AT1175 Preliminary Product Information 8-Bit 20MSPS CMOS VIDEO A/D CONVERTER Features General Description Resolution: 8-Bit 0.5 LSB(DNL) Maximum Conversion Rate: 20 MSPS Built-in Sample and Hold Function Built-in Reference Voltage Self Bias Circuit Single +5.0 V Power Supply Three-State TTL Compatible Output Direct Replacement for the Sony CXD1175 The AT1175 is a CMOS two-step A/D converter capable of digitizing full-scale analog input signals into 8-bit digital words at sample rate of 20 MSPS. Applications Video Digitizing Personal Computer Video Multimedia Digital Television For most application, no external sample-andhold or video driving amplifiers are needed thanks to the device's narrow aperture time, wide bandwidth, and low input capacitance. The AT1175 operates from a single +5.0V power supply and has an internal voltage reference, which eliminates the need for external reference circuitry. All digital inputs are CMOS compatible and the tri-state outputs are TTLcompatible. The AT1175 is ideal for most video and image processing applications that require low power dissipation and low cost. Block Diagram Aimtron reserves the right without notice to change this circuitry and specifications. 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: service@aimtron.com.tw 1 AT1175 Preliminary Product Information 8-Bit 20MSPS CMOS VIDEO A/D CONVERTER Pin Configuration Ordering Information Part number. Package Marking AT1175S AT1175S_GRE SOP24( 300 mil) SOP24(300 mil),Green AT1175S AT1175S, date code with one bottom line Pin Description PIN NAME FUNCTION Output Enable Control 1 OE D0~D7 Enabled When OE = Low PIN NAME FUNCTION 14 15 18 AVDD Analog +5V Supply 23 VRB Reference Voltage (Bottom) 17 VRT Reference Voltage (Top) VIN Analog Input D0~D7 at Tri-state When OE = High 2,24 DGND Digital GND 3~10 D0~D7 11,13 DVDD Digital +5V Supply 19 12 CLK 20 21 AGND Analog GND 16 VRTS Shorted with VRT to Generate +2.6V Reference 22 VRBS Shorted with VRB to Generate +0.6V Reference Digital Output Data D0 (LSB), D7(MSB) Clock Input 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: service@aimtron.com.tw 2 AT1175 Preliminary Product Information 8-Bit 20MSPS CMOS VIDEO A/D CONVERTER Absolute Maximum Ratings (Beyond which damage may occur) 250C Supply Voltages Temperature VDD ...................................................-0.5 to +7.0 V Operating Temperature ..........................-20 to +700C Input Voltages Junction Temperature ....................................1750C Analog Input .......................................AGND to VDD Lead Temperature, (Soldering 10 seconds) ...........3000C Reference Input Voltage .........................AGND to VDD Storage Temperature ............................-55 to +1250C ESD Susceptibility ....................................1,500V Electrical Specifications Ta=+250C, AVDD=DVDD= VDD =+5.0V, AGND=DGND=0.0V, VRB=1V and VRT=3V, fs=20 MSPS ,unless otherwise specified. PARAMETERS Resolution DC Accuracy (+250C) Integral Nonlinearity Differential Nonlinearity Zero Scale Error Full Scale Error No Missing Codes Analog Input Input Voltage Range Input Bias Current Input Resistance Input Capacitance Reference Input Reference Ladder Resistance Reference Current Reference Input Voltage Reference Differential Internal Bias1 Internal Bias2 (VRT) Dynamic Performance Signal-To-Noise Ratio fin=1.667MHz fin=3.85MHz Spurious Free Dynamic Range fin=1.667MHz fin=3.85MHz Differential Phase Differential Gain Digital Inputs Voltage, Logic High TEST CONDICTION MIN 8 fs=20 MSPS, VIN =1.0V to 3.0V EZS EFS -10 0 VIN VRB 100 VRT to VRB VRT - VRB =2.0V VRB VRT VRT - VRB VRB VRT -VRB Short VRT and VRTS Short VRB and VRBS Short VRT and VRTS Short VRB and AGND TYP MAX UNITS Bits 0.8 0.5 -35 -60 45 60 Guaranteed LSB LSB mV mV VRT 5.0 V A k pF 200 15 200 5.2 0.0 2.0 1.0 0.55 1.9 270 7.5 0.6 2.6 0.60 2.0 340 10.5 3.0 VDD 5.0 0.65 2.1 mA V V V V V 2.25 2.39 2.53 V 44 43 46 dB dB 43 41 48 42 0.7 1.0 dB dB Degrees % fs=14.29 MSPS fs=14.29 MSPS NTSC 40 IRE Mod Ramp fs=14.3 MSPS 4.0 VDD V 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: service@aimtron.com.tw 3 AT1175 Preliminary Product Information 8-Bit 20MSPS CMOS VIDEO A/D CONVERTER Voltage, Logic Low Input Current, Logic High Input Current, Logic Low Digital Outputs Output Current, Logic High Output Current, Logic Low Output Current, High `Z' Voltage , Logic High Voltage , Logic Low Power Supply Requirements AVDD (Analog Supply Voltage) DVDD (Digital Supply Voltage) Supply Voltage Difference Supply Current Power Dissipation 0 VDD=max, VIH=VDD VDD=max, VIL=DGND VDD=min VOH=4.25V - 1.1 VDD=min VOL=0.4V 2.0 VDD=max /OE=VDD IOH =-4mA 3.5 IOL =4mA (AVDD-DVDD) fs=20 MSPS(Does not include ref. current) NTSC ramp wave input +4.75 +4.75 -0.1 1.0 5.0 5.0 V A A 1 mA mA A V V 0.8 +5.0 +5.0 0.0 30 +5.25 +5.25 0.1 V V V mA 150 mW Timing Specifications Ta=+250C, AVDD=DVDD= VDD =+5.0V, AGND=DGND=0.0V, VRB=1V and VRT=3V, fs=20 MSPS ,unless otherwise specified. PARAMETERS fS Maximum conversion rate tW(H) Pulse Width High tW(L) Pulse Width Low td(D) Digital output delay time tAJ Aperture jitter time td(S) Sampling delay time ten Output Enable time tdis Output Disable time tw(H) TEST CONDICTION fin=1kHz ramp MIN 20 15 15 CL10pF CL=10pF CL=10pF TYP MAX 18 30 4 5 7 30 UNITS MSPS ns ns ns ps ns ns ns N+4 N+5 tw(L) Clock N Analog input N+1 N+2 td(s) N+3 td(D) Data Output N-3 N-2 N-1 N tdis N+2 ten OE 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: service@aimtron.com.tw 4 AT1175 Preliminary Product Information 8-Bit 20MSPS CMOS VIDEO A/D CONVERTER Digital Output Code Input Signal Voltage VRT . . . . . . . . VRB Step 0 . . . 127 128 . . 254 255 Digital output code MSB LSB 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 . . 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 . . 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 Typical Application Schematic 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: service@aimtron.com.tw 5 AT1175 Preliminary Product Information 8-Bit 20MSPS CMOS VIDEO A/D CONVERTER Package Outline (24-pin 300 mil Plastic SOP) SYMBOLS A A1 A2 B C D E e H L y DIMENSIONS IN MILLIMETERS MIN NOM MAX 2.36 2.49 2.64 0.10 0.30 2.34 0.33 0.41 0.51 0.23 0.25 0.33 15.19 15.39 15.49 7.39 7.49 7.59 1.27 10.01 10.31 10.64 0.38 0.81 1.27 0 8 DIMENSIONS IN INCHES MIN 0.093 0.004 0.013 0.009 0.598 0.291 0.394 0.015 0 NOM 0.098 0.092 0.016 0.010 0.606 0.295 0.050 0.406 0.032 - MAX 0.104 0.012 0.020 0.012 0.610 0.299 0.419 0.050 8 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: service@aimtron.com.tw 6