- Internal PWM generator for B+ current mode
step-up converter
- Switchable to step-down converter
-I2C adjustable B+ reference voltage
- Output Pulses Synchronized on Horizontal
Frequency
- Internal Maximum Current Limitation
Horizontal
■ Self-adaptative
■ Dual PLL concept
■ 150kHz maximum frequency
■ X-ray protection input
2
■ I
C controls:
Horizontal duty-cycle, H-position
2
C INTERFACE
DESCRIPTION
The TDA9109A is a monolithic integrated circuit
assembled in a 32-pin shrink dual in line plastic
package. This IC controls all the functions related
to the horizontal and vertical deflection in multimode or multi-frequency computer display monitors.
The internal sync processor, combined with the
very powerful geometry correction block, make
the TDA9109A suitable for very high performance
monitors, using very few external components.
The horizontal jitter level is very low. It is particularly well-suited to high-end 15” and 17” monitors.
Combined with the ST7275 Microcontroller family,
TDA9206 (Video preamplifier) and STV942x (OnScreen Display controller), the TDA9109A allows
fully I2C bus-controlled computer display monitors
to be built with a reduced number of external components
4.3Step-up and Step-down Mode Comparison . . ................................. 37
INTERNAL SCHEMATICS39
PACKAGE MECHANICAL DATA46
3/47
3
TDA9109A
PIN CONNECTIONS
H/HVIN
VSYNCIN
HLOCKOUT
PLL2C
C0
R0
PLL1F
HPOSITION
HFOCUSCAP
FOCUS-OUT
HGND
HFLY
HREF
COMP
1
2
3
4
5
6
7
8
9
10
11
12
13
14
32
31
30
29
28
27
26
25
24
23
22
21
20
19
5V
SDA
SCL
V
CC
BOUT
GND
HOUT
XRAY
EWOUT
VOUT
VCAP
VREF
VAGCCAP
VGND
4/47
REGIN
I
SENSE
15
16
18
BREATH
B+GND17
TDA9109A
PIN CONNECTIONS
PinNameFunction
1H/HVINTTL compatible Horizontal sync Input (separate or composite)
2VSYNCINTTL compatible Vertical sync Input (for separated H&V)
3HLOCKOUTFirst PLL Lock/Unlock Output (0 V: Unlocked - 5 V: Locked)
4PLL2CSecond PLL Loop Filter
5C0Horizontal Oscillator Capacitor
6R0Horizontal Oscillator Resistor
7PLL1FFirst PLL Loop Filter
8HPOSITIONHorizontal Position Filter (capacitor to be connected to HGND)
9HFOCUSCAPHorizontal Dynamic Focus Oscillator Capacitor
10FOCUS OUTMixed Horizontal and Vertical Dynamic Focus Output
11HGNDHorizontal Section Ground
12HFLYHorizontal Flyback Input (positive polarity)
13HREFHorizontal Section Reference Voltage (to be filtered)
14COMPB+ Error Amplifier Output for frequency compensation and gain setting
15REGINRegulation Input of B+ control loop
16I
SENSE
17B+GNDGround (related to B+ reference adjustment)
18BREATHDC Breathing Input Control (compensation of vertical amplitude against EHV variation)
19VGNDVertical Section Ground
20VAGCCAPMemory Capacitor for Automatic Gain Control Loop in Vertical Ramp Generator
21V
REF
22VCAPVertical Sawtooth Generator Capacitor
23VOUT
24EWOUTPin Cushion - E/W Correction Parabola Output
25XRAYX-RAY protection input (with internal latch function)
26HOUTHorizontal Drive Output (NPN open collector)
27GNDGeneral Ground (referenced to V
28BOUTB+ PWM Regulator Output
29V
CC
30SCLI
31SDAI
325VSupply Voltage (5V typ.)
Sensing of external B+ switching transistor current,or switch for step-down converter
Vertical Section Reference Voltage (to be filtered)
Vertical Ramp Output (with frequency independant amplitude and S or C Corrections if
any). It is mixed with vertical position voltage and vertical moiré.
)
CC
Supply Voltage(12V typ)
2
C Clock Input
2
C Data Input
5/47
TDA9109A
QUICK REFERENCE DATA
ParameterValueUnit
Horizontal Frequency15 to 150kHz
Autosynch Frequency (for given R0 and C0. Can be easily increased by application)1 to 4.5 f0
± Horizontal Sync Polarity InputYES
Polarity Detection (on both Horizontal and Vertical Sections)YES
TTL Composite SyncYES
Lock/Unlock Identification (on both Horizontal 1st PLL and Vertical Section)YES
2
C Control for H-Position±10%
I
XRAY ProtectionYES
2
C Horizontal Duty Cycle Adjustment30 to 65%
I
2
C Free Running Frequency AdjustmentNO
I
Stand-by FunctionYES
Dual Polarity H-Drive OutputsNO
Supply Voltage MonitoringYES
PLL1 Inhibition PossibilityNO
Blanking OutputsNO
Vertical Frequency35 to 200Hz
Vertical Autosync (for 150nF on Pin 22 and 470nF on Pin 20)50 to 185Hz
Vertical S-Correction (optimized for super flat tube)YES
Vertical C-CorrectionYES
Vertical Amplitude AdjustmentYES
DC Breathing Control on Vertical AmplitudeYES
Vertical Position AdjustmentYES
East/West (E/W) Parabola Output (also known as Pin Cushion Output)YES
E/W Correction Amplitude AdjustmentYES
Keystone AdjustmentYES
Corner Correction with Amplitude AdjustmentYES
Internal Dynamic Horizontal Phase ControlYES
Side Pin Balance Amplitude AdjustmentYES
Parallelogram AdjustmentYES
Tracking of Geometric Corrections with Vertical Amplitude and PositionYES
Reference Voltage (both on Horizontal and Vertical)YES
Dynamic Focus (both Horizontal and Vertical)YES
2
C Horizontal Dynamic Focus Amplitude AdjustmentYES
I
2
C Horizontal Dynamic Focus Symmetry AdjustmentYES
I
2
C Vertical Dynamic Focus Amplitude AdjustmentYES
I
6/47
ParameterValueUnit
Detection of Input Sync (biased from 5V alone)YES
Vertical MoiréYES
Controlled V-Moiré AmplitudeYES
Frequency Generator for Burn-inNO
2
C Read/Write400kHz
Fast I
2
B+ Regulation adjustable by I
CYES
Horizontal Size ControlNO
TDA9109A
7/47
8/47
H/HVIN
SYNCIN
V
HLOCKOUT
SDA
SCL
GND
5V
1
2
3
31
30
27
32
SyncInput
Select
(1bit)
2
I
C Interface
PLL1FPOSITION R0 C0HFLYPLL2CHOUT
786 512426
Phase/Frequency
Comparator
H-Phase(7bits)
Sync
Processor
VCO
Lock/Unlock
Identification
Phase
Comparator
SPinbal
7bits
2
x
Phase
Shifter
H-Duty
(7bits)
Safety
Processor
B+
Controller
x
Paral
7bits
VDFAMP
7bits
2
4
2
x
x
Amp
Symmetry
2x7bits
7 bits7 bits
S andC
Correction
Vertical
Oscillator
RampGenerator
VAMP
7bits
Geometry
Tracking
E/Wpcc
7bits
Keyst.
7 bits
Corner
7bits
x
x
Hout
Buffer
+
5V
Internal
reference
(7bits)
2
x
11
19
17
29
25
28
16
14
15
10
9
24
HGND
VGND
BGND
VCC
XRAY
BOUT
I
SENSE
COMP
REGIN
FOCUS
HFOCUSCAP
EWOUT
BLOCK DIAGRAM
TDA9109A
HREF
VREF
13
21
OUT
VerticalMoire
Cancel
7bits+ON/OFF
VSYNC
TDA9109A
H
ref
V
ref
VPOS
7bits
23182022
BREATHVAGCCAPVCAP
V
TDA9109A
ABSOLUTE MAXIMUM RATINGS
SymbolParameterValueUnit
V
CC
V
DD
V
IN
Supply Voltage (Pin 29)13.5V
Supply Voltage (Pin 32)5.7V
Max Voltage onPin 4
Leakage current into SDA and SCL
with no logic supply
amb
=25°C)
Pin 310.4V
V
=0
DD
Pins 30, 31 = 5 V
20µA
SYNC PROCESSOR
Operating Conditions (VDD= 5V, T
SymbolParameterTest ConditionsMin.Typ.Max.Units
HsVRVoltage on H/HVIN InputPin 105V
MinD
Mduty
VsVRVoltage on VSYNCINPin 205V
VSWMinimum Vertical Sync Pulse WidthPin 25µs
VSmD
VextM
Minimum Horizontal Input Pulses Duration
Maximum Horizontal Input Signal Duty
Cycle
Maximum Vertical Sync Input Duty Cycle
Maximum Vertical Sync Width on TTL
H/Vcomposite
amb
=25°C)
Pin 10.7µs
Pin 125%
Pin 215%
Pin 1750µs
Electrical Characteristics (VDD= 5V, T
SymbolParameterTest ConditionsMin.Typ.Max.Units
VINTH
RIN
VoutT
Note: 2 THis the Horizontal period.
10/47
Horizontal and Vertical Input Logic
Level (Pins 1, 2)
Horizontal and Vertical Pull-Up Resistor
Extracted Vsync Integration Time (%
) on H/V Composite (see2)
of T
H
amb
=25°C)
High Level
Low Level
Pins 1, 2250kΩ
C0 = 820pF2635%
2.2
0.8
V
V
TDA9109A
HORIZONTALSECTION
Operating Conditions
SymbolParameterTest ConditionsMin.Typ.Max.Units
VCO
I
0max
F(max.)Maximum Oscillator Frequency150kHz
OUTPUT SECTION
I12mMaximum Input Peak CurrentPin 125mA
HOI
Max Current from Pin 6Pin 61.5mA
Horizontal Drive Output Maximum
Current
Pin 26, Sunk current30mA
Electrical Characteristics (VDD= 12V, T
amb
=25°C))
SymbolParameterTest ConditionsMin.Typ.Max.Units
SUPPLY AND REFERENCE VOLTAGES
V
V
I
I
V
REF-H
V
REF-V
I
REF-H
I
REF-V
CC
DD
CC
DD
Supply VoltagePin 2910.81213.2V
Supply VoltagePin 324.555.5V
Supply CurrentPin 2950mA
Supply CurrentPin 325mA
Horizontal Reference VoltagePin 13, I = -2mA7.68.28.8V
Vertical Reference VoltagePin 21, I = -2mA7.68.28.8V
Max. Sourced Current on V
Max. Sourced Current on V
REF-H
REF-V
Pin 135mA
Pin 215mA
1st PLL SECTION
HpoIT
Delay Time for detecting polarity
change (see
3
)
VvcoVCO Control Voltage (Pin 7)
VcogVCO Gain (Pin 7)
Hph
Vbmi
Vbtyp
Vbmax
IPII1U
IPII1L
f
o
Horizontal Phase Adjustment
4
)
(see
Horizontal Phase Setting Value (Pin 8)
4
)
(see
Minimum Value
Typical Value
Maximum Value
PLL1 Filter Current Charge
Free Running Frequency
Pin 10.75ms
= 8.2Vf
V
REF-H
fH(Max.)
= 6.49kΩ,
R
0
=820pF
C
0
% of Horizontal
Period
o
1.4
6.4
15.9kHz/V
±10%
Sub-Address 01
Byte x1111111
Byte x1000000
Byte x0000000
PLL1 is Unlocked
PLL1 is Locked
R
= 6.49kΩ,
0
= 820pF
C
0
2.9
3.5
4.2
±140
±1
22.8kHz
Free Running Frequency Thermal Drift
dfo/dT
(No drift on external components)
5
)
(see
CRPLL1 Capture Range
fH(Min.)
fH(Max.) (See Note 6)
-150
f
o
4.5f
+0.5
o
HUnlockDC level pin 3 when PLL1 is locked5V
V
V
V
V
V
µA
mA
ppm/
C
kHz
kHz
11/47
TDA9109A
SymbolParameterTest ConditionsMin.Typ.Max.Units
2nd PLL SECTION AND HORIZONTAL OUTPUT SECTION
FBth
HjitHorizontal Jitter (See
HDmin
HDmax
XRAYth
Vphi2
VSCinh
HDvdHorizontal Drive Output (low level)Pin 26, I
Note: 3 This delay is mandatory to avoid a wrong detection of polarity change in the case of a composite sync.
Note: 4 See Figure 10 for explanation of reference phase.
Note: 5 These parameters are not tested on each unit. They are measured during our internal qualification.
Note: 6 A larger range may be obtained by application.
Note: 7 Hjit = 10
Note: 8 Duty Cycle is the ratio between the output transistor OFF time and the period. The power transistor is
Note: 9 Initial Condition for Safe Operation Start Up.
Flyback Input Threshold Voltage (Pin
12)
7
)At 31.4kHz70ppm
Horizontal Drive Output Duty-Cycle
(Pin 26) (see
8
)
Sub-Address 00
Byte x1111111
Byte x0000000 (see
X-RAY Protection Input Threshold
Voltage,
Internal Clamping Levels on 2nd PLL
Loop Filter (Pin 4)
Pin 25, see Figure 147.68.28.8V
Low Level
High Level
Threshold Voltage to Stop H-Out, VOut, B-Out and Reset XRAY when V
Pin 297.5V
CC
< VSCinh(see Figure14)
6
x (Standard deviation/Horizontal period)
controlled OFF when the output transistor is OFF.
0.650.75V
9
)
30
65
1.6
4.2
= 30mA0.4V
OUT
%
%
V
V
12/47
TDA9109A
VERTICAL SECTION
Operating Conditions
SymbolParameterTest ConditionsMin.Typ.Max.Units
OUTPUTS SECTION
R
LOAD
Minimum Load for less than 1% Vertical Amplitude Drift
Pin 2065MΩ
Electrical Characteristics (VCC= 12V, T
amb
=25°C)
SymbolParameterTest ConditionsMin.Typ.Max.Units
VERTICAL RAMP SECTION
VRBVoltage at Ramp Bottom PointPin 222.1V
VRTVoltage atRamp Top Point (with Sync)Pin 225.1V
VRTF
Voltage at Ramp Top Point (without
Sync)
Pin 22
VSTDVertical Sawtooth Discharge TimePin 22, C
VFRF
Vertical Free Running Frequency
11
)
(See
ASFRAUTO-SYNC Frequency (See
Ramp Amplitude Drift Versus
RAFD
Frequency at Maximum Vertical
Amplitude (see
10
)
RlinRamp Linearity on Pin 22 (See
12
)C
11
)2.5V < V27< 4.5V0.5%
C
= 150nF100Hz
22
= 150nF ±5%50185Hz
22
C
= 150nF
22
50Hz< f < 185Hz
= 150nF70µs
22
VRT-
0.1
200
Sub Address 06
VPOS
Vertical Position Adjustment Voltage
(Pin 23 - VOUT mean value)
Byte 00000000
Byte 01000000
Byte 01111111
3.2
3.6
4.0
Sub Address 05
VOR
VOI
dVS
Vertical Output Voltage
(peak-to-peak on Pin 23)
Vertical Output Maximum Current
(Pin 23)
Max Vertical S-Correction Amplitude
13
)
(See
0xxxxxxx inhibits S-CORR
11111111 gives max S-CORR
Note: 10 These parameters are not tested on each unit. They are measured during our internal qualification procedure.
Note: 11 With Register 07 at Byte 0xxxxxxx (S correction is inhibited) and Register 08 at Byte 0xxxxxxx (C correction
is inhibited), the vertical sawtooth has a linear shape.
Note: 12 This is the frequency range for which the vertical oscillator will automatically synchronize, using a single
capacitor value on Pin22 and Pin 20, and with a constant ramp amplitude.
Note: 13 TV is the vertical period.
Note: 14 When not used, the DC breathing control pin must be connected to 12V.
V
18
V
18>VREF-V
1V<V18< V
REF-V
112V
0
-2.5
%/V
%/V
14/47
DYNAMIC FOCUS SECTION
TDA9109A
Electrical Characteristics (VCC= 12V, T
amb
=25°C)
SymbolParameterTest ConditionsMin.Typ.Max.Units
HORIZONTAL DYNAMIC FOCUS FUNCTION
Horizontal Dynamic Focus Sawtooth
HDFst
Minimum Level
Maximum Level
HDFdis
HDFstart
Horizontal Dynamic Focus Sawtooth
Discharge Width
Internal Fixed Phase Advance versus
HFLY middle
HDFDCBottom DC OutputLevelR
TDFHD
DC Output Voltage Thermal Drift
15
)
(see
Horizontal Dynamic Focus Amplitude
HDFamp
Min Bytexxx11111
Typ Bytexxx10000
Max Bytexxx00000
Horizontal Dynamic Focus Position
HDFKeyst
Advance for Bytexxx11111
Delay for Bytexxx00000
Pin 9, capacitor on
HFOCUSCAP and
C0 = 820pF, T
=
H
20µs
2.2
4.9
Start by HDFstart400ns
Independent of
frequency
=10kΩ, Pin 102.1V
LOAD
1µs
200
Sub-Address 03,
Pin 10, fH = 50kHz,
Symmetric Wave
Form
1
1.5
3.5
Sub-address 04
For time reference
see Figure 15
16
16
VERTICAL DYNAMIC FOCUS FUNCTION (positive parabola)
Vertical Dynamic Focus Parabola
Sub-Address 0F
(added to horizontal) Amplitude with
AMPVDF
VDFAMP
VAMP and VPOS Typical
Min. Byte xx000000
Typ. Byte xx100000
Max. Byte xx111111
Parabola Amplitude Function of VAMP
(tracking between VAMP and VDF)
with VPOS Typ. (see Figure 1 and
16
Parabola Asymmetry Function of
Sub-Address 05
Byte x0000000
Byte x1000000
)
Byte x1111111
Sub-Address 06
0
0.5
1
0.6
1
1.5
VPOS Control (tracking between
VHDFKeyt
VPOS and VDF) with VAMP Max.
A/B Ratio
B/A Ratio
Byte x0000000
Byte x1111111
0.52
0.52
V
V
ppm/
C
V
PP
V
PP
V
PP
%
%
V
PP
V
PP
V
PP
V
PP
V
PP
V
PP
Note: 15 These parameters are not tested on each unit. They are measured during our internal qualification.
Note: 16 S and C correction are inhibited so the vertical output sawtooth has a linear shape.
15/47
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