The AD7450 is a 12-bit, high-speed, low power, successive approximation ADC with a 1 MSPS conversion rate. It can be applied to transducer interface, battery-powered systems, data acquisition systems, portable instrumentation, motor control and communications.
The AD7450 is a 12‑bit successive‑approximation ADC with a fully differential analog input. It operates from a single 3 V or 5 V supply and provides throughput rates of up to 1 MSPS (5 V) or 833 kSPS (3 V) while consuming only a few milliwatts of power. The device includes a low‑noise track‑and‑hold amplifier, flexible serial‑clock speed management, and a power‑down mode for energy‑efficient operation.
Typical applications include transducer interfaces, battery‑powered systems, data‑acquisition equipment, portable instrumentation, motor control, and communications. The datasheet details pin configurations, timing diagrams, absolute maximum ratings, and layout recommendations to help designers integrate the AD7450 into their circuits.
| Resolution | 12 Bits |
|---|---|
| Maximum Throughput Rate | 1 MSPS (5 V) / 833 kSPS (3 V) |
| Power Consumption at 833 kSPS, 3 V | 3.75 mW max |
| Input Voltage Range | Vpp = 3 V to 5 V |
| Aperture Delay | 10 ns typ |
| Input Capacitance (Track) | 20 pF typ |
| Output High Voltage (Vpp = 5 V) | 2.8 V min |
| Package | 8‑Lead SOIC |
The AD7450 can operate at up to 1 MSPS when powered from a 5 V supply, or 833 kSPS with a 3 V supply.
It consumes a maximum of 3.75 mW under those conditions.
The device features a fully differential analog input.
A capacitor of at least 0.1 µF should be placed between VREF and ground.