View CVA2417_56061.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

Improved Triple 85MHz CRT Driver
CORPORATION
Not recommended for new design. See CVA2400A.
CVA2417TX
FEATURES DESCRIPTION The CVA2417TX is an improved version that features excellent gray scale linearity with no crossover distortion and less EMI. Designed especially to drive high resolution monitor for resolution up to 1280 x 1024 (non-interlaced) with pixel frequency up to 160MHz. The part is housed in the industry standard 11-lead TO-220 molded power package. The heat sink is floating and may be grounded for ease of manufacturing and RFI shielding. ORDERING INFORMATION Part CVA2417TX Package T11A Temperature -20oC to +100oC
* Bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85MHz * Fall Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.8ns * RiseTime.. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. . 504.4ns VP-P * Swing . . * Excellent Gray Scale Linearity Voltage . . . . . . . . . . . . . . . . * SupplyPin Compatible. .with .CVA2415T. . . . . . . . . . . . 80V * Pin to * CRT Driver for 1280 x 1024 and 1024 x 768 Color
Monitors
APPLICATIONS
CONNECTION DIAGRAM AND SIMPLIFIED SCHEMATIC
V+
11 10 9 8 7 6 5 4 3 2 1 V+ VOUT 3 BIAS 3 (12V) VIN 3 BIAS 2 (12V) VIN 2 GND VOUT 2 VOUT 1 BIAS 1 (12V) VIN 1
11
VOUT 3,4,10
VBIAS 2,7,9 VIN 1,6,8
PIN 1 DESIGNATOR T11A
1H-32
CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025
CVA2417TX
CORPORATION
ABSOLUTE MAXIMUM RATINGS Supply Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90V Storage Temperature . . . . . . . . . . . . . . . . . . -25oC to +100oC Operating Temperature . . . . . . . . . . . . . . . . -20oC to +100oC Lead Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . +300oC
DC ELECTRICAL CHARACTERISTICS VS = 80V, CL = 12pF, Vbias = 12V, Vin = 3.4V, Tcase = +25oC. See Figure 1.
SYMBOL ICC ICC VoutDC AV CHARACTERISTICS Supply Current @ 1MHz Supply Current @ 50MHz Output DC Level Voltage Gain Gain Matching 40 11 MIN TYP 32 55 45 13 0.2 50 15 MAX 38 UNITS mA mA V V dB
AC ELECTRICAL CHARACTERISTICS VS = 80V, CL = 12pF, Vbias = 12V, Tcase = +25oC. See Figure 1.
SYMBOL tr tf BW Le OS CHARACTERISTICS Rise Time Fall Time Bandwidth Linearity Overshoot MIN TYP 4.4 3.8 85 8 10 MAX 6.0 5.0 UNITS ns ns MHz % %
FIGURE 1. TEST CIRCUIT
12V C4 C3 C6 R1 INPUT C1 R2 Q1 11 2,7,9 VCC VBIAS 1/3 CVA2417TX 1,6,8 VIN D1 3,4,10 VOUT C2 VCC
L1
OUTPUT
R5 D2
R4 CL
R6 R3
5 GND
R1 = 8.2kW R2 = 2.7kW R3 = 10.0KW R4 = 34W R5 = 1.5kW R6 = 150W D1 = FDH400 D2 = FDH400 L1 = 560nH Q1 = 2N5770
1H-33
C1 = 0.01mF C2 = 0.01mF C3 = 0.1mF C4 = 0.47mF CL = 12pF (Including Parasitics) C6 = 1.0mF
CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025
CVA2417TX
CORPORATION
APPLICATION INFORMATION The CVA2417TX is a high voltage triple CRT driver suitable for VGA, Super VGA, IBM(R) 8514, 1280 x 1024 and 1024 x 768 non-interlaced display applications. The CVA2417TX features 80V operation and low power dissipation. The part is housed in the industry standard 11 lead TO-220 molded power package. The heat sink is floating and may be grounded for ease of manufacturing and RFI shielding. Thermal Considerations The transfer characteristics of the amplifier are shown in Figure 2. Since this is a class A input stage, power supply current increases as the input signal increases and consequently power dissipation also increases. Average dissipation per stage is 2.8W, increasing to 4.8W at minimum output voltage. The CVA2417TX cannot be used without heat sinking. Figure 2 shows the power dissipated in each channel over the operating voltage range of the device, Typical "average" power dissipation with the device output voltage at one half the supply voltage is 2.8W per channel for a total dissipation of 8.4W package dissipation. Under white screen conditions, i.e.: 15V output, dissipation increases to 4.8W per channel or 14.4W total. The CVA2417TX case temperature must be maintained below +100oC. If the maximum expected ambient temperature is +50oC, then a heat sink is needed with thermal resistance equal to or less than: Rth =
FIGURE 2. CVA2417TX DC Characteristics
5
OUTPUT VOLTAGE (VOLTS)
90 80 70 60 50 40 30 20 10 1 VOLTAGE POWER 3 4
POWER DISSIPATION (WATTS)
2
0
1
2
3
4
5
6
7
1H-43
INPUT VOLTAGE
The Thermalloy #14754 is one example of a heatsink that meets this requirement. The CVA2417TX maximum load is 600 to ground or V+. The output of CVA2417TX is not short circuit proof. resistance to V+ or Ground should be > 600. Any
(100 - 50oC)
14.4W
= 3.5 C/W
o
FIGURE 3.
FALL TIME
80V 80V
RISE TIME
0dB
BANDWIDTH
10V 5ns/DIV
10V 5ns/DIV
GAIN 10dB/DIV
VOLTS 10V/DIV
VOLTS 10V/DIV
1
10 MHz
100
CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025
CVA2417TX
CORPORATION
TYPICAL APPLICATION A typical application of the CVA2417TX is shown in Figure 4. FIGURE 4. TYPICAL APPLICATION
12V
C3 C4 C6 R2 C2
11 VCC
VBIAS
2,7,9 1/3 CVA2417TX VIN
D1
L1 R4
OUTPUT C1 R5
VOUT
3,4,10 D2
FROM PREAMP
R1
1,6,8
CL
5 GND
DC RESTORE
1H-34
C1 F CVA2417 1.0
C2 F 0.01
C3 F 0.1
C4 F 0.43
CL* pF 12
C6 F 1.0
R1 22
R2 47
R4 34
R5 K 1.5
D1 FDH400
D2 FDH400
L1 nH 560
Q1 2N5770
CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025

▲Up To Search▲

Price & Availability of CVA2417

	To Download CVA2417 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .