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TDA8777 Dataheets PDF



Part Number TDA8777
Manufacturers NXP Semiconductors
Logo NXP Semiconductors
Description Triple 10-bit video DAC up to 330 MHz sample frequency
Datasheet TDA8777 DatasheetTDA8777 Datasheet (PDF)

TDA8777 Rev. 03 — 15 August 2005 www.DataSheet4U.com Triple 10-bit video DAC, up to 330 MHz sample frequency Preliminary data sheet 1. General description The TDA8777 consists of three separate 10-bit video Digital-to-Analog Converters (DACs) with complementary outputs. They convert the digital input signals into analog current outputs at a maximum conversion rate of 330 MHz. The DACs are based on current source architecture. A sync pulse can be added to the green signal (sync-on-green) to al.

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TDA8777 Rev. 03 — 15 August 2005 www.DataSheet4U.com Triple 10-bit video DAC, up to 330 MHz sample frequency Preliminary data sheet 1. General description The TDA8777 consists of three separate 10-bit video Digital-to-Analog Converters (DACs) with complementary outputs. They convert the digital input signals into analog current outputs at a maximum conversion rate of 330 MHz. The DACs are based on current source architecture. A sync pulse can be added to the green signal (sync-on-green) to allow devices driven by the video DAC to be synchronized. The TDA8777 has a Power-down mode to reduce power consumption during inactive periods. The TDA8777 is fabricated in a CMOS process that ensures high functionality with low power dissipation. 2. Features s s s s s s s s s s s Triple 10-bit DAC Sampling frequency up to 330 MHz Internal voltage reference (1.21 V) Complementary outputs Direct drive of double terminated 75 Ω load into standard level TTL compatible input Sync and blank control inputs Analog output current source Power-down mode 3.3 V power supply LQFP48 package 3. Applications s s s s PC video cards High resolution image processing Digital video systems General purpose high-speed digital-to-analog conversion Philips Semiconductors www.DataSheet4U.com TDA8777 Triple 10-bit video DAC, up to 330 MHz sample frequency 4. Quick reference data Table 1: Symbol VDDA IDDA INL DNL fCLK Quick reference data Parameter analog supply voltage analog supply current integral non-linearity differential non-linearity clock frequency TDA8777HL/14/C1 TDA8777HL/24/C1 TDA8777HL/33/C1 Ptot Ipd total power dissipation current in Power-down mode 297 20 140 240 330 MHz MHz MHz mW mA Conditions Min 3.0 −2 −1 Typ 3.3 90 Max 3.6 +2 +1 Unit V mA LSB LSB 5. Ordering information Table 2: Ordering information Package Name TDA8777HL/14/C1 TDA8777HL/24/C1 TDA8777HL/33/C1 LQFP48 Description plastic low profile quad flat package; 48 leads; body 7 × 7 × 1.4 mm Version Sampling frequency Type number SOT313-2 140 MHz 240 MHz 330 MHz TDA8777_3 © Koninklijke Philips Electronics N.V. 2005. All rights reserved. Preliminary data sheet Rev. 03 — 15 August 2005 2 of 18 Philips Semiconductors www.DataSheet4U.com TDA8777 Triple 10-bit video DAC, up to 330 MHz sample frequency 6. Block diagram VSSA2 VSSA1 PSAVE RSET COMP VDDA3 VDDA2 VDDA1 48-39 30 29 13 POR 26 25 38 37 35 36 TDA8777 10 CURRENT/VOLTAGE REFERENCE Vref + Iref Iref 34 10-BIT DAC Vref + Iref 33 VREF red digital inputs (bits R9 to R0) 10 10 OUTR OUTR green digital inputs (bits G9 to G0) 10-1 10 TRIPLE MULTIPLEXER 10 BLANKING 10 INSERT 32 10-BIT DAC SYNC INSERT 31 OUTG OUTG Vref + Iref 23-14 blue digital inputs (bits B9 to B0) 10 10 10 10-BIT DAC sync DAC CONTROL MODULE 24 CLK 11 BLANK 12 SYNC 28 27 OUTB OUTB mle290 Fig 1. Block diagram TDA8777_3 © Koninklijke Philips Electronics N.V. 2005. All rights reserved. Preliminary data sheet Rev. 03 — 15 August 2005 3 of 18 Philips Semiconductors www.DataSheet4U.com TDA8777 Triple 10-bit video DAC, up to 330 MHz sample frequency 7. Pinning information 7.1 Pinning 38 PSAVE G0 G1 G2 G3 G4 G5 G6 G7 G8 1 2 3 4 5 6 7 8 9 37 RSET 36 VREF 35 COMP 34 OUTR 33 OUTR 32 OUTG 31 OUTG 30 VDDA3 29 VDDA2 28 OUTB 27 OUTB 26 VSSA2 25 VSSA1 CLK 24 001aad432 © Koninklijke Philips Electronics N.V. 2005. All rights reserved. 48 R9 47 R8 46 R7 45 R6 44 R5 43 R4 42 R3 41 R2 B6 20 40 R1 B7 21 TDA8777HL G9 10 BLANK 11 SYNC 12 VDDA1 13 B0 14 B1 15 B2 16 B3 17 B4 18 B5 19 B8 22 B9 23 Fig 2. Pin configuration 7.2 Pin description Table 3: Symbol G0 G1 G2 G3 G4 G5 G6 G7 G8 G9 BLANK SYNC VDDA1 B0 B1 B2 TDA8777_3 Pin description Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Description green digital input data; bit 0 (LSB) green digital input data; bit 1 green digital input data; bit 2 green digital input data; bit 3 green digital input data; bit 4 green digital input data; bit 5 green digital input data; bit 6 green digital input data; bit 7 green digital input data; bit 8 green digital input data; bit 9 (MSB) composite blank control input (active LOW) composite sync control input; for green channel only (active LOW) analog supply voltage 1 blue digital input data; bit 0 (LSB) blue digital input data; bit 1 blue digital input data; bit 2 Preliminary data sheet Rev. 03 — 15 August 2005 39 R0 4 of 18 Philips Semiconductors www.DataSheet4U.com TDA8777 Triple 10-bit video DAC, up to 330 MHz sample frequency Table 3: Symbol B3 B4 B5 B6 B7 B8 B9 CLK VSSA1 VSSA2 OUTB OUTB VDDA2 VDDA3 OUTG OUTG OUTR OUTR COMP VREF RSET PSAVE R0 R1 R2 R3 R4 R5 R6 R7 R8 R9 Pin description …continued Pin 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 Description blue digital input data; bit 3 blue digital input data; bit 4 blue digital input data; bit 5 blue digital input data; bit 6 blue digital input data; bit 7 blue digital input data; bit 8 blue digital input data; bit 9 (MSB) clock.


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