ANALOG 8-/10-Bit DEVICES A-to-D Converters ADS70/AD571 REV. B 1.1 Scope. This specification covers the detail requirements for complete 8-bit and 10-bit resolution A/D converters with the three state logic outputs. 1.2 Part Number. The complete part number per Table 1 of this specification is as follows: Device Part Number -1 AD570SD/883B -2 AD571SD/883B 1.2.3 Case Outline. See Appendix 1 of General Specification ADI-M-1000: package outline: D-18. 1.3 Absolute Maximum Ratings. (T, = + 25C unless otherwise noted) Vcc to Digital Common . 2... eee +7V Vex to Digital Common... 1. 0. ee ee -16.5V Analog Common to Digital Common .. 2... 2... ee te ee ee +1V Analog Input to Analog Common... 2... 1 2 ee +15V Control Inputs 2... 2. ee ee ee eee 0 to Vcc Digital Outputs (Blank Mode) 2... 1. ee ee te ees 0 to Voc Power Dissipation . 2 2... ee ee 800mW Storage Temperature Range... 2... 1. ee 65C to + 150C Lead Temperature (Soldering 10sec) 2... 2. fe et es + 300C 1.5 Thermal Characteristics. Thermal Resistance @yc = 25C/W 8ya = 88C/W ANALOG-TO-DIGITAL CONVERTERS 6-71 ANALOG-TO-DIGITAL CONVERTERS a AD570/AD571SPECIFICATIONS Table 1. Design Sub Sub Sub Limit Group | Group | Group Test Symbol | Device?| @+25C| 1 2,3 4 Test Condition Units Relative Accuracy RA -1 0.195 0.195 | 0.195 Unipolar and Bipolar +%of FS max -2 0.098 0.195 [0.098 | 0.098 | Major Transitions + 3 Codes Differential Nonlinearity? DNL j|-1 8 8 8 All Codes Test Bits min ~2 40 8 10 10 Unipolar and Bipolar Full-Scale Error* Ag -1,2 | 40 40 Unipolar +mV max -1,2 20 20 Bipolar Full-Scale Temperature TCAgE | -1 0.781 + %of FS max Drift -2 0.488 Offset Error Vos -1t 20 20 First Transition + mV max -2 10 20 10 Offset Temperature Drift TCVos | -1 0.391 + %of FS max -2 0.195 Bipolar Zero Error Bezr -1 20 20 Low Side MSB, Transition Bipolar + mV max -2 10 20 10 Bipolar Bipolar Zero Temperature TCBpzrl| ! 0.391 Bipolar + %of FS max Drift -2 0.195 Input Resistance Rw -1,2 3 3 3 kQ) min 7 7 7 kQ) max Conversion Time* TC -1,2 15 15 15 ws min 40 40 40 ps max Three-State Leakage Current lowt -1 40 40 40 Vor. = 0.0V, Bit 1-Bit 8 + pA max -2 40 40 40 Vor. = 0.0V, Bit |-Bit 10 Power Supply Rejection Ratio PSRR | -1 78.1 78.1 78.1 16.0V< Vy: 13.5, Voc = + SV] + mV max -2 19.5 78.1 78.1 19.5 +4.5VS Voc 5.5V, Vi = 15V Power Supply Current loc -1,2 10 10 Convert +mA max 10 10 Blank lee -1,2 1S 15 mA max Digital Input High Voltage Vin -1,2 2.0 2.0 2.0 Blank and Convert +Vmin Digital Input Low Voltage Vu. 1,2 0.8 0.8 0.8 Blank and Convert +V max Digital Input High Current Ties -1,2 100 100 100 Blank and Convert, Vj =5.0V + pA max Digital Input Low Current In -1,2 100 100 100 Blank and Convert, V,;,=0.0V + pA max Digital Output Low Voltage Vou. -1 0.4 0.4 0.4 DR, Bit 1~Bit 8, lo, = +3.2mA +V max -2 0.4 0.4 0.4 Io. = + 3.2mA, DR, Bit 1-Bit 10 Digital Output High Voltage Von -1 2.4 2.4 2.4 Bit 1-Bit 8, Io = 0.5mA +Vmin -2 2.4 2.4 2.4 lon = 0.5mA, Bit t-Bit 10 NOTES Voc = +5V, Ven = 15V, Vix = +2.0V, Vir = +0.8V, analog input through 152 to Pin 13, Unipolar configuration. Ty, = 25C unless otherwise indicated Unipolar configuration Pin 15 (Bipolar Offset Control) is grounded. Bipolar configuration Pin 15 is not connected. ?For 1 (8-bit resolution device), 0.391% of full scale = 1LSB (Least Significant Bit). For 2 (10-bit resolution device), 0.098% of full scale = 1LSB. 3Minimum resolution for which no missing codes are guaranteed. For 1 device Full Scale Error guaranteed trimmable with 2002 potentiometer. For 2 device Full Scale Error guaranteed trimmable with 50M potentiometer. 5See Figure 1. 6-12 ANALOG-TO-DIGITAL CONVERTERS REV. B AD570/AD571 3.2.1 Functional Block Diagram and Terminal Assignments. DIGITAL BLANK Voc Ver COMMON CONVERT CONTAOL 0 12 16 ANALOG IN ]13 5k ANALOG COMMON 10 BIT CURRENT OUTPUT pac L eit OUTPUTS BIPOLAR OFFSET CONTROL STATE AUTO BLANK BURIED ZENER REFERENCE CONTROL 7 DATA READY DIGITAL BLANK & Vee Vs CONVERT CONTROL WwW ANALOG Ba ANALOG COMMON. 10 BIT CURRENT 10 BIT OUTPUT SAR BIT oac OUTPUTS BIPOLAR OFFSET CONTROL 3 STATE BUFFERS AUTO BLANK CONTROL TEMPERATURE COMPENSATED BURIED ZENER REFERENCE AND DAC CONTROL AD570 Wz *SEE NOTE 1, SPEC TABLE DATA READY 3.2.4 Microcircuit Technology Group. This microcircuit is covered by technology group (57). REV. B VY nc] i] @ IDENTIFIER [13] ne site| 2 17] DATA READY BIT? [s| 16 | DIGITAL COM BIT6| 4 AD570 15 [BIPOLAR OFF BITS (5 4] ANALOG COM BIT4 (ee [13] aaLos IN BIT 3] 7 el Vee BIT 2 [2 ln] BLK & CONV. MSB BIT 1 [2] [10] Vee e PINTS BITS Co IDENTIFIER 8] BIT 10 LSB BITs (Z| [17 Joara READY BIT7 Ls] 6] DIGITAL COM BIT6 fe] AD571 hs} BIPOLAR OFF BITS EI ia] ANALOG COM BIT4 [e [13] ANavoc IN aIT3 C7] 2} Vee BIT 2 [! 1] BLK & CONV. MSB BIT 1 Ce 10 | Vee ANALOG-TO-DIGITAL CONVERTERS 6-13 ANALOG-TO-DIGITAL CONVERTERS a ADS70/AD571 4.2.1 Life Test/Burn-In Circuit. Steady state life test is per MIL-STD-883 Method 1005. Burn-in is per MIL-STD-883 Method 1015 test condition (B). 15V + SQUARE 50V Sov WAVE INPUT 1. ALL RESISTORS 3.0 1% METAL FILM 1/4W. 2. OV to 5V SQUARE WAVE WITH FREQUENCY OF 20kHz OR BELOW. PULSE BLANKS OATA OUTPUTS ON RISING EDGE BLANKS DATA OUTPUTS AND STARTS / CONVERSION ON FALLING EDG HOLDS DATA oN ~ START ; B&C CONVERSION "| 2us min INPUT START STOP START CONVERSION fe 10 my ba TC mf CONVERSION oF teu} LE a INDICATES DATA READY ~~ rem wows DATA READY O.2ps AXX vYYY DATA BLANK BLANK BLANK foo ouT {OPEN} of OPEN) Zeb AXKY ZERO Figure 1. AD&70 and AD571 Timing Control Sequences 6-14 ANALOG-TO-DIGITAL CONVERTERS REV. B