FUJITSU SEMICONDUCTOR DATA SHEET DS04-28208-2E ASSP for Image Processing CMOS A/D Converter (1-channel, 8-bit, 18MHz) MB40C368 DESCRIPTION The MB40C368 is a high-speed A/D converter using high-speed CMOS process technology. FEATURES * * * * * * * * * * * Resolution: 8 bits Linearity error: 0.20% (Typ.) Maximum conversion rate: 18 MSPS (Min.) Power supply voltage: Analog section +3.0 V Digital section +3.0 V Digital input voltage range: TTL level Digital output voltage range: CMOS level compatible Analog input voltage range: 0.5 to 3 V (with 2 Vp-p) Analog input capacity: 15 pF (Typ.) Power consumption: 14 mW (Typical: @fCLK = 18 MHz) Additional function: Reference voltage generator circuit: VREFB = 1 V Package options: SOP24, SSOP24 PACKAGES 24-pin, Plastic SOP (FPT-24P-M01) 24-pin, Plastic SSOP (FPT-24P-M03) 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. MB40C368 PIN ASSIGNMENT (TOP VIEW) AVDD 1 24 AVSS AVDD 2 23 VRB AVSS 3 22 VREFB (LSB) D8 4 21 VINA D7 5 20 N.C. D6 6 19 VRT D5 7 18 AVDD D4 8 17 AVSS D3 9 16 AVDD D2 10 15 AVSS (MSB) D1 11 14 CLK DVSS 12 13 DVDD (FPT-24P-M01) (FPT-24P-M03) PIN DESCRIPTION Pin No. Pin name Functions 1, 2, 16, 18 AVDD Analog power supply pins (+3 V) 13 DVDD Digital power supply pin (+3 V) 3, 15, 17, 24 AVSS Analog power ground pins (0 V) 12 DVSS Digital power ground pin (0 V) 4 to 11 D1 to D8 Digital output pins. D1: MSB, D8: LSB 14 CLK Clock input pin 21 VINA Analog input pin. Input range: VRB to VRT (2 Vp-p between 0.5 to 3 V) 19 VRT Reference voltage input pin (3 V) 23 VRB Reference voltage input pin (1 V) 22 VREFB Reference voltage output pin. When connected to VRB, the pin generates 0.33 x AVDD (1 V). 20 N. C. No connection pin. Should be connected to AVDD. Values within ( ) are typical values. NOTES ON USE * Be sure to bypass the AVDD, DVDD, VRT and VRB pins to the ground using a high-frequency capacitor. The high-frequency capacitor should be connected as near the pin as possible. * Provide four clocks or more immediately after the power up to prevent current dissipation due to the indeterminate internal logic. 2 MB40C368 ABSOLUTE MAXIMUM RATINGS (See WARNING) Parameter Power supply voltage Input voltage Output voltage Storage temperature Rating Symbol Unit Min. Max. AVDD, DVDD -0.3 0.7 V CLK, VINA VRT, VRB -0.3 AVDD+0.3 V D1 to D8 -0.3 DVDD+0.3 V Tstg -55 +125 C WARNING: Semiconductor devices can be permanently damaged by application of stress (voltage, current, temperature, etc.) in excess of absolute maximum ratings. Do not exceed these ratings. RECOMMENDED OPERATING CONDITIONS Parameter Symbol Value Min. Typ. Max. Unit Power supply voltage AVDD, DVDD 2.70 3.00 3.60 V Analog input voltage VINA VRB - VRT V Analog reference voltage: T VRT - - AVDD V Analog reference voltage: B VRB 0.50 - - V VRT-VRB 1.90 2.00 2.10 V Digital "H" level input voltage VIHD 2.4 - - V Digital "L" level input voltage VILD - - 0.8 V Digital input current IID - - 5 A Clock frequency fCLK 0.1 - 18 MHz Minimum "H" level clock pulse width tw+ 22.5 - - ns Minimum "L" level clock pulse width tw- 22.5 - - ns Operating temperature range Ta -20 - 70 C Analog reference voltage range WARNING: Recommended operating conditions are normal operating ranges for the semiconductor device. All the device's electrical characteristics are warranted when operated within these ranges. Always use semiconductor devices within the recommended operating conditions. Operation outside these ranges may adversely affect reliability and could result in device failure. No warranty is made with respect to uses, operating conditions, or combinations not represented on the data sheet. Users considering application outside the listed conditions are advised to contact their FUJITSU representative beforehand. 3 MB40C368 ELECTRICAL CHARACTERISTICS DC Characteristics (1) Analog section (AVDD = DVDD = 2.70 V to +3.60 V, Ta = -20C to +70C) Parameter Value Symbol Unit Min. Typ. Max. - - 8 - bit LE - 0.20 0.30 % DLE - 0.12 0.20 % Analog input capacity CINA - 15 - pF Reference voltage VREFB - 0.33 x AVDD - V Reference current IRB -16.0 -8.0 -2.0 mA Analog power supply current AIDD - 2.2 10.0 mA Digital power supply current DIDD - 2.5 6.0 mA Resolution Linearity error Differential linearity error DC precision (2) Digital section (AVDD = DVDD = 2.70 V to +3.60 V, Ta = -20C to +70C) Parameter Symbol Value Min. Typ. Max. Unit Digital "H" level output voltage VOHD 2.4 - DVDD V Digital "L" level output voltage VOLD - - 0.4 V Digital "H" level output current IOH -400 - - A Digital "L" level output current IOL - - 1.6 mA (3) Switching section (AVDD = DVDD = 2.70 V to +3.60 V, Ta = -20C to +70C) Parameter Maximum conversion rate Digital output delay time 4 Symbol Value Unit Min. Typ. Max. fs 18 - - MSPS tpd 0 6 25 ns MB40C368 EQUIVALENT CIRCUIT * Clock input AVDD CLK AVSS * Analog input AVDD VINA AVSS * Reference voltage input AVDD VRT AVDD VRB AVSS AVSS * Reference voltage output AVDD VREFB AVSS * Digital output DVDD D1 to D8 DVSS 5 MB40C368 TIMING CHART tw+ tw- 3V 1.5 V CLK 0V SAMPLEN SAMPLEN+1 VINA tpd D1 to D8 VOH DATAN-2 DATAN-1 VOL DIGITAL OUTPUT BUFFER LOAD CIRCUIT To measurement pin Measurement point CL = 15 pF DVSS (Note) CL value includes the floating capacitance of the jig and probe. 6 DATAN 0.5 DVDD MB40C368 ORDERING INFORMATION Part number Package MB40C368PF 24-pin, Plastic SOP (FPT-24P-M01) MB40C368PFV 24-pin, Plastic SSOP (FPT-24P-M03) Remarks 7 MB40C368 PACKAGE DIMENSIONS 24-pin, Plastic SOP (FPT-24P-M01) 2.25(.089)MAX +0.25 (MOUNTING HEIGHT) +.010 15.24 -0.20 .600 -.008 0.05(.002)MIN (STAND OFF) 5.300.30 (.209.012) INDEX 1.27(.050) TYP 0.450.10 (.018.004) +0.40 6.80 -0.20 +.016 .268 -.008 7.800.40 (.307.016) +0.05 O0.13(.005) M 0.15 -0.02 +.002 .006 -.001 0.500.20 (.020.008) Details of "A" part 0.20(.008) "A" 0.10(.004) 13.97(.550)REF 0.50(.020) 0.18(.007)MAX 0.68(.027)MAX C 1994 FUJITSU LIMITED F24007S-3C-4 Dimensions in mm (inches). (Continued) 8 MB40C368 (Continued) 24-pin, Plastic SSOP (FPT-24P-M03) *: These dimensions do not include resin protrusion. +0.20 * 7.750.10(.305.004) 1.25 -0.10 +.008 .049 -.004 (MOUNTING HEIGHT) 0.10(.004) * 5.600.10 INDEX 0.650.12(.0256.0047) 7.15(.281)REF C 1994 FUJITSU LIMITED F24018S-2C-2 (.220.004) +0.10 0.22 -0.05 +.004 .009 -.002 7.600.20 (.299.008) "A" 6.60(.260) NOM +0.05 0.15 -0.02 +.002 .006 -.001 Details of "A" part 0.100.10(.004.004) (STAND OFF) 00to 10 10 0.500.20 (.020.008) Dimensions in mm (inches). 9 MB40C368 FUJITSU LIMITED 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 are 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. The products described in this document are designed, developed and manufactured as contemplated for general use, including without limitation, ordinary industrial use, general office use, personal use, and household use, but are not designed, developed and manufactured as contemplated (1) for use accompanying fatal risks or dangers that, unless extremely high safety is secured, could have a serious effect to the public, and could lead directly to death, personal injury, severe physical damage or other loss (i.e., nuclear reaction control in nuclear facility, aircraft flight control, air traffic control, mass transport control, medical life support system, missile launch control in weapon system), or (2) for use requiring extremely high reliability (i.e., submersible repeater and artificial satellite). Please note that Fujitsu will not be liable against you and/or any third party for any claims or damages arising in connection with above-mentioned uses of the products. Any semiconductor devices have an inherent chance 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 Law of Japan, the prior authorization by Japanese government will be required for export of those products from Japan. F9703 FUJITSU LIMITED Printed in Japan