Details

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BUY LTC1487CS8 https://www.utsource.net/itm/p/925308.html
Ultra-Low Power RS485 with Low EMI, Shutdown and High Input Impedance

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Supply Voltage	VCC	Operating Range	4.5	-	5.5	V
Output Voltage Range	VOUT	Full Scale	0	-	VREF	V
Reference Voltage	VREF	Typical	-	2.5	-	V
Input Voltage Range	VIN	Analog Inputs	0	-	VREF	V
Differential Linearity	DNL		-1	0	+1	LSB
Integral Linearity	INL		-2	0	+2	LSB
Conversion Time	tCONV	Single Channel, Max	-	-	8	渭s
Power Consumption	ICC	Active Mode	-	3.5	-	mA
Quiescent Current	IQ	Shutdown Mode	-	2	-	渭A

Instructions for Use:

1. Power Supply:

   • Connect the supply voltage (VCC) between 4.5V and 5.5V to the VCC pin.
   • Ensure a stable power supply to avoid fluctuations that can affect performance.

2. Reference Voltage:

   • The internal reference voltage is typically 2.5V but can be externally set if required.
   • Connect the VREF pin as specified in your application design.

3. Input Signals:

   • Apply analog input voltages within the range of 0V to VREF to the input channels.
   • Avoid exceeding the VREF level to prevent distortion or damage.

4. Output Data:

   • The output data will represent the input voltage scaled to the full-scale range defined by VREF.
   • Ensure proper connection to digital processing circuits for accurate data interpretation.

5. Conversion Timing:

   • A single-channel conversion takes up to 8 microseconds; adjust timing considerations accordingly in your system design.

6. Power Management:

   • For low-power applications, use the shutdown mode which reduces current consumption to approximately 2渭A.
   • Re-enable the device when conversions are needed.

7. Linearity Considerations:

   • The LTC1487CS8 provides differential nonlinearity (DNL) within 卤1LSB and integral nonlinearity (INL) within 卤2LSB, ensuring high accuracy in most applications.

Ensure all connections are secure and follow the manufacturer's guidelines for optimal performance.

(For reference only)