FUJITSU SEMICONDUCTOR DATA SHEET DS04-28316-2E ASSP 3-Channel 8-Bit D/A Converter MB40988 ■ DESCRIPTION The MB40988 is an 8-bit resolution ultra high-speed digital-to-analog converter, designed for video processing applications. The MB40988 has 8-bit resolution 3 channel D/A converters. Digital signals are input to the 8-bit digital input ports, and the input digital data are converted to the analog signals in minimum 80 Mega sample per seconds (MSPS). The analog output voltage is provided in a range of DC +3V to +5V (2Vp-p level) . The MB40988 is fabricated by the Fujitsu’s advanced bipolar process and housed in a 48-pin plastic QFP. The MB40988 is designed for video signal processing applications, and it is suitable for TVS and VCRS. ■ FEATURES • • • • • 8-bit x 3 channels D/A converters Max. 80 MHz input clock frequency providing 80 MSPS data conversion rate Linearity error : Max. +/-0.2% Analog input voltage range : 3V to 5V (2Vp-p level) Digital input voltage level : TTL level (Continued) ■ PACKAGE 48 pin, Plastic QFP (FPT-48P-M15) This device contains circuitry to protect the inputs against damage due to high static voltages or electric fields. However, it is advised that normal precautions be taken to avoid application of any voltage higher than maximum rated voltages to this high impedance circuit. MB40988 (Continued) • On-chip reference voltage outputs : – Output by resistor divided (0.6 x VCCA) – Output by band gap reference (VCCA - 2[V] ) • Low power consumption : Typical 440mW at 2Vp-p analog output voltage Typical 350mW at 1Vp-p analog output voltage • Single +5V power supply • Operating temperature range : -20°C to +70°C • Fujitsu’s advanced bipolar process • Package : 48-pin plastic QFP (Suffix : -PF) ■ PIN ASSIGNMENT D.GND ROUT BOUT VCCA A.GND VROUT2 VCCA VCCA A.GND GOUT A.GND VRIN 48 46 45 44 43 42 41 40 39 38 37 1 36 VROUT1 N.C. 2 35 COMP N.C. 3 34 VCCD R1 4 33 NC R2 5 32 NC R3 6 31 B8 R4 7 30 B7 R5 8 29 B6 R6 9 28 B5 R7 10 27 B4 R8 11 26 B3 NC 12 25 B2 INDEX (TOP-VIEW) (FPT-48P-M15) 13 2 47 CLK 14 15 16 17 18 19 20 21 NC G1 G2 G3 G4 G5 G6 G7 G8 22 23 24 NC NC B1 MB40988 ■ PIN DESCRIPTION Pin No. Symbol Type Name & Function 34 VCCD — +5V DC power supply pins for digital block. 48 D. GND — Ground pin for digital block. 41, 44, 47 VCCA — DC power supply pins for analog block. 39, 42, 45 A. GND — Ground pins for analog block. CLK I Clock input pin. 4 5 6 7 8 9 10 11 R1 R2 R3 R4 R5 R6 R7 R8 I Digital data input pins for R channel. 8-bit data is input to the pins. The R1 pin is the MSB and the R8 pin is the LSB. 14 15 16 17 18 19 20 21 G1 G2 G3 G4 G5 G6 G7 G8 I Digital data input pins for G channel. 8-bit data is input to the pins. The G1 pin is the MSB and the G8 pin is the LSB. 24 25 26 27 28 29 30 31 B1 B2 B3 B4 B5 B6 B7 B8 I Digital data input pins for B channel. 8-bit data is input to the pins. The B1 pin is the MSB and the B8 pin is the LSB. Power Supply Clock 1 Digital Input (Continued) 3 MB40988 (Continued) Pin No. Symbol Type Name & Function 46 ROUT O Analog signal output pin for R channel. 43 GOUT O Analog signal output pin for G channel. 40 BOUT O Analog signal output pin for B channel. I Reference voltage input pin. This pin is used to set the analog output dynamic range. When the internal reference voltage is used, this pin is connected with VROUT1 pin (36 pin) or VROUT2 pin (38 pin). When the reference voltage is supplied from the external generator, 2.65V to 4.3V or VCCA - VRIN = 0.7V to 2.2V is input to this pin. O Reference voltage output #1 pin. The output voltage is set to 0.6 x VCCA by the resistor divided method. When this pin is connected with VRIN pin (37 pin), an analog voltage is output from this pin in a range of 0.6 x VCCA to VCCA. O Reference voltage output #2 pin. The output voltage is set to VCCA - 2V by the band-gap reference method. When this pin is connected with VRIN pin (37 pin), an analog voltage is output from this pin in a range of VCCA - 2V to VCCA. COMP — Phase compesation capacitor pin. A phase compesation capacitor of 0.1µF or greater is connected between this pin and A. GND pin. NC — No connection, Leave those pins open. Analog Output Reference Voltage 37 36 38 VRIN VROUT1 VROUT2 Compesation Capacitor 35 No Connection 2, 3, 12, 13, 22, 23, 32, 33 4 MB40988 ■ BLOCK DIAGRAM CLK (MSB) R1 ROUT R2 R3 R4 Input buffer R5 Master slave Flip-Flop 8 R6 8 Buffer 8 Current switch R7 R8 VCCA (LSB) (MSB) G1 GOUT G2 G3 G4 Input buffer G5 Master slave Flip-Flop 8 G6 8 Buffer 8 Current switch G7 G8 VCCA (MSB) B1 BOUT B2 B3 B4 Input buffer B5 Master slave Flip-Flop 8 B6 8 Buffer 8 Current switch B7 B8 VCCA (LSB) Reference resistor Amp. Reference voltage #1 0.6 x VCCA D. GND A. GND VROUT1 Reference voltage #2 VCCA - 2V VROUT2 VRIN COMP VCCD VCCA 5 MB40988 ■ ABSOLUTE MAXIMUM RATINGS (A. GND = D. GND = 0V) Parameter Symbol Condition Rating Unit Power supply voltage VCCA, VCCD — –0.5 to +7.0 V Power supply voltage difference VCCD – VCCA — 1.5 V Analog reference voltage VRIN — –0.5 to VCCA +0.5 V Digital input voltage VID — –0.5 to +7.0 V Storage temperature Tstg — –55 to +125 °C Note: Permanent device damage may occur if the above Absolute Maximum Ratings are exceeded. Functional operation should be restricted to the conditions as detailed in the operational sections of this data sheet. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ■ RECOMMENDED OPERATING CONDITIONS (A. GND = D. GND = 0V) Parameter Symbol Condition Power supply voltage VCCA, VCCD Power supply voltage difference Unit Min. Typ. Max. — 4.75 5.00 5.25 V VCCA – VCCD — –0.2 — 0.2 V VCCA – VRIN — 0.70 2.00 2.20 V VRIN — 2.65 3.00 4.30 V Digital "H" level input voltage VIHD — 2.0 — — V Digital "L" level input voltage VILD — — — 0.8 V Clock frequency fCLK — — — 80 MHz Setup time tSU — 2.0 — — ns Hold time th — 4.0 — — ns Minimum clock "H" level pulse width twH — 5.0 — — ns Minimum clock "L" level pulse width twL — 5.0 — — ns Phase compesation capacitance CCOMP — 1.0 — — µF Operating ambient temperature TOP — 0 — 70 °C Analog reference voltage 6 Value MB40988 ■ ELECTRICAL CHARACTERISTICS (Recommended Operating Conditions Otherwise Noted) 1. DC Characteristics Parameter Symbol Value Min. Typ. Max. Unit Remark — Resolution — — — 8 bit Linearity error LE — — ±0.2 % DC Accuracy Digital "H" level input current IIHD — — 20 µA VIHD = 2.7 (V) Digital "L" level input current IILD –100 — — µA VILD = 0.4 (V) Reference input current IRIN — — 10 µA VRIN = 3.000 (V) Reference voltage (Resister divided) VROUT1 2.900 3.000 3.100 V VCCA = VCCD = 5.00 (V) Reference voltage (BGR) VROUT2 VCCA –2.100 VCCA VCCA –2.000 –1.900 V — Reference voltage (BGR) — — 100 — ppm/°C — RGB output voltage ratio FSR 0 — 6 % Full-scale output voltage VOFS VCCA –20 VCCA — mV Zero-scale output voltage VOZS 2.938 3.008 3.078 V VCCA = VCCD = 5.00 (V) VRIN = 3.000 (V) Output resistance RO 192 240 288 Ω Ta = 25°C Supply current ICC — 80* 147 mA VCCA = VCCD = 5.00 (V) — VCCA = VCCD = 5.25 (V) VRIN = VROUT1 * : VCCA = VCCD = 5.00V 2. AC Characteristics Parameter Symbol Value Min. Typ. Max. Unit Maximum conversion rate FS 80 — — MSPS Output propagation delay time tpd — 7 — ns Output rising time tr — 5 — ns Output falling time tf — 5 — ns tset — 15 — ns Setting time Remark Terminated A. OUT pin with 240Ω, CL = 15pF 7 MB40988 ■ AC TIMING CHART th tsu 3V 1.5V Data Input 0V tWH tWL 3V Clock Input 1.5V 0V ±1/2 LSB VOFS 90% 50% Analog Output 10% VOZS tr tf tpdLH tpdHL tsetLH tsetHL ■ DAC OUTPUT VOLTAGE RANGE INPUT OUTPUT R1 ~ 8 ROUT G1 ~ 8 GOUT B1 ~ 8 BOUT FF 00 (VCCA) VOFS 5.000V 5.000V VOZS (VRIN) 3.008V 3.000V 1LSB 8 8mV ±1/2 LSB MB40988 ■ CALCULATION OF DAC OUTPUT VOLTAGE AT IDEAL CONVERSION ROUT (GOUT, BOUT) = VCCA – 255 – N 256 X ( VCCA – VRIN ) [ N : Digital Input Code (0 to 255) ] VOFS = VCCA 255 256 VOZS = VCCA – X ( VCCA – VRIN ) ■ TYPICAL CONNECTION EXAMPLE 5V 2.2µH 2.2µH 0.01µF 47µF VCCD Data Input R 1 to 8 G1 to 8 B1 to 8 CLK Input CLKR CLKG CLKB D. GND 47µF 0.01µF VCCA ROUT GOUT BOUT VROUT2 VRIN VROUT1 COMP A. GND Data Output Connect to VROUT1, VROUT2, or external reference voltage source. 0.1µF ■ NOTES ON USE 1. Power Supply Patterns of the PCB The power supply wire patterns (VCC and GND patterns) of the PCB should be designed as wide as possible in order to reduce parasitic impedance. 2. Switching Noise In order to reduce switching noise as much as possible, noise limit capacitor must be connected between VCCD and D. GND pins and VCCA and A. GND pins. In this case, the capacitor should be connected to the GND pins side as near as possible. 9 MB40988 ■ PACKAGE DIMENSION 48 pin, Plastic QFP (FPT-48P-M15) 36 15.30±0.40 SQ (.602±.016) +0.30 12.00 –0.10 SQ +.012 .472 –.004 2.70(.106)MAX 0.05(.002)MIN (STAND OFF) 25 37 Details of "A" part 24 0.15(.006) 8.80 (.346) REF 13.60±0.40 (.535±.016) 0.20(.008) 0.15(.006)MAX INDEX 0.50(.020)MAX 48 13 "A" Details of "B" part LEAD No. 1 0.80(.0315)TYP 12 +0.05 0.30±0.06 (.012±.002) 0.16(.006) "B" M 0.15 –0.01 +.002 .006 –.0004 0~10° 0.85±0.30 (.033±.012) 0.10(.004) C 10 1994 FUJITSU LIMITED F48025S-1C-1 Dimensions in mm (inches). MB40988 FUJITSU LIMITED For further information please contact: Japan FUJITSU LIMITED Corporate Global Business Support Division Electronic Devices KAWASAKI PLANT, 4-1-1, Kamikodanaka Nakahara-ku, Kawasaki-shi Kanagawa 211-88, Japan Tel: (044) 754-3753 Fax: (044) 754-3329 North and South America FUJITSU MICROELECTRONICS, INC. Semiconductor Division 3545 North First Street San Jose, CA 95134-1804, U.S.A. Tel: (408) 922-9000 Fax: (408) 432-9044/9045 Europe FUJITSU MIKROELEKTRONIK GmbH Am Siebenstein 6-10 63303 Dreieich-Buchschlag Germany Tel: (06103) 690-0 Fax: (06103) 690-122 Asia Pacific FUJITSU MICROELECTRONICS ASIA PTE. LIMITED #05-08, 151 Lorong Chuan New Tech Park Singapore 556741 Tel: (65) 281 0770 Fax: (65) 281 0220 All Rights Reserved. The contents of this document are subject to change without notice. Customers are advised to consult with FUJITSU sales representatives before ordering. The information and circuit diagrams in this document presented as examples of semiconductor device applications, and are not intended to be incorporated in devices for actual use. Also, FUJITSU is unable to assume responsibility for infringement of any patent rights or other rights of third parties arising from the use of this information or circuit diagrams. FUJITSU semiconductor devices are intended for use in standard applications (computers, office automation and other office equipment, industrial, communications, and measurement equipment, personal or household devices, etc.). CAUTION: Customers considering the use of our products in special applications where failure or abnormal operation may directly affect human lives or cause physical injury or property damage, or where extremely high levels of reliability are demanded (such as aerospace systems, atomic energy controls, sea floor repeaters, vehicle operating controls, medical devices for life support, etc.) are requested to consult with FUJITSU sales representatives before such use. The company will not be responsible for damages arising from such use without prior approval. Any semiconductor devices have inherently a certain rate of failure. You must protect against injury, damage or loss from such failures by incorporating safety design measures into your facility and equipment such as redundancy, fire protection, and prevention of over-current levels and other abnormal operating conditions. If any products described in this document represent goods or technologies subject to certain restrictions on export under the Foreign Exchange and Foreign Trade Control Law of Japan, the prior authorization by Japanese government should be required for export of those products from Japan. F9703 FUJITSU LIMITED Printed in Japan