1. Device Overview

️· What it is: The AD9760 is a 12-bit current output Digital-to-Analog Converter (DAC).
️· Output: Current output (I OUTA and I OUTB – complementary).
️· Power Supply: Operates with analog supply voltages from +2.7V to +5.5V (AVDD, ACOM) and digital supplies (DVDD, DCOM) within the same range.
️· Control: Features a SLEEP pin for power-down.
️· Reference: Can use an internal 1.2V reference (requires REFLO tied to AVDD) or an external reference (REFLO tied to AVDD, REFIO used as input).
️· Applications: The datasheet implies use in applications requiring precise analog signals.

2. Pinout and Functions

Pin No.	Pin Name	Function
1	DB9	Most Significant Data Bit (MSB)
2-9	DB8-DB1	Data Bits 1-8
10	DB0	Least Significant Data Bit (LSB)
11-14, 25	NC	No Connection
15	SLEEP	Power-Down Control
16	REFLO	Reference Ground (when internal reference used) / Connection to AVDD to disable internal ref.
17	REFIO	Reference Input/Output (External Ref)
18	FS_ADJ	Full-Scale Current Output Adjust
19	COMP1	Bandwidth/Noise Reduction Node
20	ACOM	Analog Common
21	IOUTB	Complementary DAC Current Output
22	IOUTA	DAC Current Output
23	COMP2	Internal Bias Node for Switch Driver Circuitry
24	AVDD	Analog Supply Voltage
26	DCOM	Digital Common
27	DVDD	Digital Supply Voltage
28	CLOCK	Clock Input (data latched on positive edge)

3. Definitions of Specifications

This section lists important DAC performance characteristics:

️· Linearity Error (INL & DNL): Measures how closely the output matches a perfect straight line. DNL refers to the change in output per LSB.
️· Monotonicity: The output must increase or remain constant as the digital input increases.
️· Offset Error: The deviation of the output current from zero.
️· Gain Error: The difference between the actual and ideal output span.
️· Output Compliance Range: The acceptable voltage range at the output.
️· Temperature Drift: The change in performance with temperature.
️· Power Supply Rejection: How well the DAC's performance is unaffected by changes in the power supply voltages.
️· Settling Time: The time it takes for the output to reach a stable value.
️· Glitch Impulse: Undesired output transients.
️· Spurious-Free Dynamic Range (SFDR): The difference between the signal level and the spurious noise level.
️· Total Harmonic Distortion (THD): The level of harmonic distortion in the output signal.

4. Key Considerations / Notes

️· ESD Sensitivity: The device is sensitive to electrostatic discharge; proper precautions are required.
️· Capacitors: The document mentions the need for 0.1µF capacitors for certain connections (e.g., REFIO to ACOM when using the internal reference).
️· Test Setup: Figure 2 shows a basic AC characterization test setup, including connections to a spectrum analyzer.