ITRI ES52096 ERSO 8-bit A/D Converter Features •8-Bit Resolution. •Maximum conversion rate:5 MSPS.(TYP). •Low power consumption:60 mW. •3-state TTL compatible output. •Power supply : 5V single. •Reference impedance : 300Ω(TYP) •Low input capacitance : 20pF. DESCRIPTION ES52096 is an 8 Bit CMOS A / D converter for scanner use. Conversion rates up to 5 MSPS can be attained while operating at low power consumption. This A / D converter consists of a reference voltage, data latches, encoder, comparators and clock generator. •Built-in reference voltage self bias circuit. APPLICATIONS •Scanner. 1 ITRI ES52096 ERSO 8-bit A/D Converter PIN Assignment Pin Designation & Function 1 OE DVss 24 2 DVss VRB 23 3 D0 ARBS 22 NO 2, 24 3 to 10 12 4 D1 AVss 21 1 5 D2 AVss 20 VIN 19 AVDD 18 8 D5 VRT 17 16 20, 21 11,13 14, 15, 18 17 22 19 23 9 D6 VRTS 16 10 D7 AVDD 15 11 DVDD AVDD 14 12 CLK DVDD 13 6 D3 ES52096 7 Symbol Description DVss Digital GND Do to D7 D0(LSB)to D7 (MSB)output CLK Clock input When OE = LOW , data is output OE When OE =HIGH , D0 to D7 Pin turn to high impedance VRTS Shorted with VRT, generates+ 2.6v AVSS Analog GND DVDD Digital+5v AVDD Analog +5v VRT Reference voltage(Top) VRBS Shorted with VRB,generates +0.6v VIN Analog input VRB Reference voltage (Bottom) 24PIN SOP, 24 PIN DIP Absolute Maximum Rating Supply voltage(VDD) ----------------------------------------------Reference voltage(VRT, VRB)-------------------------------------Analog input voltage(VIN) ----------------------------------------Digital input voltage(CLK)---------------------------------------Digital output voltage(VOH, VOL)--------------------------------Storage temperature(TSTG)----------------------------------------Operating temperature(TOP) --------------------------------------Lead Temperature(Soldering 10seconds) ----------------------Recommended Operating Conditions Supply voltage AVDD, AVSS DVDD, AVSS DGND, AGND Reference input voltage Analog input voltage VRB VRT VRT -VRB VIN 2 7V VDD~VSS VDD~VSS VDD~VSS VDD~VSS -55~+150℃ -20~75℃ +300℃ 4.75 to 5.25 4.75 to 5.25 0 to 100 0 and above VDD and below 1.0 to VDD VRB to VRT V V mV V V V V ITRI ES52096 ERSO 8-bit A/D Converter Electrical Characteristics Ta = 25℃，Fc = 5MSPS，VDD = +5V，VRB = 0.6V，VRT = 2.6V Characteristic Symbol Maximun conversion speed Fc Test Conditions Min Typ Max Units VIN =0.6V TO 2.6V － 5 － MSPS 230 300 450 Ω 4.0 － － V － － 1.0 V -1.1 － － mA 3.7 － － mA － ±0.3 ±0.5 LSB － ±0.5 ±1.3 LSB Fin = 1kHz ramp Reference resistance Rref Digital input voltage VIH Digital input voltage VIL Digital output current IOH VRT to VRB OE = VSS, VDD = 4.75V VOH = VDD~0.5V Digital output current IOL OE = VSS, VDD = 4.75V VOL = 0.4V Differential ED Non-linearity Integral Non-linearity Fc = 5MSPS Vin = 0.6v to 2.6v EL Fc = 5MSPS Vin = 0.6v to 2.6v 3 ITRI ES52096 ERSO 8-bit A/D Converter Ta = 25℃，Fc = 20MSPS，VDD = +5V，VRB = 0.6V，VRT = 2.6V Characteristic Digital input Symbol IIH Current Digital input VDD = 5.25V Min Typ Max Units － － 5 µA － － 5 µA － 22 25 mA － 11 － pF 4.5 6.6 8.7 mA － － 16 µA － － 16 µA V VIH = VDD IIL Current Supply current Test Conditions VDD = 5.25V VIL = 0V IDD Fc = 20MSPS NTSC ramp wave input Analog input CIN Vin = 1.5V +0.07Vms Capacitance Reference pin current IREF Digital output current IOZH OE = VSS, VDD = 5.25V VOH = VDD Digital output current IOZH OE = VSS, VDD = 5.25V VOL = 0V Self bias 1 Self bias 2 VRB 1 Short VRB and VRBS 0.6 0.64 0.68 VRT 1-VRB 1 Short VRT and VRTS 1.96 2.09 2.21 VRB = AGND 2.25 2.39 2.53 V VRT2 Short VRT and VRTS Offset voltage EOT -10 -35 -60 mV Offset voltage EOB 0 15 45 mV Output data delay Td － 15 30 ns 4 ITRI ES52096 ERSO 8-bit A/D Converter 5 ITRI ES52096 ERSO 8-bit A/D Converter 6 ITRI ES52096 ERSO 8-bit A/D Converter 7