AD537SD Price|Datasheet

AD537SD

IC V/F CONV 14-CDIP

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Shenzhen: 9401 pcs

Shanghai: 1167 pcs

Hong Kong: 4577 pcs

United States: 5495 pcs

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Specifications of AD537SD

Part Number	AD537SD
Date Code	2034
Quantity Available	20640 pcs
Manufacturer	Analog Devices Inc.
Lead Time	Ship within 24 hours
QTY	2000
Datasheet	AD537.pdf
Minimum Quantity	More than 50pcs
Distributor	SingSun
RoHS Status	Lead free / RoHS Compliant
Ship From	Hong Kong
Shipment Way	EMS/SF/DHL/TNT/UPS/FedEx
Country of Assembly	KOREA
Country of Diffusion	UNITED STATES
Lot Number	WE19175.65
MSL	1

Base Product Number	AD537
Packaging	Tube
Series	-
Type	Voltage to Frequency
Frequency - Max	100kHz
Full Scale	±30ppm/°C
Linearity	±0.05%
Mounting Type	Through Hole
Package / Case	14-CDIP (0.300", 7.62mm)
Supplier Device Package	14-CDIP

AD537SD Features

● Low Cost A-D Conversion
● Versatile Input Amplifier
○ Positive or Negative Voltage Modes
○ Negative Current Mode
○ High Input Impedance, Low Drift
● Single Supply, 5 V to 36 V
● Linearity: ±0.05% FS
● Low Power: 1.2 mA Quiescent Current
● Full-Scale Frequency up to 100 kHz
● 1.00 V Reference
● Thermometer Output (1 mV/K)
● F-V Applications
● MIL-STD-883 Compliant Versions Available

AD537SD Applications

PRODUCT HIGHLIGHTS
1、The AD537 is a complete V-F converter requiring only an external RC timing network to set the desired full-scale frequency and a selectable pull-up resistor for the open collector output stage. Any full-scale input voltage range from 100 mV to 10 volts (or greater, depending on +VS) can be accommodated by proper selection of timing resistor. The full-scale frequency is then set by the timing capacitor from the simple relationship, f = V/10RC.
2、The power supply requirements are minimal, only 1.2 mA quiescent current is drawn from a single positive supply from 4.5 volts to 36 volts. In this mode, positive inputs can vary from 0 volts (ground) to (+Vs - 4) volts.Negative inputs can easily be connected for below ground operation.
3、F-V converters with excellent characteristic are also easy to build by connecting the AD537 in a phase-locked loop. Application particulars are shown in Figure 6.
4、The versatile open-collector NPN output stage can sink up to 20 mA with a saturation voltage less than 0.4 volts. The Logic Common terminal can be connected to any level between ground (or -V) and 4 volts below +Vs.This allows easy direct interface to any logic family with either positive or negative logic levels.
5、The AD537 is available in versions compliant with MIL STD-883. Refer to the Analog Devices Military Product Databook or current AD537/883B data sheet for detailed specifications.

AD537SD Description

The AD537SD is a monolithic V-F converter consisting of an input amplifier, a precision oscillator system, an accurate internal reference generator and a high current output stage. Only a single external RC network is required to set up any full-scale (F.S.) frequency up to 100 kHz and any F.S. input voltage up to ±30 V. Linearity error is as low as ±0.05% for 10 kHz F.S., and operation is guaranteed over an 80 dB dynamic range. The overall temperature coefficient (excluding the effects of external components) is typically ±30 ppm/°C. The AD537 operates from a single supply of 5 V to 36 V and consumes only 1.2 mA quiescent current.

A temperature-proportional output, scaled to 1.00 mV/K, enables the circuit to be used as a reliable temperature-to-frequency converter; in combination with the fixed reference output of 1.00 V, offset scales such as 0°C or 0°F can be generated.

The low drift (1µV/°C typ) input amplifier allows operation directly from small signals (e.g., thermocouples or strain gages) while offering a high (250 M(Ω) input resistance. Unlike most V-F converters, the AD537 provides a square-wave output, and can drive up to 12 TTL loads, LEDs, very long cables, etc.

The excellent temperature characteristics and long-term stability of the AD537 are guaranteed by the primary bandgap reference generator and the low T.C. silicon chromium thin film resistors used throughout.

The device is available in either a TO-116 ceramic DIP or a TO-100 metal can; both are hermetically sealed packages.

The AD537SD is available in three performance/temperature grades; the J and K grades are specified for operation over the 0°C to +70°C range while the AD537S is specified for operation over the extended temperature range, -55°C to +125°C.

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