The LTC1859IG#PBF is a product from Linear Technology (now part of Analog Devices), which is a well-known manufacturer of high-performance analog integrated circuits. This particular model, LTC1859IG#PBF, is a 16-bit analog-to-digital converter (ADC) that features multiple channels and is typically used in precision measurement applications.
Packaging and Pin Function Overview:
The LTC1859IG#PBF comes in a 28-pin package (specifically a TSSOP-28). Let's go through the detailed pin-out description for the package, followed by a comprehensive FAQ related to this IC.
Pin Function Table:Here is the pin function table for the LTC1859IG#PBF, which outlines the role of each pin in the 28-pin TSSOP package.
Pin Number Pin Name Pin Type Description 1 V_SS (Pin 1) Power Supply Ground (0V) supply for the IC. 2 AIN0 (Pin 2) Input Analog Analog input channel 0 for measurement. 3 AIN1 (Pin 3) Input Analog Analog input channel 1 for measurement. 4 AIN2 (Pin 4) Input Analog Analog input channel 2 for measurement. 5 AIN3 (Pin 5) Input Analog Analog input channel 3 for measurement. 6 AIN4 (Pin 6) Input Analog Analog input channel 4 for measurement. 7 AIN5 (Pin 7) Input Analog Analog input channel 5 for measurement. 8 AIN6 (Pin 8) Input Analog Analog input channel 6 for measurement. 9 AIN7 (Pin 9) Input Analog Analog input channel 7 for measurement. 10 REF (Pin 10) Input Reference input for ADC conversion. 11 V_SS (Pin 11) Power Supply Ground pin for internal circuitry. 12 VDD (Pin 12) Power Supply Positive power supply input for the IC. 13 VDD (Pin 13) Power Supply Positive power supply input for the IC. 14 CNVST (Pin 14) Input Control Convert start signal to trigger ADC conversion. 15 CS (Pin 15) Input Control Chip select pin for enabling the IC. 16 CLK (Pin 16) Input Control Clock input for controlling conversion timing. 17 RST (Pin 17) Input Control Reset input for the IC. 18 SDO (Pin 18) Output Serial Data Output for transferring ADC results. 19 SDI (Pin 19) Input Serial Data Input for configuration. 20 SCK (Pin 20) Input Serial Clock for data transfer and timing control. 21 OE (Pin 21) Control Output Enable pin for enabling or disabling output data. 22 INT (Pin 22) Output Interrupt output for signaling ADC ready status. 23 VSS (Pin 23) Power Supply Ground for analog circuitry. 24 VDD (Pin 24) Power Supply Positive supply for analog circuitry. 25 AIN8 (Pin 25) Input Analog Analog input channel 8 for measurement. 26 AIN9 (Pin 26) Input Analog Analog input channel 9 for measurement. 27 AIN10 (Pin 27) Input Analog Analog input channel 10 for measurement. 28 AIN11 (Pin 28) Input Analog Analog input channel 11 for measurement. FAQ for LTC1859IG#PBF:Here are some common questions about the LTC1859IG#PBF, along with their detailed answers.
1. What is the function of the REF pin in LTC1859IG#PBF?
The REF pin (Pin 10) is used to provide a reference voltage for the ADC. The accuracy of the ADC conversion is dependent on this reference.2. How many analog input channels does the LTC1859IG#PBF have?
The LTC1859IG#PBF has 12 analog input channels (AIN0 to AIN11), which are used for different analog measurements.3. What is the purpose of the CNVST pin?
The CNVST pin (Pin 14) is the Convert Start input. It triggers the start of the ADC conversion when a falling edge is applied to this pin.4. How does the CLK pin work?
The CLK pin (Pin 16) is used to provide the clock signal that controls the timing of the ADC conversion.5. What happens when the CS pin is asserted low?
When the CS pin (Pin 15) is asserted low, the LTC1859IG#PBF is enabled for communication, and it can receive control signals.6. How is the SDO pin used?
The SDO pin (Pin 18) is the Serial Data Output, used to transfer the results of the ADC conversion to a microcontroller or other digital device.7. Can the LTC1859IG#PBF be used in single-ended mode?
Yes, the LTC1859IG#PBF can be used in single-ended mode where each input channel is referenced to ground.8. What is the role of the RST pin?
The RST pin (Pin 17) is used to reset the chip, clearing any internal registers or settings to their default state.9. How do you configure the data transfer in the LTC1859IG#PBF?
Data is transferred using the SDI (Pin 19) for input and SDO (Pin 18) for output, along with the SCK (Pin 20) to synchronize data transfer.10. What is the function of the OE pin?
The OE pin (Pin 21) is used to enable or disable the output of data from the LTC1859IG#PBF.11. What is the purpose of the INT pin?
The INT pin (Pin 22) is an interrupt output that signals when the ADC conversion is complete and ready to output data.12. How does the LTC1859IG#PBF handle differential input signals?
The LTC1859IG#PBF can be used in differential mode for more precise measurements by applying a differential signal between two input channels.13. What is the input voltage range for the AIN pins?
The voltage range for the AIN pins (Pins 2 to 9) should be within the reference voltage range, typically 0 to V_REF.14. What is the recommended reference voltage for optimal performance?
The reference voltage (Pin 10) should be stable and within the recommended range, typically 2.5V to 5V for optimal performance.15. How do you power the LTC1859IG#PBF?
The LTC1859IG#PBF is powered by VDD (Pin 12 and Pin 13) and grounded through V_SS (Pins 1 and 23).16. Can the LTC1859IG#PBF be used in low power applications?
Yes, the LTC1859IG#PBF can be used in low power applications by configuring the device in a low power mode when not converting.17. What is the maximum sampling rate of the LTC1859IG#PBF?
The LTC1859IG#PBF has a maximum sampling rate of 200ksps (kilo-samples per second).18. What is the data resolution of the LTC1859IG#PBF?
The LTC1859IG#PBF provides a 16-bit resolution, which allows for high precision in analog-to-digital conversion.19. Can the LTC1859IG#PBF operate in a temperature range?
Yes, the LTC1859IG#PBF operates within a temperature range of -40°C to 85°C.20. How do you perform a reset on the LTC1859IG#PBF?
A reset is performed by applying a low signal to the RST pin (Pin 17), which resets the chip to its default state.This information should provide you with a comprehensive overview of the LTC1859IG#PBF, its pin functions, packaging details, and typical usage instructions. Let me know if you need further details or clarifications!