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| HD49307 Three-Channel 8-bit D/A Converter November 1996 Description The HD49307 is a high-speed, low-power 8-bit D/A converter monolithic CMOS LSI which has three channels of clock and RGB data inputs. It is appropriate for applications which require three channel systems, such as digital TV and graphical displays. Functions * * * * * * * * Resolution: 8 bits Linearity error: 0.2% Current output type: 13.3 mA x 3 channels Maximum conversion rate: 30 MHz (Min) Analogue output voltage range: V DD to VDD - 1 V Digital input voltage: TTL and CMOS level Power supply voltage: +5.0 V single Power consumption: 300 mW (Typ) HD49307 Pin Arrangement 2 HD49307 Pin Functions Pin No. 42, 45 to 51 52 to 54, 1 to 5 6, 8 to 12, 16, 17 38 36 33 19 20 21 26 25 23, 41 31, 39 32, 34, 37, 40 22 30 7, 13 to 15, 18, 24, 27 to 29 35, 43, 44, 55, 56 Note: Symbol R1 to R8 G1 to G8 B1 to B8 Rout Gout Bout RCLK GCLK BCLK CBL CBU DV DD AVSS AVDD DV SS VRREF NC Function R channel digital signal input: R1 = MSB, R8 = LSB G channel digital signal input: G1 = MSB, G8 = LSB B channel digital signal input: B1 = MSB, B8 = LSB R channel analog signal output G channel analog signal output B channel analog signal output R channel clock input G channel clock input B channel clock input Bypass capacitor pin Phase compensation capacitance pin Digital power supply Analog ground Analog power supply Digital ground Reference voltage input pin No connections* 1 1. Do not connect anything to the NC pins. 3 HD49307 Output Function Table (V DD = 5 V, RL = 75 , REX = 3.43 k) Step 0 1 . . . 127 128 129 . . . 254 255 B1 (MSB) B2 0 0 . . . 0 1 1 . . . 1 1 0 0 . . . 1 0 0 . . . 1 1 B3 0 0 . . . 1 0 0 . . . 1 1 B4 0 0 . . . 1 0 0 . . . 1 1 B5 0 0 . . . 1 0 0 . . . 1 1 B6 0 0 . . . 1 0 0 . . . 1 1 B7 0 0 . . . 1 0 0 . . . 1 1 B8 (LSB) Vout (V) 0 1 . . . 1 0 1 . . . 0 1 4.000 4.004 . . . 4.498 4.502 4.506 . . . 4.996 5.000 4 HD49307 Block Diagram 5 HD49307 Absolute Maximum Ratings (Ta = 25C) Item Power supply voltage Digital input voltage Allowable dissipation Operating temperature Storage temperature Symbol VDD VIN PT Topr Tstg Rated value +6.0 -0.3 to VDD + 0.3 600 0 to +70 -55 to +125 Unit V V mW C C Electrical Characteristics (Ta = 25C, VDD = 5.0 V, RL = 75 , REX = 3.43 k) Item Resolution Maximum conversion speed Minimum conversion speed Linearity error High level clock pulse width Low level clock pulse width Data setup time Data hold time Power supply voltage Current dissipation Digital input voltage f CLK (Max) f CLK (Min) LE t WH t WL t SU th VDD I DD VIH VIL Analog output voltage Full scale Zero scale VA (Full) VA (Zero) Symbol Min 8 30 -- -0.2 15 15 15 15 4.75 -- 2 0 4.99 3.95 Typ 8 -- -- -- -- -- -- -- 5.00 60 -- -- 5.00 4.00 Max 8 -- 0.5 0.2 -- -- -- -- 5.25 70 VDD 0.8 5.01 4.05 Unit bits MHz MHz LSB ns ns ns ns V mA V V V V f CLK = 30 MHz Test conditions 6 HD49307 Timing Chart 7 HD49307 When using this document, keep the following in mind: 1. This document may, wholly or partially, be subject to change without notice. 2. All rights are reserved: No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without Hitachi's permission. 3. Hitachi will not be held responsible for any damage to the user that may result from accidents or any other reasons during operation of the user's unit according to this document. 4. Circuitry and other examples described herein are meant merely to indicate the characteristics and performance of Hitachi's semiconductor products. Hitachi assumes no responsibility for any intellectual property claims or other problems that may result from applications based on the examples described herein. 5. No license is granted by implication or otherwise under any patents or other rights of any third party or Hitachi, Ltd. 6. MEDICAL APPLICATIONS: Hitachi's products are not authorized for use in MEDICAL APPLICATIONS without the written consent of the appropriate officer of Hitachi's sales company. Such use includes, but is not limited to, use in life support systems. Buyers of Hitachi's products are requested to notify the relevant Hitachi sales offices when planning to use the products in MEDICAL APPLICATIONS. 8 |
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