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NTE7134

Integrated Circuit Horizontal and Vertical Deflection Controller for Monitors

NTE Electronics 

Electrical Characteristics (Cont’d): (VP = 12V, TA = +25°C unless otherwise specified)

Parameter

Symbol

Test Conditions

Min Typ Max Unit

Horizontal Sync Separator (Cont’d)

Input Characteristics for AC–Coupled Video Signals (Sync–on–Video, Negative Sync Polarity)

Sync Amplitude of Video Input Signal

Voltage

VAC(HSYNC)

– 300 – mV

Slicing Voltage Level

(Measured from Top Sync)

RS = 50Ω

90 120 150 mV

Top Sync Clamping Level

Vclamp(HSYNC)

Charge Current for Coupling Capacitor

IC(HSYNC)

Minimum Width of Sync Pulse

tHSYNC(min)

Maximum Source Resistance

RS(max)

Differential Input Resistance

rdiff(HSYNC)

Automatic Polarity Correction for Horizontal Sync

VHSYNC > Vclamp(HSYNC)

Duty factor = 7%

During Sync

1.1 1.28 1.5 V

1.7 2.4 3.4 µA

0.7 –

–

µs

–

– 1500 Ω

– 80 –

Ω

Horizontal Sync Pulse Width Related to tH

Delay Time for Changing Polarity

Vertical Sync Integrator

tp(H)

fH < 45kHz

tH

fH > 45kHz

tp(H)

–

– 20 %

–

– 25

&

0.3 – 1.8 ms

Integration Time for Generation of a

Vertical Trigger Pulse

tint(V)

fH = 31.45kHz,

IHREF = 1.052mA

fH = 64kHz,

IHREF = 2.141mA

fH = 100kHz,

IHREF = 3.345mA

Vertical Sync Slicer (DC–Coupled, TTL Compatible) [VSYNC (Pin14)]

7.0 10.0 13.0 µs

3.9 5.7 6.5 µs

2.5 3.8 4.5 µs

Sync Input Signal Voltage

Slicing Voltage Level

VVSYNC

1.7 –

–

V

1.2 1.4 1.6 V

Input Current

IVSYNC

0V < VSYNC < 5.5V

Vertical Sync Output at VSYNC (Pin14) During Composite Sync at HSYNC (Pin15)

–

– ±10 µA

Output Current

Internal Clamping Voltage Level

Steepness of Slopes

IVSYNC

VVSYNC

During Internal Vertical Sync –0.7 –1.0 –1.35 mA

During Internal Vertical Sync 4.4 4.8 5.2 V

– 300 – ns/mA

Automatic Polarity Correction for Vertical Sync

Maximum Width of Vertical Sync Pulse

tVSYNC(max)

Delay for Change Polarity

td(VPOL)

Video Clamping/Vertical Blanking Output [CLCB (Pin16)]

–

– 300 µs

0.3 – 1.8 ms

Width of Video Clamping Pulse

Temperature Coefficient of Vclamp(CLCB)

Steepness of Slopes for Clamping Pulse

Top Voltage Level of Vertical

Blanking Pulse

tclamp(CLBL)

TCclamp

Vblank(CLBL)

Measured at VCLBL = 3V

RL = 1MΩ, CL = 20pF

Note 2

0.6 0.7 0.8 µs

– +4 – mV/K

– 50 – ns/V

1.7 1.9 2.1 V

Width of Vertical Blanking Pulse

tblank(CLBL)

240 300 360 µs

Note 2. Continuous blanking at CLCB (Pin16) will be activated, if one of the following conditions is true:

a) No horizontal flyback pulse at HFLB (Pin1) within a line

b) X–ray protection is triggered

c) Voltage at HPLL2 (Pin31) is low (for soft start of horizontal drive)

d) Supply voltage at VVV (Pin9) is low

e) PLL1 unlocked while frequency–locked loop is in search mode

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