator

- A synchronization separator

- An integrated frame separator without external

components

- A saw-tooth generator for the frame

- A power amplifier for direct drive of frame yoke

(short circuit protected)

The sync-pulse allows the discharge of the capaci-

tor by a 2 x 1 current. Aline sync-pulse is not able

to discharge the capacitorunderV_Z/2. Aframe sync

pulse permits the complete discharge of the ca-

pacitor, so during the frame sync-pulseQ3 and Q4

provide current for the other parts of the circuit.

Figure 2 : Frame Separator

- An open collector output for the line darlingtondrive

- A line phasedetectoranda voltagecontrol oscillator

V_Z

Figure 1 : SynchronizationSeparator Circuit

ST1

V_Z/2

ST2

SL1 SL2

V_R

SL1

Video

The oscillator thresholds are internally fixed by

resistors. The discharge of the capacitor depends

on the internal resistor R4. The control voltage is

applied on resistor R5.

4/9

TEA2037A

Figure 3 : Line Oscillator

V_CC1

Phase

Comparator

Output

Figure 4 : Phase Comparator

current for the other part. When theline flyback and

the video signal are synchronized, the output of the

comparatorisan alternativelynegativeand positive

current. The frame sync-pulse inhibits the compa-

rator to prevent frequency drift of the line oscillator

on the frame beginning.

Line

Flyback

Figure 5

V_CC1

Integrated

Flyback

V_C

Sync Pulse

Output

V_C

Current

ST2

The sync-pulse drives the current in the compara-

tor. The line flyback integrated by the external

network gives on pin 11 a saw tooth, the DC offset

of this saw tooth is fixed by VC. The comparator

output provides a positive current for the part of the

signal on pin 11 greater than to VC and a negative

ST1

5/9

TEA2037A

Line Output (pin 14)

last half free run period. The input current during

the charge of the capacitor is less than 100nA.

It is an open collector output which is able to drive

pulse current of 800mA for a rapid discharging of

the darlington base. The output pulse time is 22µs

for a 64µs period.

Frame Output Amplifier

This amplifier is able to drive directly the frame

yoke. Its output is short circuit and overload pro-

tected ; it contains also a thermal protection.

The oscillator thresholds are internally fixed by

resistors. The oscillator is synchronized during the

Figure 6 : Frame Oscillator

V_CC1

INPUT CURRENT

COMPENSATION

Frame

Sync Pulse

To Frame

Amplifier

6/9

TEA2037A

TYPICAL APPLICATION FOR DISPLAY UNITS

Figure 7 : Application without flyback generator and with sync-pulse drive ; yoke : 72mH, 40Ω

1kΩ

V_CC1

V_CC

28V

100µF

180nF

100nF

12 13

10kΩ

TEA2037A

15k

22nF

470k

Ω

47nF

220nF

470µF

100kΩ

V_CC

56kΩ

2.2nF

470Ω

1/2W

2.2µF

1µF

V_CC1

47Ω 1N4148

Figure 8 : Applicationwith flyback generator and video ; yoke : 72mH, 40Ω

1kΩ

V_CC1

V_CC

28V

1N4003

100µF

47µF

180nF

1N4148

100nF 1.5kΩ

100nF

12 13

Video

TEA2037A

15kΩ

22nF

470kΩ

47nF

220nF

470µF

100kΩ

680pF

V_CC

56kΩ

2.2nF

470Ω

1/2W

2.2µF

1µF

V_CC1

47Ω 1N4148

7/9

TEA2037A

TYPICAL APPLICATION FOR HIGH FREQUENCY MONITOR

CHARACTERISTICS

• Screen : 14’’ Colour

• Capture range : ± 5µs

(@ sync pulse = 4.7µs)

• Frame deflection yoke : 11mH, 7Ω,

750mA peak–to–peak

• Input signal : negative TTL sync (line + frame)

• V_CC= + 14V with flyback generator

• Frame flyback time : 0.6ms

• Vertical frequency : 72Hz

• Vertical free–running period : 16ms

(adjustable)

• Dissipated power : 1.4W

(heatsink required)

• Adjustments :

• Vertical amplitude

• Vertical Linearity

• Vertical frequency

• Horizontal frequency

• Horizontal frequency : 35kHz

(adjustable)

• Line flyback time : 5.5µs

2.2kΩ

270kΩ

V_CC1

1000µF

V_CC

14V

1N4002

100µF

100nF

47µF

150nF

1N4148

12 13

10kΩ

Sync

Frame Yoke

TEA2037A

11mH/7Ω

15kΩ

22nF

39kΩ

47kΩ

Line

Flyback

68kΩ

47nF

330nF

18kΩ

2200µF

47kΩ

680pF

V_CC

6.8nF

1nF

220Ω

1/2W

2.2µF

1µF

Line

Darlington

Ω

1N4148

V_CC1

8/9

TEA2037A

PACKAGE MECHANICAL DATA

16 PINS - PLASTIC POWERDIP

Millimeters

Inches

Typ.

Dimensions

Min.

0.51

0.85

Typ.

Max.

Min.

0.020

0.033

Max.

1.40

0.055

0.50

0.020

0.38

0.50

20.0

0.015

0.020

0.787

8.80

2.54

0.346

0.100

0.700

17.78

7.10

5.10

0.280

0.201

3.30

0.130

1.27

0.050

Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility

for the consequences of use of suchinformation nor for any infringement of patents or other rights of third parties which may result

from its use. No licence is granted by implication or otherwiseunder anypatent or patent rights of SGS-THOMSON Microelectronics.

Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all

information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life

support devices or systems without express written approval of SGS-THOMSON Microelectronics.

Purchase of I²C Components of SGS-THOMSON Microelectronics, conveys a license under the Philips

I²C Patent. Rights to use these components in a I²C system, is granted provided that the system conforms to

the I²C Standard Specifications as defined by Philips.

SGS-THOMSON Microelectronics GROUP OF COMPANIES

Australia - Brazil - Canada - China - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco

The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A.

9/9

TEA2037AD [STMICROELECTRONICS]

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