LTC2604CGN#TRPBF

Reference Type:	External
Base Part Number:	LTC2604
Supplier Device Package:	16-SSOP
Package / Case:	16-SSOP (0.154", 3.90mm Width)
Operating Temperature:	0°C ~ 70°C
Architecture:	--
INL/DNL (LSB):	±14, ±1 (Max)
Voltage - Supply, Digital:	2.5 V ~ 5.5 V
Voltage - Supply, Analog:	2.5 V ~ 5.5 V
Series:	--
Data Interface:	SPI
Differential Output:	No
Output Type:	Voltage - Buffered
Settling Time:	10µs (Typ)
Number of D/A Converters:	4
Number of Bits:	16
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Data Acquisition – Digital to Analog Converters (DAC)

The LTC2604CGN#TRPBF is an 8-bit single channel digital-to-analog converter (DAC) with an integrated voltage reference. It features an output rail-to-rail output range of 0V to VREF and a typical specific output error of 0.2%. The converter also has integrated current settling and temperature compensation, making it suitable for high accuracy signal conversion applications.

Application Field

The LTC2604CGN#TRPBF is widely used in a variety of industrial and medical applications. It is suited for use in precision signal-controlled systems such as programmable gain tilters, sound and image processing, sophisticated medical instruments and automated test systems. It brings flexibility and precise signal conversion to equipment such as audio players, audio amplifiers, monitors, computers, industrial controllers, temperature and motion control systems and other applications.

Working Principle

The LTC2604CGN#TRPBF works by converting a digital input signal, in the binary coded decimal (BCD) form into an analog voltage. It includes an 8-bit input register and DAC register that are activated by a low-power master clock or chip select signal. On activation, the DAC transfers the digital data stored in the 8-bit input register to the 8-bit DAC register, from which the internal resistor ladder generates an output voltage that’s proportional to the digital data. Rather than controlling the digital input bits individually, the LTC2604CGN#TRPBF uses the D-FlipFlop Values, the D-FlipFlop Nibble Values and the D-FlipFlop Bytes. The D-FlipFlop Values are 8-bits wide, with each bit representing an analog voltage. For example, a digital input value of 00001111 would yield an output voltage of 0.5*VREFP. The D-FlipFlop Nibbles are 4-bits wide, with each bit representing 1/16th of the total analog voltage range. The D-FlipFlop Bytes are 8-bits wide, and each Bit represents a 1/256th of the total analog voltage range. The LTC2604CGN#TRPBF also features an integrated voltage reference/shunt regulator. This ensures that the output voltage is always within a specified accuracy relative to the reference voltage. The integrated voltage reference also simplifies the circuit assembly, as the reference voltage is generated on board, rather than having to be supplied externally. Finally, the LTC2604CGN#TRPBF supports communication between the digital and analog components of the system, typically using Serial Peripheral Interface (SPI) Protocol. This enables the control of the digital signals and output values from an external source, eliminating the need for arduous manual adjustment of the digital input each time the output needs to be changed. This simplifies the operation of the circuit and minimizes the complexity of the programming side of the system.

Conclusion

The LTC2604CGN#TRPBF is a high accuracy 8-bit single channel digital-to-analog converter with an integrated voltage reference/shunt regulator. It is designed for precision signal-controlled systems and is suitable for a wide range of industrial and medical applications. The device brings flexibility and precise signal conversion to equipment such as audio players, amplifiers, monitors, computers and industrial controllers. Working principleley, the LTC2604CGN#TRPBF converts a digital input signal, in the binary coded decimal (BCD) form, into an analog voltage using 8-bit input registers and a DAC register that are activated by a low-power master clock or chip select signal. The device also features communication via serial peripheral interface (SPI) protocol, making it easy to control the output values from an external source.

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