AD1385TD

ANALOGDEVICES FAX-ON-DEHAND HOTLINE - Page 55 ANALOG DEVICES 16-Bit500kHz WideTemperature RangeSampling ADC AD1385 FUNCTIONAL FEATURES 16-Bit Resolution 500 kHz Sampling Rate Differential linearity Autocalibration Specified over -55°C to +125°C Range SNR 90 dB @ 100 kHz (min) THD -88 dB @ 100 kHz (min) 0.0006% FSR DNl (typ) 0.0015% FSR INl (typ) No Missing Codes :tS, :t10 V Bipolar Input Ranges Zero Offset Autocalibration OBS APPLICATIONS Medical Imaging CAT Magnetic Resonance Radar Vibration Analysis Parametric Measurement Unit (ATE) Digital Storage Oscilloscopes Waveform Recorders Analytical Instruments BLOCK DIAGRAM REF IN REF OUT OLE PRODUCT DESCRIPTION The AD 1385 is a complete 500 kHz, 16-bit, sampling analogto-digital converter contained in a single package. Its differential linearity autocalibration feature allows this high resolution, high speed converter to offer outstanding noise and distortion performance, as well as excellent INL and DNL specifications, over the full military temperature range. Autocalibration effectively eliminates DNL daft over temperature. The AD 1385 architecture includes a low noise, low distortion track/hold, a three pass digitally corrected subranging ADC, and linearity calibration circuitry. A complete linearity calibration requires only 15 ms. Precision thin-film resistors and a propdetary DAC contdbute to the part's outstanding dynamic and static performance. IN OUT VINA VINB TE The AD 1385 uses four power supplies, :!:5 V and:!: 15 V, and an external 10 MHz clock. Power dissipation is nominally 2.76 W. Two user selectable bipolar input ranges, :!:5 V and :!:10 V, are provided. Careful attention to grounding and a single package make it easy to design PCBs to achieve specified performance. The AD1385's pinoutis nearly identical to that of the AD 1382, a factory calibrated 16-bit, 500 kHz SADC. Just two additional connections, to enable and monitor autocalib ration , are required. This commonality provides an easy upgrade path to extend system performance and operating temperature range. REV.O Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties vvhich may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. One Technology Way, P.O. Box 9106, Norwood, Tel: 617/329-4700 MA 02062-9106, U.S.A. Fax: 617/326-8703 I ANALOGDEVICESFAX-ON-DEMAND HOTLINE - Page 56 AD1385-SPECI FICATIONS ~~I:S;~~;~~: n~t:~r = +S V,Vss= -S V,10 MHzExternalClock, Voo Parameter Min RESOLUTION 16 ANALOG INPUT Input Ranges Input Impedance TRANSFER CHARACTERISTICS (Combined ADCrrrack!Hold) 2.45 Integral Nonlinearity T MIN to T MAX :1:5,:1:10 2.5 Missing Codes, T MINto T MAX Gain Error4 Drift, :1:0.05 8 :1:0.05 5 :I:0.006 70 T MIN to T MAX Bipolar Zero4 Drift, T MIN to T MAX PSRR Noise OBS Max Min AD1385TD Typ Max 16 :I:0.0015 :I:0.0006 0.3 I. 2, T MIN to T MAX Differential Nonlinearity I Drift, AD1385KD Typ 2.55 2.45 :1:5,:1:10 2.5 :1:0.0015 :t 0.0006 0.3 :to.0015 None :to.15 15 :to.l0 15 :to.l0 Units Bits :t 0.05 8 :I:0.05 5 :I:0.006 70 2.55 :to.0015 None :to.15 15 :to.l0 15 :to.IO V kG % FSR3 %FSR ppml°C %FSR ppml°C %FSR ppml°C % FSRIV V rms DYNAMIC CHARACTERISTICS2 :1:5 V FSR, V1N= -0.4 dB, T MIN to TMAX Sample Rate Signal-to-Noise RatioS f=5kHz f = 100 kHz f = 200 kHz Peak Distortion f=5kHz f= 100 kHz f = 200 kHz Total Harmonic Dlstortion6 f=5kHz f = 100 kHz f = 200 kHz DYNAMIC CHARACTERISTICS2 :I:IO V FSR, V1N = -0.4 dB, T MINto T MAX Sample Rate Signal-to-Noise RatioS f=5kHz f = 100 kHz f = 200 kHz Peak Distortion f=5kHz f = 100 kHz f = 200 kHz Total Harmonic Distortion6 f=5kHz f = 100 kHz f = 200 kHz DIGITAL INPUTS Input Voltage V1L V1H Input Current Input Capacitance Clock Frequency Duty Cycle Aperture Delay7 DIGITAL OUTPUTS Output Voltage VOL @IOL = 3.2mA VOH @ IoH = -3.2 mA Output Capacitance Leakage, Outputs Disabled 500 500 OLE kHz 90 90 88 93 92 91 90 90 88 93 92 91 dB dB dB -90 -88 -82 -107 -95 -88 -90 -88 -82 -107 -95 -88 dB dB dB -90 -88 -82 -105 -95 -88 -90 -88 -82 -105 -95 -88 dB dB dB 500 TE 500 kHz 90 90 88 95 94 93 90 90 88 95 94 93 -90 -80 -74 -108 -87 -82 -90 -80 -74 -108 -87 -82 dB dB dB -90 -80 -74 -105 -87 -82 -90 -80 -74 -105 -87 -82 dB dB dB 0.8 2.25 0.8 2.25 :1:200 2.4 dB dB dB :t200 2 2 2.5-10 40-60 7 2.5-10 40-60 7 0.2 4.5 4 0.4 2.4 +200 -2- V V 0.2 4.5 4 pF MHz % ns 0.4 V V pF +200 REV. a ANALOGDEVICES fAX-ON-DEHAND HOTLINE - Page 57 AD1385 Min Parameter OUTPUT CODING ADl385KD Typ Max Min AD1385TD Typ Max Units Complementary Offset Binary or Complementary Twos Complement INTERNAL REFERENCE Voltage Current Drift 9.990 2 TEMPERATURE Specified Storage 0 -65 +70 +150 14.25 4.75 -5.25 15.75 5.25 -4.75 10.010 5 5 9.990 2 10.010 15 V mA ppm'°C -55 -65 +125 +150 °C DC 14.25 4.75 -5.25 15.75 5.25 -4.75 V V V 80 75 160 200 4.125 mA mA mA mA Watts 5 5 15 RANGE, CASE POWER REQUIREMENTS Specified Operating Range tVs +VDD -Vss Current Drains +Vs -Vs +VDD -Vss Power Dissipation OBS 52 48 104 148 2.76 52 48 104 148 2.76 80 75 160 200 4.125 OLE NOTES lIntegrallinearity is inferred from FFTs. Oifferentiallinearity is derived from histogram;. zPerformance over temperature is specified at the temperature at which the last calibration was performed. 3FSR = Full-Scate Range. 'Adjustable to zero. 5SNR excludes harmonics 2-9 ofthe fundamental. &rHO includes harmonics 2-9 of the fundamental. 1Aperture delay is the time from the rising edge on the Hold Command Input to the opening of the switch in the Track/Hold. Specifications subject to change without notice. TE TIMINGSPECIFICATIONS', 2 = -55°C to +125°C,Vs= :!:15V,Voo= +5 V,Vss= -5 V) (TA Parameter Design Minimum START COMMAND tscs tSCH AUTOZERO tAZS tAZH Unit Description 10 10 ns ns Setup Time Hold Time 10 20 ns ns Setup Time Hold Time Typ DATA VALID toys tovH 1.5 0.5 Cp3 Cp3 Setup Time Hold Time HOLD COMMAND tH to 13 7 Cp3 ns Hold Time Delay Time 2 16.5 Cp3 Cp3 Pulse Width Delay DATA STROBE iDS toso CALIBRATE PULSE WIDTH 20 ns CALIBRATION STATUS 15 ms Duration NOTES lRefertoFigures 17. 18and24. zOesign minhnlrns are derived from worst case design analysis and/or smutation results. Typical values are based on characterization data. These specifications are not guaranteed or tested. "The time duration for this parameter varies in direct proportion to the width of the Clock Pulse (CP). REV. 0 -3- ANALOGDEVICES fAX-ON-DEMAND HOTLINE - Page 58 AD1385 ABSOLUTE MAXIMUM RATINGS* +VstoAGND -VstoAGND VootoPGND VsstoPGND AGNDtoPGND AnalogInputs Reference Input DigitalInputs Output Short Circuit Duration Reference Output """""""""""'" AD1385 PIN CONNECTIONS The AD1385 is housed in a 48-pin bottom-brazed ceramic bathtub package. The pinout is as follows: 18V 18V 7V 7V :to.3V :tVs OVto+llV -O.3VtoVoo+O.3V Pin Function Indefinite Track/HoldOutput lsec DigitalOutputs. . . . . . . . . . . . . . 1 secfor Any One Output Case Temperature (Operating) -55°C to +125°C StorageTemperature. . . . . . . . . . . . . . . . . . -65°C to +150°C OBS 'Stresses greater than those listed under" Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ORDERING GUIDE 1 2 3 CLOCK IN 4 5 B2/B1O B3/Bll 45 44 6 B4/B12 43 POWER GROUND 7 8 B5/B13 POWER GROUND B6/B14 42 41 9 B7/B15 GAIN ADJUST +10 V REFERENCE -VS1 (-15 V) SIGNAL GROUND 48 VODZ(+5 V POWER) 47 POWER GROUND POWER GROUND B1/B9 46 (MSB) 10 B8/B16 (LSB) 40 39 11 12 VOOi (+5 V SIGNAL) POWER GROUND 38 37 OLE 13 14 15 Model Temperature Range (Case) Package Option* 16 AD l385KD AD l385TD AD 1385TD/883B DoCto +70°C -55°C to +125°C -55°C to +125°C DH-48A DH-48A DH-48A 17 18 'DH-48A = Bottom Brazed Ceramic DIP. Pin Function 36 VSS1(-5 V SIGNAL) SIGNAL GROUND DATA STROBE HIILO BYTE SELECT DE DATA ENABLE 34 DNC 33 DNC 19 20 HOLD COMMAND OUT SIGNAL GROUND 30 29 21 22 +VS2 (+15 V) HOLD COMMAND 23 -VS2 (-15 V) POWER GROUND DNC = DO NOT CONNECT. CAL +VS1 (+15 V) SIGNAL GROUND START CONVERT 24 Bl SELECT 35 32 31 OUT +10V REFERENCE IN TE 28 IN VSS2(-5 V POWER) AUTOZERO VIN B VIN A OFFSET ADJUST CAL STATUS 27 26 TRACKIHOLD 25 TRACKIHOLD OUTPUT SIGNAL GROUND INPUT CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the AD1385 features proprietary ESD protection circuitry. permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality. -4- REV. a - Page ANALOGDEVICESfAX-ON-DEMAND HOTLINE 59 AD1385 110 6Hz 1SV RANGE 100 , 90 , 80 70 I00kH; -10 -20 200kHz , § -O.4