Datasheet AD537 (Analog Devices) - 2

AD537–SPECIFICATIONS (typical @ +25
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C with VS (total) = 5 V to 36 V, unless otherwise noted) AD537KD AD537SD1 Model AD537JH AD537JD AD537KH AD537SH1
CURRENT-TO-FREQUENCY CONVERTER Frequency Range 0 kHz to 150 kHz * * * Nonlinearity1 fMAX = 10 kHz 0.15% max (0.1% typ) * 0.07% max ** fMAX = 100 kHz 0.25% max (0.15% typ) * 0.1% max ** Full-Scale Calibration Error C = 0.01 µF, IIN = 1.000 mA ±10% max ±7% max ±5% max * * vs. Supply (fMAX < 100 kHz) ±0.1%/V max (0.01% typ) * * * vs. Temp (TMIN to TMAX) ±150 ppm/°C max (50 ppm typ) * 50 ppm/°C max (30 ppm typ)2 250 ppm/°C max ANALOG INPUT AMPLIFIER (Voltage-to-Current Converter) Voltage Input Range Single Supply 0 to (+VS – 4) Volts (min) * * * Dual Supply –VS to (+VS – 4) Volts (min) * * * Input Bias Current (Either Input) 100 nA * * * Input Resistance (Noninverting) 250 MΩ * * * Input Offset Voltage (Trimmable in “D” Package Only) 5 mV max * 2 mV max ** vs. Supply 200 µV/V max 100 µV/V max 100 µV/V max ** vs. Temp (TMIN to TMAX) 5 µV/°C * 1 µV/°C 10 µV/°C max Safe Input Voltage3 ±VS * * * REFERENCE OUTPUTS Voltage Reference Absolute Value 1.00 Volt ± 5% max * * * vs. Temp (TMIN to TMAX) 50 ppm/°C * 100 ppm/°C max ** vs. Supply ±0.03%/V max * * * Output Resistance4 380 Ω * * * Absolute Temperature Reference5 Nominal Output Level 1.00 mV/K * * * Initial Calibration @ +25°C 298 mV (± 5 mV typ) * 298 mV (± 5 mV max) ** Slope Error from 1.00 mV/K ±0.02 mV/K * * * Slope Nonlinearity ±0.1 K * * * Output Resistance5 900 Ω * * * OUTPUT INTERFACE (Open Collector Output) (Symmetrical Square Wave) Output Sink Current in Logic “0” VOUT = 0.4 V max (TMIN to TMAX) 20 mA min 20 mA min 20 mA min 10 mA min Output Leakage Current in Logic “1” (TMIN to TMAX) 200 nA max * * 2 µA max Logic Common Level Range –VS to (+VS – 4) Volts * * * Rise/Fall Times (CT = 0.01 µF) IIN = l mA 0.2 µs * * * IIN = 1 µA 1 µs * * * POWER SUPPLY Voltage, Rated Performance Single Supply 4.5 V to 36 V * * * Dual Supply ±5 V to ±18 V * * * Quiescent Current 1.2 mA (2.5 mA max) * * * TEMPERATURE RANGE Rated Performance 0°C to +70°C * * –55°C to +125°C Storage –65°C to +150°C * * * PACKAGE OPTIONS6, 7 D-14 Ceramic DIP AD537JD AD537KD AD537SD H-10A Header AD537JH AD537KH AD537SH NOTES
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Specifications same as AD537JH. **Specifications same as AD537K. 1 Nonlinearity is specified for a current input level (IIN) to the converter from 0.1 µA to 1000 µA. Converter has 100% overrange capability up to IIN = 2000 µA with slightly reduced linearity. Nonlinearity is defined as deviation from a straight line from zero to full scale, expressed as a percentage of full scale. 2 Guaranteed not tested. 3 Maximum voltage input level is equal to the supply on either input terminal. However, large negative voltage levels can be applied to the negative terminal if the input is scaled to a nominal 1 mA full scale through an appropriate value resistor (See Figure 2). 4 Loading the 1.0 volt or 1 mV/K outputs can cause a significant change in overall circuit performance, as indicated in the applications section. To maintain normal operation, these outputs should be operated into the external buffer or an external amplifier. 5 Temperature reference output performance is specified from 0°C to +70°C for “J” and “K” devices, –55°C to +125°C for “S” model. 6 D = Ceramic DIP; H = Hermetic Metal Can. For outline information see Package Information section. 7 For AD537/883B specifications, refer to Analog Devices Military Products Databook. Specifications subject to change without notice. –2– REV. C