AT2101
12-Bit 6MSPS A/D CONVERTER
Features
˙Resolution: 12-Bit ± 0.5 LSB(DNL) ˙Maximum Conversion Rate: 6 MSPS ˙Built-in Sample and Hold Function ˙Built-in Reference Voltage ˙Single +5.0 V Power Supply ˙Three-State TTL Compatible Output ˙No Missing Code
General Description
The AT2101 is a pipeline CMOS analog-todigital 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 12bit 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.
Applications
˙Video Digitizing ˙Personal Computer Video ˙Multimedia ˙Digital Television
Block Diagram
CLK DVDD
Timing Circuitry
VIN
S/H
12-Bit Pipelined A/D Core VRT 3.5V VRB 1.5V
Modified Coding algorithm
3-State Output
D0 . . D11
Internal Reference Generator
AVDD
VCM
AGND
/OE
DGND
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
AT2101
12-Bit 6MSPS A/D CONVERTER
Pin Configuration
AT2101 (28-Pin 300 mil SOP)
DGND D0 D1 D2 D3 D4 D5 D6 D7 D8 D9
1 2 3 4 5 6 7 8 9 10 11
28 27 26 25 24 23 22 21 20 19 18 17 16 15
NC VIN VCM NC AVDD AVDD NC NC AGND AGND NC NC DVDD /OE
CLK 12 D10 13 D11 14
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
AT2101
12-Bit 6MSPS A/D CONVERTER Pin Description
PIN NAME FUNCTION PIN NAME FUNCTION
16
DVDD Digital +5V Supply
23 24 19 20 13 14
AVDD
Analog +5V Supply
1
DGND Digital GND
AGND Analog GND
2~11
D0~D9
Digital Output Data D0 (LSB) ~D9 Output Enable Control
D10 D11
Digital Output Data D11 (MSB)
15
OE
D0~D11 Output Enabled When OE = Low D0~D11 at High Impedance When OE= High
26
VCM
Common-Mode Voltage Output
12 17,18 21,22 25,28
CLK
Clock Input
27
VIN
Analog Input
NC
Absolute Maximum Ratings (Beyond which damage may occur) 250C
Supply Voltages VDD …………………………………………...-0.5 to +7.0 V Input Voltages Analog Input ………………………………...AGND to VDD Reference Input Voltage …………………...AGND to VDD ESD Susceptibility ………………………………± 1,500V Temperature Operating Temperature …………..…………-20 to +700C Junction Temperature ………………………………1750C Lead Temperature, (Soldering 10 seconds) ……..3000C Storage Temperature …………………...…-55 to +1250C
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
AT2101
12-Bit 6MSPS A/D CONVERTER
Electrical Specifications
Ta=+250C, AVDD=DVDD=+5.0V, AGND=DGND=0.0V, VRB=1V and VRT=3V, unless otherwise specified.
PARAMETERS Resolution DC Accuracy (+250C) Integral Nonlinearity Differential Nonlinearity No Missing Codes Zero Error(+250C) Gain Error(+250C) Analog Input Input Voltage Range Common-Mode Voltage Input Bias Current Sample-Hold Input Bandwidth Input Resistance Input Capacitance Dynamic Performance Signal-to-Noise Ratio fin=500KHz fin=1MHz Spurious Free Dynamic Range fin=500KHz fin=1MHz Timing Characteristics Output Data Delay (td) Output Data Delay (tdsl) Data Valid Time Sampling Time Offset Digital Inputs Input Current, Logic High Input Current, Logic Low Pulse Width High (CLK) Pulse Width Low (CLK) Voltage, Logic High Voltage, Logic Low Digital Outputs Output Current, Logic High Output Current, Logic Low Voltage, Logic High Voltage, Logic Low Power Supply Requirements AVDD (Analog Supply Voltage) DVDD (Digital Supply Voltage) Supply Voltage Difference Supply Current Power Dissipation
TEST CONDICTION
MIN 12
TYP
MAX UNITS Bits LSB LSB %FSR %FSR V V µA MHz KΩ pF dB dB dB dB 30 100 100 10 100 10 ns ns ns ns μA μA ns ns V V mA mA V V V V V mA mW
± 1.5 ± 0.5 Guaranteed ± 7.5 ± 1.25 1.5 -3dBFS 2.5 5 100 50 10 3.5
Referred to Full Scale 59 54 Referred to Full Scale 58 (High ‘Z’) Tri-state circuit 5 VDD=5.25V, VIH=VDD VDD=5.25V, VIL=DGND 68 66 18
83 83 4.0 1.0
VDD=min VOH=4.25V VDD=min VOL=0.4V
-1.1 3.7 4.0 0.4 +4.75 +4.75 -0.1 +5.0 +5.0 0.0 65 325 +5.25 +5.25 0.1
(AVDD-DVDD) fs=6MSPS
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
AT2101
12-Bit 6MSPS A/D CONVERTER
Timing Specifications
Operating characteristic at VDD=5V, VRT=3.0V, VRB=1.0V, f(CLK)=20MHz, TA=250C (unless otherwise noted)
PARAMETERS fCONV Maximum conversion rate td Sampling delay time tAJ Aperture jitter time tw(H) Clock pulse High tw(L) Clock Pulse Low t1 Data Hold time t2 New Data delay time
TEST CONDICTION
MIN 6 83 83
TYP 4 30
MAX
CL=10pF CL=10pF
15 20
UNITS MSPS ns ps ns ns ns ns
tw(H)
tw(L)
Clock N
td
N+1 N+2 N+3 N+4
t2
Analog input
N+7 N+5 N+6
Data Output
N-7
Data Invalid
N-6
N-5
N-4
N-3
t1
N-2
N-1
N
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
AT2101
12-Bit 6MSPS A/D CONVERTER
Typical Application Schematic
+5V
15 16 17 18 19 20 14 13 12 11 10 9 8 7 6 5 4 3 2 1
D11 (MSB) D10 Clock Input D9 D8 D7 D6 D5 D4 D3 (MSB) D2 D1 D0
+5V
21 22 23 24 25 26 27
Analog Input
28
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
AT2101
12-Bit 6MSPS A/D CONVERTER
Package Outline (28-pin 300 mil SSOP)
SYMBOLS
A A1 A2 B C D E e H L y h
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 17.70 18.10 7.39 7.49 7.59 1.27 10.01 10.31 10.64 0.38 0.81 1.27 0 8 0.25 0.75
DIMENSIONS IN INCHES MIN 0.093 0.004 0.013 0.009 0.697 0.291 0.394 0.015 0 0.01 NOM 0.098 0.092 0.016 0.010 0.295 0.050 0.406 0.032 MAX 0.104 0.012 0.020 0.012 0.713 0.299 0.419 0.050 8 0.029
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 7
AT2101
12-Bit 6MSPS A/D CONVERTER
Reflow Condition (IR/Convection or VPR Reflow)
Reference JEDEC Standard J-STD-020A
Classification Reflow Profiles Convection or IR/Convction
Average Heating Rate(180°C to peak) Preheat Temperature(125±20°C) Temperature maintained above 180°C Time within 5°C of actual Peak Temperature Peak Temperature Range(Note 1) Cooling Rate Time 25°C to Peak Temperature 5°C/second max. 120 seconds max. 10~150 seconds 10~20 seconds 219~225°C or 235~240°C 6°C /second max. 6 minutes max.
VPR
10°C/second max.
60 seconds 219~225°C or 235~240°C 10°C/second max.
*1 The maximum peak temperatures for IR and VP reflow are depending on package dimensions.
Package Reflow Conditions Pkg. Thickness ≥2.5mm Pkg. Thickness
