AT2101 AIMTRON | Alldatasheet
Document overview
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Technical content
Features
˙Resolution: 12-Bit ± 0.5 LSB(DNL) ˙Maximum Conversion Rate: 6 MSPS ˙Built-in Sample and Hold Function ˙Built-in Reference V oltage ˙Single +5.0 V Power Supply ˙Three-State TTL Compatible Output ˙No Missing Code
Applications
˙Video Digitizing ˙Personal Computer Video ˙Multimedia ˙Digital Television General Description The AT2101 is a pipe line CMOS analog-to- digital converter with modified coding algorithm and capable of digitizing full-scale analog input signals into 12-bit digital words at sample rate of 6 MSPS. This high performance converter includes a 12- bit quantizer, high bandwidth sample/hold, and an internal reference, which eliminates the need for external reference circuitry. The AT2101 employs digital error correction techniques to provide excellent differential linearity for imaging applications. The AT2101 operates from a single +5.0V power supply. All digital inputs are CMOS compatible and the tri-state outputs are TTL-compatible. The AT2101 is ideal for most video and image processing applications that require low power dissipation and low cost. Block Diagram Timing Circuitry 12-Bit Pipelined A/D Core S/H Modified Coding algorithm 3-State Output CLK DVDD D11 VCM VIN AGND DGND Internal Reference Generator /OEAVDD VRT 3.5V VRB 1.5V
12-Bit 6MSPS A/D CONVERTER Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: service@aimtron.com.tw Pin Configuration AT2101 (28-Pin 300 mil SOP) NC VIN VCM NC NC NC NC DVDD DGND CLK D10 D11 /OE NC AGND AGND AVDD AVDD
12-Bit 6MSPS A/D CONVERTER Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: service@aimtron.com.tw Pin Description PIN NAME FUNCTION PIN NAME FUNCTION
16 DV DD Digital +5V Supply 23
1 DGND Digital GND 19
2~11 D0~D9 Digital Output Data D0 (LSB) ~D9 13 D10 D11 Digital Output Data D11 (MSB) 15 OE Output Enable Control D0~D11 Output Enabled When OE = Low D0~D11 at High Impedance When OE= High
26 VCM Common-Mode Voltage
12 CLK Clock Input 27 VIN Analog Input
17,18 21,22 25,28 NC Absolute Maximum Ratings (Beyond which damage may occur) 250C Supply Voltages Input Voltages Reference Input V oltage …………………...AGND to V DD Temperature Operating Temperature …………..…………-20 to +70 0C Lead Temperature, (Soldering 10 seconds) ……..300 0C Storage Temperature …………………...…-55 to +125 0C
12-Bit 6MSPS A/D CONVERTER Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: service@aimtron.com.tw Electrical Specifications Ta=+250C, A VDD=DVDD=+5.0V , AGND=DGND=0.0V , VRB=1V and VRT=3V , unless otherwise specified. PARAMETERS TEST CONDICTION MIN TYP MAX UNITS Resolution 12 Bits DC Accuracy (+250C) Integral Nonlinearity Differential Nonlinearity No Missing Codes Zero Error(+25 0C) Gain Error(+25 0C) ± 1.5 ± 0.5 G u a r a n t e e d ± 7.5 ± 1.25 LSB LSB %FSR %FSR Analog Input Input V oltage Range Common-Mode V oltage Input Bias Current Sample-Hold Input Bandwidth Input Resistance Input Capacitance -3dBFS 1 . 5 3 . 5 2 . 5 100 5 0 1 0 V V µA MHz KΩ pF Dynamic Performance Signal-to-Noise Ratio fin=500KHz fin=1MHz Spurious Free Dynamic Range fin=500KHz fin=1MHz Referred to Full Scale Referred to Full Scale 5 9 6 8 5 8 6 6 dB dB dB dB Timing Characteristics Output Data Delay (td) Output Data Delay (tdsl) Data Valid Time Sampling Time Offset (High ‘Z’) Tri-state circuit 1 8 3 0 100 1 0 0 5 1 0 ns ns ns ns Digital Inputs Input Current, Logic High Input Current, Logic Low Pulse Width High (CLK) Pulse Width Low (CLK) V oltage, Logic High V oltage, Logic Low V DD=5.25V, VIH=VDD V DD=5.25V, VIL=DGND 100 1 0 4.0 1 . 0 μA μA ns ns V V Digital Outputs Output Current, Logic High Output Current, Logic Low V oltage, Logic High V oltage, Logic Low V DD=min V OH=4.25V V DD=min V OL=0.4V -1.1 3.7 4 . 0 0 . 4 mA mA V V Power Supply Requirements AV DD (Analog Supply V oltage) DV DD (Digital Supply V oltage) Supply V oltage Difference Supply Current Power Dissipation (A VDD-DVDD) fs=6MSPS + 4 . 7 5 + 5 . 0 + 5 . 2 5 + 4 . 7 5 + 5 . 0 + 5 . 2 5 - 0 . 1 0 . 0 0 . 1 6 5 3 2 5 V V V mA mW
12-Bit 6MSPS A/D CONVERTER Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: service@aimtron.com.tw Timing Specifications Operating characteristic at VDD=5V , VRT=3.0V , VRB=1.0V , f(CLK)=20MHz, TA=250C (unless otherwise noted) PARAMETERS TEST CONDICTION MIN TYP MAX UNITS fCONV Maximum conversion rate 6 MSPS td Sampling delay time 4 ns tAJ Aperture jitter time 30 ps tw(H) Clock pulse High 83 ns tw(L) Clock Pulse Low 83 ns t1 Data Hold time C L=10pF 15 ns t2 New Data delay time C L=10pF 20 ns N+7 N+6N+5N+4 N+3 N+2 N+1N tw(H) tw(L) td Data Invalid N-7 N-6 N-5 N-4 N-3 N-2 N-1 N Analog input Clock Data Output
12-Bit 6MSPS A/D CONVERTER Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: service@aimtron.com.tw Typical Application Schematic +5V Analog Input D10 D11 (MSB) (MSB) Clock Input +5V
12-Bit 6MSPS A/D CONVERTER Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: service@aimtron.com.tw Package Outline (28-pin 300 mil SSOP) DIMENSIONS IN MILLIMETERS DIMENSIONS IN INCHESSYMBOLS MIN NOM MAX MIN NOM MAX A1 0.10 - 0.30 0.004 - 0.012 D 17.70 - 18.10 0.697 - 0.713 y0-80-8 h 0.25 - 0.75 0.01 - 0.029
12-Bit 6MSPS A/D CONVERTER Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: service@aimtron.com.tw Reflow Condition (IR/Convection or VPR Reflow) Reference JEDEC Standard J-STD-020A Classification Reflow Profiles Convection or IR/Convction VPR Average Heating Rate(180°C to peak) 5 °C/second max. 10 °C/second max. Preheat Temperature(125±20°C) 120 seconds max. Temperature maintained above 180°C 10~150 seconds Time within 5°C of actual Peak Temperature 10~20 seconds 60 seconds Peak Temperature Range(Note 1) 219~225°C or 235~240°C 219~225°C or 235~240°C Cooling Rate 6°C /second max. 10 °C/second max. Time 25°C to Peak Temperature 6 minutes max. *1 The maximum peak temperatures for IR and VP reflow are depending on package dimensions. Package Reflow Conditions Pkg. Thickness ≥2.5mm and all bags Pkg. Thickness <2.5mm a n d Pkg. Volume ≥350 mm3 Pkg. Thickness <2.5mm a n d Pkg. Volume <350 mm3 Convection 219~225°C Convection 235~240 °C VPR 219~225°C VPR 235~240 °C IR/Convection 219~225°C IR/Convection 235~240 °C