AD7893ANZ-2

Overview

The AD7893ANZ-2 is a 12-bit successive approximation analog-to-digital converter (ADC) fabricated in LC2MOS technology. It operates from a single +5 V supply and consumes 25 mW typical power. The device features an on-chip track/hold amplifier, internal clock, and high-speed serial interface. It accepts a unipolar input range of 0 V to +2.5 V and requires an external +2.5 V reference. Key specifications include a maximum conversion time of 6 μs, a throughput rate up to 117 kHz, and a signal-to-noise ratio of 70 dB. Relative accuracy is ±1 LSB, with differential nonlinearity of ±1 LSB and integral nonlinearity of ±1 LSB.

Feature Summary

• Integrates a 12-bit ADC, track/hold amplifier, and control logic within an 8-pin package for space efficiency.
• Operates from a single +5 V supply with low power consumption suitable for portable applications.
• Utilizes a two-wire serial interface consisting of SCLK and SDATA lines for simplified microcontroller connection.

Applications

• Battery-powered instrumentation systems
• Portable data acquisition devices
• Industrial process control monitoring

Procurement Notes

Verify the specific suffix 'ANZ-2' against the manufacturer's current ordering guide to confirm the package type, temperature range, and input voltage scaling. Ensure the external reference voltage matches the required +2.5 V specification for proper operation. Check for RoHS compliance status if required by your manufacturing standards.

Selection Notes

Select this component when a single-channel, 12-bit resolution is required with a 0 V to +2.5 V input range. It is appropriate for designs constrained by board space due to the 8-pin packaging. Consider the 6 μs conversion time and 117 kHz throughput limits when designing the system timing. Ensure the application can accommodate the need for an external +2.5 V reference source.

Part Context

The AD7893 belongs to a family of fast 12-bit ADCs available in various input ranges and packages. The 'A' designation indicates a commercial temperature range of -40°C to +85°C. The 'N' suffix denotes an 8-pin plastic DIP package, while 'R' would indicate SOIC. The '-2' suffix specifies the 0 V to +2.5 V unipolar input version.

Replacement Considerations

Direct pin-compatible replacements within the same series include the AD7893BNZ-2 for improved linearity or the AD7893ARZ-2 for surface mount assembly. Verify that any substitute maintains the 0 V to +2.5 V input range and 12-bit resolution requirements.