STV7778S-1 データシートの表示（PDF） - STMicroelectronics
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STV7778S-1 Datasheet PDF : 11 Pages
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STV7778S
VERTICAL SECTION
Operating Conditions
Symbol
Parameter
VSVR Vertical Sync Input Voltage
Test conditions
On Pin 34
Min. Typ. Max. Unit
0
5.5
V
Electrical Characteristics (VCC = 12V, Tamb = 25°C)
Symbol
IBIASP
IBIASN
VSth
VSBI
VRB
VRT
VRTF
IR27
VSW
VSmDut
VSTD
VFRF
ASFR
RATD
RAFD
Rlin
Rload
Vpos
IVPOS
Vor
VOUTDC
V0I
dVS
Ccorr
Parameter
Test conditions
Pin 23-28-29 Bias Current (Current sourced For V23-28-29 = 2V
by PNP base)
Pin 31 Bias Current (Current sunk by NPN For V31 = 6V
base)
Vertical Sync Input Threshold Voltage
Pin 34;
High-level
Low-level
Vertical Sync Input Bias Current
(Current Sourced by PNP Base)
V34 = 0.8V
Voltage at Ramp Bottom Point
On Pin 27
Voltage at Ramp Top Point (with Sync)
On Pin 27
Voltage at Ramp Top Point (without Sync) On Pin 27
Output Current Range on Pin 27 during Ramp V28 = 2V (Note 2),
Charging Time. Current to Charge Capacitor 2V < V27 < 5V
between Pin 27 and Ground
Min current
Max current
Minimum Vertical Sync Pulse Width
Pin 34
Vertical Sync Input Maximum Duty-cycle
Pin 34
Vertical Sawtooth Discharge Time Duration On Pin 27, with 150nF cap
Vertical Free Running Frequency (V28 = 2V) Measured on Pin 27,
Cosc (Pin27) = 150nF
AUTO-SYNC Frequency (see Note 3)
Ramp Amplitude Thermal Drift
With C27 = 150nF ±5%
On Pin 30 (see Note 1),
(0°C < Tamb < 70°C)
Ramp Amplitude Drift Versus Frequency
V31 = 6V, C27 = 150nF,
50Hz < F < 120Hz
Ramp Linearity on Pin 27 ∆I27/I27
Minimum Load on Pin 25 for less than 1%
Vertical Amplitude Drift
V28 = 2V, V25 = X = 4.3V,
2.5V < V27 < 4.5V
Vertical Position Adjustment Voltage on V33 = 2V
Pin 32
V33 = 4V
V33 = 6V
Max Current on Vertical Position Control
Output (Pin 32)
Vertical Output Voltage (on Pin 30)
(Peak to Peak Voltage on Pin 30)
DC Voltage on Vertical Output (Pin30)
V31 = 2V
V31 = 4V
V31 = 6V
See Note 4
Vertical Output Maximum Output Current On Pin 30
Max Vertical S-Correction Amplitude
(V28 = 2V Inhibits S-CORR; V28 = 6V gives
Maximum S-CORR) (see Figure 3)
∆V/V30pp at T/4
∆V/V30pp at 3T/4
C-Correction Adjustment Range Voltage on V29 = 2V
Pin 27 for Maximum Slope on the Ramp V29 = 4V
(with S-Correction) (see Figure 4)
V29 = 6V
Min.
2
100
5
50
50
3.65
3.75
Typ. Max. Unit
2
µA
0.5
µA
V
0.8
V
1
µA
2/8
5/8
VRT-0.1
VREF-V
VREF-V
V
15
20 µA
135
µA
µS
15
%
85
µS
100
Hz
120 Hz
100
ppm/°C
200
ppm/Hz
0.5
%
MΩ
3.2
3.3
V
3.5
V
3.8
V
±2
mA
2
3
4
7/16
±5
-4
+4
2.2
V
V
V
VREF-V
mA
%
%
3
V
3.5
V
4
V
Notes : 1. These parameters are not tested on each unit. They are measured during our internal qualification procedure which includes
characterization on batches comming from corners of our processes and also temperature characterization.
2. When 2V are applied on Pin 28 (Vertical S-Correction control), then the S-Correction is inhibited, consequently the sawtooth have
a linear shape.
3. It is the frequency range for which the VERTICAL OSCILLATOR will automatically synchronize, using a single capacitor value on
Pin 27 and with a constant ramp amplitude.
4. Typically 3.5V for Vertical reference voltage typical value (8V).
8/11
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