ADC541 APITECH | Alldatasheet

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165Cedar Hill Street,Marlborough,MA01752 Tel:508.485.6350 Fax: 508.485.5168 FU N CTION AL D IAG RAM (13) 19 (4) 18 (5) 17 (6) 16 (7) 8 (8) 7 (9) 6 (10) 5 (11) 9 (12) 10 (3) 10 (23) 12 (2) (22) (21) GA IN A DJ BIT 8 (LSB) BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 (M SB) M SB STA TUS STA RT CLOCK IN SERIA L OUT DIG GND DA C SUCCESSIV E A PPROXIM A TION REGISTER REF CLOCK PIN OUTS n - A DC541 (n)-A DC542 COM P +15V A NA GND SUM M ING JUNCT 10V INPUT 20V INPUT BIPOLA R OFFSET -15V CLOCK OUT +5V 22 (19) 2 (17) 3 (18) 24 (14) 23 (15) 1 (16) 20 (20) (1) 14 (24) 5k 5k 6.2k K EY LINES A LL UNITS A D541 ONLY A D542 ONLY

FEATURES

  • 2.5µS conversion time
  • Low Power: 650mW
  • W ide temperature range models: -55ºC to +125ºC operation
  • M IL-STD-883 or commercial/industrial processing
  • Plug-in replacements for A DC82

DESCRIPTION

The A DC541/542 Series are fast, low power, hybrid IC analog-to-digital converters (A CDs). The series features 8-bit resolution and accuracy with 2.5µS typical conversion time. The lower power drain of 650 mW is from standard ±15 V DC and +5V DC power supplies. A ll models are hermetically seated in 24-pin DIP style packages and are complete with precision thin-film DA C, clock, comparator reference and successive approximation register. The A DC541C-8 and A DC542C-8 are processed to commercial/industrial standards and operate –25ºC to +85ºC. A DC541B-8 and A DC542B-8 are processed to M IL-STD-883 Rev.C, Level B requirements, and operate –55ºC to +125ºC. In addition, the A DC542 versions are plug-in replacements for the A DC82. A ll models can be externally pin-connected for 3 unipolar and 3 bipolar input ranges. Output coding in the bipolar mode is user selectable as either offset binary or 2’s complement. A DC541/ 542 feature an overall temperature coefficient of ± 45 ppm/ºC and long-term stability if 0.1% /year. A DC541/542 models provide systems designers with greater flexibiity savings in space and weight and the ultimate in reliability. Their compact size, 8-bit resolution, accuracy an extensive self-contained features are particularly well suited to microprocessor applicat ions. 8-Bit, W ide Temperature 2.5µS AD Cs AD C541/542 Data Converter Line www.SpectrumMicrowave.com

  1. Initial offset and gain errors are externally adjustable. See APPLI- CATIONS INFORM ATION. 2. Includes effects of Linearity, offset, and gain errors. ADC542 CASE A (CERAM IC): ADC542 CASE B (M ETAL): ADC541 0.165 (4.191) 0.010 (0.254) 0.600 (15.24) 0.018 (0.451) 0.100 (2.54)1.295 (32.893) 0.790 (20.066) 0.025 (0.635) 0.205 (5.207) TY PICAL DIM ENSIONS TOP VIEW PIN (1) INDEX 12 13 1 24 0.010 (0.254) 0.600 (15.24) 0.775 (16.685) 0.018 ± 0.002 (0.045 ± 0.054) inch mm M AX DIM ENSION inches (mm) 0.220 (5.588) M IN 0.175 (4.45) M AX 1.275 (32.305) M AX 0.100 (2.450) TY P 0.10 (2.54) 0.03 (0.762) STANDOFFS SUPPLIED RED DOT INDICATES PIN 1 1 24 12 13 TOP VIEW O RDERING INFO RMATIO N M ODEL DESCRIPTION ADC541C-8 Commercial/Industrial Process ADC541B-8 M IL-STD-883 Rev. C, Level B Process; ADC542C-8 Commercial/Industrial Process ADC82 Pin Out Compat. ADC542B-8 M IL-STD-883 Rev. C, Level B Process; ADC82 Pin Out Compat. Specifications subject to change without notice. SPECIFICATIO NS (Typical @ +25ºC and nominal power supplies unless otherwise noted) SERIES ADC541/542 RESOLUTION 8-Bits TY PE Successive Approximation ANALOG INPUT Unipolar 0 to +5V, 0 to +10V. 0 to +20V Bipolar ±2.5V, ±5V. ±10V Impedance 500 /Volt DIGITAL INPUTS Start Command Pulse Input 100nS wide, min Logic " 1" > +2.0V; Logic " 0" < +0.8 Logic Loading 2 TTL Loads Clock in (ADC542 only) 2 TTL Loads DIGITAL OUTPUTS Data Coding, ADC541 Parallel Outputs Only Unipolar Binary Bipolar 2‘s Complimentary Offset Binary Data Coding, ADC542 Parallel and Serial Output Unipolar Complimentary Binary Bipolar Complimentary Offset Binary Complimentary 2's Complement Data Output Drive Capability 3TTL Loads Logic " 1" > +2.4V Logic " 0" > 0.4V Status Output Drive Capability 2 TTL Loads, Logic “1” during conversion Clock Out (ADC542 only) Frequency 2.85 M Hz REFERENCE Internal CONVERSION TIM E/ THROUGHPUT RATE 2.5µS, typ; 2.8µS max/400 kHz ACCURACY Quantization ±1/2 LSB max Linearity ±0.2% of F.S.R. max Offset, Unipolar and Bipolar1 ±0.2% of F.S.R. max Gain1 ±0.2% of F.S.R. max STABILITY Over Specified Temperature Range Linearity ±10ppm/ºC Gain ±40ppm/ºC Offset ±10ppm/ºC Transfer Accuracy2 ±45ppm/ºC Long Term ±0.1% /year @ +25ºC POW ER SUPPLY Requirements +15V ±3% 20mA max -15V ±3% 12mA max +5V ±5% 105mA max Rejection Ratio 0.05% /% (+15V); 0.01% /% (-15V) Power Consumption 1W max TEM PERATURE RANGE Specified ADC541C/542C 0º to 70ºC ADC541B/542B -55ºC to +125ºC Storage, All M odels -65ºC to +150ºC M ECHANICAL Case Style Case A (ceramic): ADC542 Case Envelope Dimensions Case B (metal): ADC541 PIN FUNCTION PIN FUNCTION

1 BIPOLAR OFFSET 24 +10V INPUT

2 ANALOG GND 23 +20V INPUT

3 SUM M ING JCT. 22 +15V

4 ANALOG GND 21 –15V

5 BIT 1 (M SB) 20 –15V

6 BIT 2 19 BIT 8 (LSB)

7 BIT 3 18 BIT7

8 BIT 4 17 BIT6

9 BIT 1 (M SB) 16 BIT 5

10 STATUS 15 +5V

11 DIGITAL GND 14 +5V

12 DIGITAL GND 13 START

1 CLOCK OUT 24 +5V

2 DIGITAL GND 23 SRART

3 STATUS 22 CLOCK IN

4 Bit 8 (LSB) 21 SERIAL OUT

5 Bit 7 20 –15V

6 Bit 6 19 15V

7 Bit 5 18 SUM M ING JCT

8 Bit 4 17 ANALOG GND

9 Bit 3 16 BIPOLAR OFFSET

10 Bit 2 15 20V INPUT

11 Bit 1 (M SB) 14 10V INPUT

12 Bit 1 (M SB) 13 GAIN ADJUST

Consult factory for application information. ADC541/542