The AD9243 is a complete 14-bit, 3 MSPS monolithic A/D converter that consumes only 110 mW of power from a single +5 V supply. It offers a 2.5 LSB integral nonlinearity error, a 0.6 LSB differential nonlinearity error, and a 0.36 LSB input referred noise. The AD9243 also integrates a sample-and-hold amplifier and voltage reference, and provides a signal-to-noise and distortion ratio of 79.0 dB and a spurious-free dynamic range of 91.0 dB. The AD9243 is available in a 44-lead MQFP package.
The AD9243 is a 14‑bit, 3 MSPS analog‑to‑digital converter from Analog Devices. It integrates a sample‑and‑hold amplifier, on‑chip voltage reference, and offers flexible single‑ended or differential inputs for imaging, communications, medical, and data‑acquisition applications. The device operates from a single +5 V supply and includes an out‑of‑range indicator.
The document lists electrical specifications, pin assignments, timing diagrams, thermal characteristics, and absolute maximum ratings. It also defines key performance terms such as INL, DNL, ENOB, and provides typical performance curves for SINAD, THD, and SFDR.
| Resolution | 14 Bits |
|---|---|
| Maximum Conversion Rate | 3 MHz |
| Power Consumption | 110 mW typ |
| Input Referred Noise (2.5 V reference) | 0.36 LSB rms typ |
| Differential Nonlinearity (DNL) | +0.6 LSB typ |
| Supply Voltage (AVDD, DVDD, DRVDD) | +5 V |
| Package | 44‑lead Metric Quad Flatpack (MQFP) |
The AD9243 consumes 110 mW typ (145 mW max).
With a 2.5 V reference the input referred noise is 0.36 LSB rms typ.
The OTR signal indicates an overflow condition that can be used with the most significant bit to determine low or high overflow.
The minimum clock period is 333 ns.