ADS930

ADS930 BURR-BROWN | Alldatasheet

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Technical content

© 1997 Burr-Brown Corporation PDS-1348B Printed in U.S.A. March, 1997 Pipeline A/D Internal Reference Timing Circuitry Error Correction 3-State OutputsT/H 8-Bit Digital Data CLK ADS930 LVDD OEPwrdn1VREFLnByCMLpBy IN IN (Opt.) ADS930

FEATURES

l +3V TO +5V SUPPLY OPERATION l INTERNAL REFERENCE l SINGLE-ENDED INPUT RANGE: 1V to 2V l LOW POWER: 66mW at +3V l HIGH SNR: 46dB l LOW DNL: 0.4LSB l 28-LEAD SSOP PACKAGE

DESCRIPTION

The ADS930 is a high speed pipelined analog-to- digital converter specified to operate from nominal +3V or +5V power supplies with tolerances of up to 10%. This complete converter includes a high band- width track/hold, a 8-bit quantizer and an internal reference. The ADS930 employs digital error correction tech- niques to provide excellent differential linearity for demanding imaging applications. Its low distortion and high SNR give the extra margin needed for telecommunications, video and test instrumentation applications. This high performance A/D converter is specified for performance at a 30MHz sampling rate. The ADS930 is available in a 28-lead SSOP package. 8-Bit, 30MHz Sampling ANALOG-TO-DIGITAL CONVERTER

APPLICATIONS

l BATTERY POWERED EQUIPMENT l CAMCORDERS l PORTABLE TEST EQUIPMENT l COMPUTER SCANNERS l COMMUNICATIONS International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111 • Twx: 910-952-1111 Internet: http://www.burr-brown.com/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132 ADS930E TM

At TA = +25°C, VS = +3V, Single-ended Input and Sampling Rate = 30MHz, unless otherwise specified. The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant any BURR-BROWN product for use in life support devices and/or systems. ADS930E PARAMETER CONDITIONS TEMP MIN TYP MAX UNITS RESOLUTION 8 Bits Specified Temperature Range Ambient Air –40 +85 °C ANALOG INPUT Differential Full Scale Input Range 0.5Vp-p 1.25 1.75 V Single-Ended Full Scale Input Range 1Vp-p 1.0 2.0 V Common-mode Voltage 1.5 V Analog Input Bias Current 1 µA Input Impedance 1.25 || 5 M Ω || pF DIGITAL INPUTS Full Logic Family TTL/HCT Compatible CMOS High Input Voltage, VIH 2.0 V DD V Low Input Voltage, VIL 0.8 V High Input Current, IIH ±10 µA Low Input Current, IIL ±10 µA Input Capacitance 5p F CONVERSION CHARACTERISTICS Start Conversion Rising Edge of Convert Clock Sample Rate Full 10k 20M Samples/s Data Latency 5 Clk Cyc DYNAMIC CHARACTERISTICS Differential Linearity Error f = 500kHz Largest Code Error Full ±0.4 ±1 LSB f = 12MHz Largest Code Error Full ±0.4 ±1 LSB No Missing Codes Full Guaranteed Integral Nonlinearity Error, f = 500kHz Full ±1.0 ±2.5 LSB Spurious Free Dynamic Range(1) f = 500kHz (–1dBFS input) Full 46 51 dBFS (2) f = 12MHz (–1dB input) Full 46 50 dBFS Two-Tone Intermodulation Distortion(3) f = 3.4MHz and 3.5MHz (–7dBFS each tone) 54 dBc Signal-to-Noise Ratio (SNR) f = 500kHz (–1dBFS input) Full 44 46 dB f = 12MHz (–1dBFS input) Full 44 46 dB Signal-to-(Noise + Distortion) (SINAD) f = 500kHz (–1dBFS input) Full 43 45 dB f = 3.58MHz (–1dBFS input) Full 42 45 dB f = 12MHz (–1dBFS input) Full 42 45 dB Differential Gain Error NTSC, PAL 2.3 % Differential Phase Error NTSC, PAL 1 degrees Output Noise Input Grounded 0.2 LSBs rms Aperture Delay Time 2n s Aperture Jitter 7 ps rms Analog Input Bandwidth Small Signal –20dBFS Input 350 MHz Full Power 0dBFS Input 100 MHz Overvoltage Recovery Time (4) 2n s DIGITAL OUTPUTS C L = 15pF Logic Family TTL/HCT Logic Coding Straight Offset Binary High Output Voltage, VOH +2.4 LV DD V Low Output Voltage, VOL 0.4 V 3-State Enable Time OE = L 20 40 ns 3-State Disable Time OE = H 2 10 ns Internal Pull-Down 50 k Ω Power-Down Enable Time PwrDn = L 133 ns Power-Down Disable Time PwrDn = H 18 ns Internal Pull-Down 50 k Ω

SPECIFICATIONS (CONT) At TA = +25°C, VS = +3V, Single-ended Input and Sampling Rate = 30MHz, unless otherwise specified. ADS930E PARAMETER CONDITIONS TEMP MIN TYP MAX UNITS ELECTROSTATIC DISCHARGE SENSITIVITY This integrated circuit can be damaged by ESD. Burr-Brown recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications. ABSOLUTE MAXIMUM RATINGS PACKAGE DRAWING TEMPERATURE PRODUCT PACKAGE NUMBER (1) RANGE ADS930E 28-Lead SSOP 324 –40 °C to +85°C NOTE: (1) For detailed drawing and dimension table, please see end of data sheet, or Appendix C of Burr-Brown IC Data Book. PACKAGE/ORDERING INFORMATION ACCURACY Gain Error Full 5.9 10 %FS Input Offset Referred to Ideal Midscale Full ±10 ±60 mV Power Supply Rejection (Gain) Δ VS = +10% Full 42 56 dB Power Supply Rejection (Offset) Full 42 56 dB Internal Positive Reference Voltage Full +1.75 V Internal Negative Reference Voltage Full +1.25 V POWER SUPPLY REQUIREMENTS Supply Voltage: +VS Operating Full +2.7 +3.0 +5.25 V Supply Current: +IS Operating, +3V Full 22 mA Power Dissipation Operating, +3V Full 66 84 mW Operating, +5V Full 168 mW Power Dissipation (Power Down) Operating, +3V Full 10 mW Operating, +5V Full 15 mW Thermal Resistance, θJA 28-Lead SSOP 50 °C/W NOTES: (1) Spurious Free Dynamic Range refers to the magnitude of the largest harmonic. (2) dBFS means dB relative to full scale. (3) Two-tone intermodulation distortion is referred to the largest fundamental tone. This number will be 6dB higher if it is referred to the magnitude of the two-tone fundamental envelope. (4) No "Rollover" of bits.

PIN DESIGNATOR DESCRIPTION 1+ V S Analog Supply 2L V DD Output Logic Driver Supply Voltage

3 NC No Connection

4 NC No Connection

5 Bit 8 (LSB) Data Bit 8 (D7)

6 Bit 7 Data Bit 7 (D6)

7 Bit 6 Data Bit 6 (D5)

8 Bit 5 Data Bit 5 (D4)

9 Bit 4 Data Bit 4 (D3)

10 Bit 3 Data Bit 3 (D2)

11 Bit 2 Data Bit 2 (D1)

12 Bit 1(MSB) Data Bit 1 (D0)

13 GND Analog Ground

14 GND Analog Ground

15 CLK Convert Clock Input

16 OE Output Enable, Active Low

17 Pwrdn Power Down Pin

19 GND Analog Ground

20 GND Analog Ground

21 LpBy Positive Ladder Bypass

22 NC No Connection

23 1V REF 1V Reference Output

24 IN Complementary Input

25 LnBy Negative Ladder Bypass

26 CM Common-Mode Voltage Output

SYMBOL DESCRIPTION MIN TYP MAX UNITS tCONV Convert Clock Period 33 100 µsn s tL Clock Pulse Low 15.5 16.5 ns tH Clock Pulse High 15.5 16.5 ns tD Aperture Delay 2 ns t1 Data Hold Time, CL = 0pF 3.9 ns t2 New Data Delay Time, CL = 15pF max 12 ns

5 Clock Cycles

N–5 N–4 N–3 N–2 N–1 N N+1 N+2Data Out Clock Analog In N N+1 N+2 N+3 N+4 N+5 N+6 N+7 Top View SSOP +V S LVDD NC NC LSB Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 MSB Bit 1 GND GND S +IN CM LnBy IN REF NC LpBy GND GND S Pwrdn OE CLK ADS930

Frequency (MHz) –20 –40 –60 –80 –100 0 5 10 15 Amplitude (dB) fIN = 500kHz SPECTRAL PERFORMANCE Frequency (MHz) –20 –40 –60 –80 –100 Amplitude (dB) fIN = 12MHz 0 5 10 15 DIFFERENTIAL LINEARITY ERROR Output Code 2.0 1.0 0.0 –1.0 –2.0 0 64 128 192 256 DLE (LSB) fIN = 500kHz TWO-TONE INTERMODULATION Frequency (MHz) –20 –40 –60 –80 –100 024 8 61 0 Magnitude (dBFS) f1 = 3.5MHz at –7dBFS f2 = 3.4MHz at –7dBFS 2f1 –f2 = 54.7dBFS 2f2 –f1 = 54.2dBFS SPECTRAL PERFORMANCE Frequency (MHz) –20 –40 –60 –80 –100 Amplitude (dB) fIN = 3.58MHz 0 5 10 15 TYPICAL PERFORMANCE CURVES At TA = +25°C, VS = +3V, Single-ended Input and Sampling Rate = 30MHz, unless otherwise specified. 0 64 128 192 256 DIFFERENTIAL LINEARITY ERROR Output Code 2.0 1.0 0.0 –1.0 –2.0 DLE (LSB) fIN = 12MHz

4.0 2.0 –2.0 –4.0 0 64 128 192 256 ILE (LSB) fIN = 500kHz UNDERSAMPLING (With Differential Input) Frequency (MHz) –20 –40 –60 –80 –100 –120 Amplitude (dB) fIN = 20MHz fS = 16MHz SWEPT POWER SFDR Input Amplitude (dBFS) 100 SFDR (dBFS, dBc) dBFS dBc TYPICAL PERFORMANCE CURVES (CONT) At TA = +25°C, VS = +3V, Single-ended Input and Sampling Rate = 30MHz, unless otherwise specified. SPURIOUS FREE DYNAMIC RANGE vs TEMPERATURE Temperature (°C) –50 0 25–25 50 75 100 SFDR (dBFS) fIN = 500kHz fIN = 12MHz DYNAMIC PERFORMANCE vs INPUT FREQUENCY Frequency (MHz) 0.1 1 10 100 SFDR, SNR (dB) SFDR SNR DIFFERENTIAL LINEARITY ERROR vs TEMPERATURE Temperature (°C) 0.7 0.6 0.5 0.4 0.3 0.2 –50 0 25–25 50 75 100 DLE (LSB) fIN = 500kHz fIN = 10MHz

TYPICAL PERFORMANCE CURVES (CONT) At TA = +25°C, VS = +3V, Single-ended Input and Sampling Rate = 30MHz, unless otherwise specified. GAIN ERROR vs TEMPERATURE Temperature (°C) 6.5 6.0 5.5 5.0 4.5 –50 0 25–25 50 75 100 Gain (%FSR) POWER DISSIPATION vs TEMPERATURE Temperature (°C) –50 0 25–25 50 75 100 Power Dissipation (mW) SIGNAL-TO-NOISE RATIO vs TEMPERATURE Temperature (°C) 02 5–25–50 50 75 100 SNR (dB) fIN = 500kHz fIN = 12MHz OFFSET ERROR vs TEMPERATURE Temperature (°C) –50 0 25–25 50 75 100 Offset Error (mV) OUTPUT NOISE HISTOGRAM (DC Input) Output Code N–2 N N–1 N+1 N+2 Counts (x 105)