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Part: TDF8771AH
Category:
Data Conversion
Description: TDF8771A; Triple 8-bit Video Digital-to-analog Converter (DAC);; Package: SOT307-2 (QFP44)
Company: Philips Semiconductors
Datasheet: Download TDF8771AH datasheet File size : 455 kB
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INTEGRATED CIRCUITS
DATA SHEET
TDF8771A Triple 8-bit video Digital-to-Analog Converter (DAC)
Product specification 2003 Apr 29
Philips Semiconductors
Product specification
Triple 8-bit video Digital-to-Analog Converter (DAC)
FEATURES · 8-bit resolution · Sampling rate up to 35 MHz · Internal reference voltage regulator · No deglitching circuit required · Large output voltage range · 1 k output load · Power dissipation only 200 mW · Single 5 V power supply · 44-pin QFP package · Operating ambient temperature from -40 to +85 °C. APPLICATIONS · General purpose high-speed digital-to-analog conversion · Digital TV · Graphic display · Desktop video processing. QUICK REFERENCE DATA SYMBOL VDDA VDDD IDDA IDDD Tamb INL DNL fclk(max) Ptot Note PARAMETER analog supply voltage digital supply voltage analog supply current digital supply current operating ambient temperature integral non-linearity differential non-linearity maximum clock frequency total power dissipation RL = 1 k; fclk = 35 MHz; note 1 fclk = 35 MHz; ramp input fclk = 35 MHz; ramp input RL = 1 k; note 1 fclk = 35 MHz CONDITIONS MIN. 4.5 4.5 10 - -40 - - 35 45 GENERAL DESCRIPTION
TDF8771A
The TDF8771A is a triple 8-bit video Digital-to-Analog Converter (DAC). It converts the digital input signals into analog voltage outputs at a maximum conversion rate of 35 MHz. The DACs are based on resistor-string architecture with integrated output buffers. The output voltage range is determined by a built-in reference source. The device is fabricated in a 5 V, CMOS process that ensures high functionality with low power dissipation.
TYP. 5.0 5.0 30 3 - ±0.3 ±0.15 - 200
MAX. 5.5 5.5 45 10 +85 ±1 ±0.5 - 360
UNIT V V mA mA °C LSB LSB MHz mW
1. Minimum and maximum data of current and power consumption are measured in worse case conditions: for minimum data, all digital inputs are at logic level 0 while for maximum data, all digital inputs are at logic level 1. ORDERING INFORMATION TYPE NUMBER TDF8771AH PACKAGE NAME QFP44 DESCRIPTION plastic quad flat package; 44 leads (lead length 1.3 mm); body 10 × 10 × 1.75 mm VERSION SOT307-2
2003 Apr 29
2
Philips Semiconductors
Product specification
Triple 8-bit video Digital-to-Analog Conver ter (DAC)
BLOCK DIAGRAM
handbook, full pagewidth
TDF8771A
VDDA 32, 35, 39, 43 4 12 to 9
VDDD 7, 27 4
clock input 31 1 reference current input (IREF)
RED digital inputs (bits R0 to R3)
TDF8771A
LSB DECODER
RED digital inputs (bits R4 to R7)
4
8 5 to 3
4
MSB DECODER
RESISTOR STRING
44
RED analog output
GREEN digital inputs (bits G0 to G3)
4
20 to 17 4
LSB DECODER
GREEN digital inputs (bits G4 to G7)
4
16 to 13
4
MSB DECODER
RESISTOR STRING
40
GREEN analog output
BLUE digital inputs (bits B0 to B3)
4
30, 29 26, 25 4
LSB DECODER
BLUE digital inputs (bits B4 to B7)
4
24 to 21
4
MSB DECODER
RESISTOR STRING
36
BLUE analog output
BANDGAP REFERENCE 34, 37, 38, 41 not connected 33 2, 42 6, 28
MGX351
reference voltage decoupling input (VREF)
VSSA
VSSD
Fig.1 Block diagram.
2003 Apr 29
3
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