ASAHI KASEI [AK5482] AK5482 10BIT 20MHz PIPELINE AD CONVERTER General Description AK5482 is a 10bit 20MHz AD Converter with Pipeline Architecture. By advanced CMOS Technology, high conversion performance is realized under low power consumption at +3V single power supply. Features � Monolithic CMOS A/D Converter � Resolution :10Bit � Sampling Rate :20MHz � Integrated Sample & Hold Circuit � Analog Input Range :1Vp-p (Single End) � Low Voltage Single Power Supply :+3V (min.) � Interface to CMOS logic � Output Format :Binary (BOTTOM=000H , TOP=3FFH) � Integrated Vref Circuit :(TYP. 1V(Bottom)..2V(Top)) � Tristate Digital Output available � Stand-by mode � Low power consumption :50mW(TYP. at 20MSPS) 40mW(TYP. at 15MSPS) (EXCLUDING OUTPUT DRIVE CURRENT) � No Calibrations required � Linearity: Differential(DNL) +-0.5 LSB(TYP.) Integral (INL) +-1.5 LSB(TYP.) � Compact Package : 24PIN VSOP AK5482block Diagram 0160-E-04 ’97/11 - 1 - ASAHI KASEI [AK5482] � � � � Ordering Guide AK5482 -20°C+85°C 24pin VSOP(0.65mm pitch) � � � � Pin Layout **Specifications subject to change without notice 0160-E-04 ’97/11 - 2 - ASAHI KASEI [AK5482] � � � � Pin/Function Pin Pin IO Function No. Name 1 D0 O Digital Output D0(LSB) Hi Impedance when OE or CE is high 2 D1 O Digital Output D1 Hi Impedance when OE or CE is high 3 D2 O Digital Output D2 Hi Impedance when OE or CE is high 4 D3 O Digital Output D3 Hi Impedance when OE or CE is high 5 D4 O Digital Output D4 Hi Impedance when OE or CE is high 6 DVSS P Digital Ground Pin 7 DVDD P Digital Power Supply Pin 8 D5 O Digital OUTPUT D5 Hi Impednace when OE or CE is high 9 D6 O Digital OUTPUT D6 Hi Impednace when OE or CE is high 10 D7 O Digital OUTPUT D7 Hi Impednace when OE or CE is high 11 D8 O Digital OUTPUT D8 Hi Impednace when OE or CE is high 12 D9 O Digital OUTPUT D9 Hi Impednace when OE or CE is high 13 CKI I Sampling Clock Input Pin 14 OE I Output Enable Output (D0...D9) is active at OE=LOW, Hi Impedance when High 15 CE I Chip Enable (Power Down) Pin Chip Operates at LOW, Power Down & Hi Impedance at High 16 AVDD P Analog Vdd Analog Power Supply Pin 17 AVSS P ANALOG VSS Analog Ground Pin 0160-E-04 ’97/11 - 3 - ASAHI KASEI [AK5482] Pin Pin IO Function No. Name 18 VTOP IO VREF Top Voltage IO Pin (TYP.2V) Analog Input (VIN) Upper Limit Vref Pin Assigned to Input Pin under EXT mode Connected to AVSS with a 1uF capacitor at INT mode 19 VREFP O Vref Pin for Internal cIrcuit (VREFP = VCOM + 0.25V) Normally connected to AVSS with 1uF Capacitor 20 VCOM O REFERENCE CENTER (ADC COMMON) Intefnal Circuit Common Voltage Output (typ.1.5V) Normally connected to AVSS with 1uF Capacitor 21 VREFN O Vref Pin for Internal Circuit (VREFN = VCOM - 0.25V) Normally connected to AVSS with 1uF Capacitor 22 VBOT IO VREF Bottom Voltage IO Pin (TYP.1V) Analog Input (VIN) Lower Limit Vref Pin Assigned to Input Pin under EXT mode Connected to AVSS with a 1uF capacitor at INT mode 23 SEL I Operation Mode Selection Pin Vref mode and Maximum Sampling Frequency are determined VSS: Internal Vref(INT)Mode & 20MHz Mode VBOT: External Vref(EXT)Mode & 20MHz Mode VDD: Internal Vref(INT)Mode & 15MHz Mode VTOP: External Vref(EXT)Mode & 15MHz Mode 24 VIN I NOTE: I:INPUT O:OUTPUT IO:INPUT & OUTPUT P:POWER 0160-E-04 ’97/11 - 4 - ASAHI KASEI [AK5482] Absolute Maximum Rating (AVSS,DVSS=0V,All Voltages with respect to ground) Parameter Symbol Condition Rating Unit Power Supplies V (Analog) AVDD 6 V (Digital) DVDD 6 V Analog Input VINA AVDD + 0.3 Voltage(VIN) ~ AVSS - 0.3 V Digital Input VINL DVDD + 0.3 Voltage ~ DVSS - 0.3 V Digital Output VONL DVDD + 0.3 Voltage ~ DVSS - 0.3 V Reference VINR AVDD +0.3 Voltage ~ AVSS - 0.3 V Temperature °C (Ambient) TA -20~85 (Storage) Tstg -40~+125 °C Warining: Operation at or beyond these limits may result in permanent damage to the device. Normal operation is not guaranteed at these extremes. Recommended Operating Conditions (DVSS,AVSS=0V) Parameter Symbol Condition min typ max Unit Power Supply AVDD (note 1) 3.0 3.3 3.6 V Voltage DVDD 3.0 3.3 3.6 V Analog Input Range AIN INT mode 0.85 0.95 1.05 Vp-p EXT mode 0.9 1.0 1.1 Vp-p (note 1):All voltages are with respect to Ground Electrical Characteristics 1)Digital Characteristics (AVDD=DVDD=3.0..3.6V , AVSS=DVSS=0V, Ta=TAMIN~TAMAX°C Measurement under static state.) Parameter Symbol Condition min typ max unit Hi Level Input Voltage VIH 0.7DVDD V Lo Level Input Voltage VIL 0.3DVDD V Hi Level Output Voltage VOH IOH=-3mA 0.7DVDD V Lo Level Output Voltage VOL IOL=3mA 0.3DVDD V Hi Level Input Current IIH VIH=DVDD -10 10 uA Lo Level Input Current IIL VIL=0V -10 10 uA HI-Z Output Current(HI) IOZH OE= 10 uA DVDD HI-Z Output Current(LO) IOZL OE= -10 uA DVDD 0160-E-04 ’97/11 - 5 - ASAHI KASEI [AK5482] 2)Analog Characteristics (AVDD,DVDD=3.0..3.6V , DVSS,AVSS=0V, Ta=25°C ;VTOP=2.0V VBOT=1.0V:) Parameter Symbol Conditions min typ max Unit Resolution RES 10 BITS 2-1 DC Accuracy Parameter Symbol Conditions min typ max Unit Integral INL Fs=18MHz +-1.5 +-2.5 LSB Non Linearity (@20MHz mode) Fs=15MHz Differential DNL +-0.5 +-1.0 LSB (@15MHz mode) Non Linearity Offset Voltage EOB TO VBOT -100 +100 mV EOT TO VTOP(note2) -100 +100 mV Gain Error 1 %FS (note2 ) Offset Voltage shows the difference between VIN and VBOT(VTOP) at Digital Outputs are all zero(all one). 2-2 Power Supplies Parameter Symbol Conditions min typ max Unit Power Supply Fin=1MHz Current(Analog) IA+ FS=20MHz 14.5 18 mA FS=15MHz* 11.0 14 mA Power Supply Fin=1MHz NOTE3 Current ID+ FS=20MHz 5.0 8.0 mA (Digital) FS=15MHz* 3.5 7.0 mA Power Down mode Current (Analog) IAS 0.1 mA (Digital) IDS 0.1 mA (note3 ) Measurement under CL=10pF to each D0..D9 Output Pin *When 15MHz is selected by SEL pin 2-3 Analog Input Parameter Symbol Conditions min typ max Unit Analog Voltage Range AIN INT mode 0.85 0.95 1.05 Vpp (Single End) EXT mode 0.9 1.0 1.1 Vpp Analog Input Current AIH VIN=2.0V 10 uA Analog Input Current AIL VIN=1.0V -10 uA Input Capacitance CIN 10 pF Analog Input Bandwidth BW -1dB 21 MHz 0160-E-04 ’97/11 - 6 - ASAHI KASEI [AK5482] 2-4 Voltage Reference 2-4-1 Internal VREF Output (INT Mode) Parameter Symbol Conditions min typ max Unit Vref Output Voltage VBOTI 0.85 0.95 1.05 V (Bottom) Vref Output Voltage VTOPI 1.85 1.90 2.05 V (Top) Vref Output Current AVR -0.1 0.1 mA 2-4-2 External VREF Input Conditions(EXT Mode) Parameter Symbol Conditions min typ max Unit Vref Input Voltage Bot VBOTE (note 4) 0.85 0.95 1.05 V Vref Input Voltage Top VTOPE (note 4) 1.85 1.95 2.05 V Vref Input Impedance ZTBE VBOT - VTOP 100 200 KOHM (note 4:Voltage from VBOTE to VTOPE are subjected to the same range of the Input Volage Range(item 2-3). 2-5 Dynamic Characterisitcs Parameter Symbol Conditions min typ max Unit S/(N+D) SND FS=18MHz Fin=1MHz 56 dB S/N SNR FS=18MHZ FIN=1MHz 58 dB 0160-E-04 ’97/11 - 7 - ASAHI KASEI [AK5482] 2-6 Switching Characteristics (AVDD,DVDD=3.0....3.6 V, AVSS,DVSS=0V, Ta=TAMIN~TAMAX°C) Parameter Symbol Conditions min typ max Unit Max. Conversion Rate Fcmax 18 MHz Min. Conversion Rate Fcmin 0.5 MHz Clock HI period tpw1 20MHZ mode 25 ns Clock LO period tpw0 20MHZ mode 25 ns Clock Duty DUTY 15MHz mode 45 50 55 % Pipeline Delay tpd 6 6 6 CLKIN Sampling Delay tap 2 4 ns Date Output Delay tdl CL=20 pF 7 12 ns Tristate Disable Delay TPEZ ACTIVE->HI Z 20 ns Tristate Enable Delay TPZE HI Z->ACTIVE 20 ns 0160-E-04 ’97/11 - 8 - ASAHI KASEI [AK5482] Digital Logic 0160-E-04 ’97/11 - 9 - ASAHI KASEI [AK5482] Package z z z z 24pin VSOP (Unit: mm) � � Package & Lead frame material � � Package molding compound: Epoxy Lead frame material: Cu Lead frame surface treatment: Solder plate 0160-E-04 ’97/11 - 10 - ASAHI KASEI [AK5482] Marking Contents of AAXXXB AA: Lot#(alphabet) XXXB: Date Code(X:numbers,B:alphabet) 0160-E-04 ’97/11 - 11 - ASAHI KASEI [AK5482] System Design 0160-E-04 ’97/11 - 12 - IMPORTANT NOTICE zThese products and their specifications are subject to change without notice. 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