AD537SD datasheet(2/8 Pages) AD

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AD537–SPECIFICATIONS (typical @ +25 C with V

S (total) = 5 V to 36 V, unless otherwise noted)

AD537KD

AD537SD

Model

AD537JH

AD537JD

AD537KH

AD537SH

CURRENT-TO-FREQUENCY CONVERTER

Frequency Range

0 kHz to 150 kHz

Nonlinearity

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, I

IN = 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 M

Ω

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*

µV/°C10 µV/°C max

Safe Input Voltage

±V

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 Resistance

380

Ω

Absolute Temperature Reference

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 Resistance

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

10 mA min

Output Leakage Current in Logic “1”

(TMIN to TMAX)

200 nA max

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

µA1 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

°C to +70°C*

–55

°C to +125°C

Storage

–65

°C to +150°C*

PACKAGE OPTIONS

6, 7

D-14 Ceramic DIP

AD537JD

AD537KD

AD537SD

H-10A Header

AD537JH

AD537KH

AD537SH

NOTES

*Specifications same as AD537JH.

**Specifications same as AD537K.

1 Nonlinearity is specified for a current input level (I

IN) to the converter from 0.1

µA to 1000 µA. Converter has 100% overrange capability up to I

IN = 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.

REV. C

–2–

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