ADV7127KRZ140

Digital To Analog Converters Overview

The ADV7127KRZ140 is a high-speed, monolithic CMOS digital-to-analog converter (DAC) fabricated by Analog Devices Inc. It features a 10-bit resolution and supports a maximum throughput rate of 240 MSPS. The device operates on a single 5 V or 3.3 V power supply and includes an internal voltage reference circuit. It provides complementary analog current outputs capable of driving doubly terminated 75 Ω loads directly. The component utilizes a standard TTL-compatible input interface for data latching on the rising edge of the clock signal. It is housed in a 24-lead thin shrink small outline package (TSSOP) and is rated for industrial operating temperatures ranging from −40°C to +85°C.

Digital To Analog Converters Feature Summary

• 240 MSPS throughput with guaranteed monotonicity to 10 bits
• RS-343A/RS-170 compatible complementary current outputs
• Internal voltage reference and low power standby/power-down modes
• TTL-compatible digital inputs and single 5 V or 3.3 V supply operation

Digital To Analog Converters Applications

• Digital video systems (e.g., 1600 × 1200 at 100 Hz)
• High resolution color graphics
• Video signal reconstruction
• Direct digital synthesis (DDS)

Digital To Analog Converters Procurement Notes

Verify the specific grade suffix 'K' corresponds to the required temperature range and performance specifications against the official Analog Devices ordering guide. Confirm that the 'RZ' suffix indicates the correct TSSOP-24 packaging variant. Ensure compatibility with system voltage requirements (3.3 V vs. 5 V) as electrical characteristics vary between supply rails.

Digital To Analog Converters Selection Notes

Select this component when a single-channel, high-speed 10-bit DAC is required for video or DDS applications. The device supports both 3.3 V and 5 V logic interfaces via TTL-compatible inputs. Designers must account for the pipeline delay of one clock cycle and ensure proper termination of the differential current outputs for RS-343A or RS-170 standards. PCB layout guidelines emphasize separate ground planes to minimize noise.

Digital To Analog Converters Part Context

The ADV7127 belongs to the Analog Devices family of high-speed video DACs. It is functionally similar to the ADV7123 but offers a single channel instead of triple channels. The device is designed for applications requiring precise grayscale conversion and high bandwidth, serving as a core component in digital video processing chains and instrumentation systems.

Digital To Analog Converters Replacement Considerations

Public confirmed substitute part numbers include ADV7127JRUZ240 and ADV7127KRUZ140. Verify pinout and electrical specifications match before substitution.

Digital To Analog Converters FAQ

What is the maximum clock frequency supported by the ADV7127?

The ADV7127 supports a maximum clock frequency of 240 MHz.

How is the full-scale output current adjusted?

The full-scale output current is adjusted using an external resistor (RSET) connected between the RSET pin and ground. The relationship is defined by IOUT (mA) = 7968 × VREF (V) / RSET (Ω).

Does the device require an external voltage reference?

No, the ADV7127 includes an on-board voltage reference circuit. However, it can be overdriven by an external 1.23 V reference if required.