Overview
The AD7477AARMZ-REEL7 is a 10-bit high-speed, low-power successive-approximation analog-to-digital converter (ADC) produced by Analog Devices Inc. This component is part of the AD7476A/AD7477A/AD7478A family, which includes 12-bit, 10-bit, and 8-bit ADCs, respectively. The AD7477A operates from a single 2.35 V to 5.25 V power supply and features throughput rates up to 1 MSPS. It is designed for applications requiring high speed and low power consumption, making it suitable for a variety of electronic systems.
Key Specifications
| Parameter | Value | Unit | Test Conditions/Comments |
|---|---|---|---|
| VDD | 2.35 V to 5.25 V | V | |
| Resolution | 10 Bits | ||
| Signal-to-Noise-and-Distortion (SINAD) | 61 dB min | dB | fIN = 100 kHz sine wave |
| Total Harmonic Distortion (THD) | -72 dB max | dB | fIN = 100 kHz sine wave |
| Peak Harmonic or Spurious Noise (SFDR) | -73 dB max | dB | fIN = 100 kHz sine wave |
| Aperture Delay | 10 ns typ | ns | |
| Aperture Jitter | 30 ps typ | ps | |
| Full Power Bandwidth | 13.5 MHz typ | MHz | At 3 dB |
| Integral Nonlinearity | ±0.5 LSB max | LSB | |
| Standby Current | 1 µA max | µA |
Key Features
- High throughput with low power consumption, achieving up to 1 MSPS conversion rate.
- Flexible power and serial clock speed management, allowing for adjustable conversion times.
- No pipeline delays, ensuring immediate data availability after conversion.
- High-speed serial interface compatible with SPI/QSPI/MICROWIRE/DSP.
- Low noise, wide bandwidth track-and-hold amplifier capable of handling input frequencies over 13 MHz.
- Internal reference from VDD, providing a dynamic input range of 0 V to VDD.
- Standby mode with a maximum current of 1 µA.
- Qualified for automotive applications.
Applications
- Battery-powered systems.
- Personal digital assistants.
- Medical instruments.
- Mobile communications.
- Instrumentation and control systems.
- Data acquisition systems.
- High-speed modems.
- Optical sensors.
Q & A
- What is the resolution of the AD7477A?
The AD7477A has a resolution of 10 bits.
- What is the operating voltage range of the AD7477A?
The AD7477A operates from a single 2.35 V to 5.25 V power supply.
- What is the maximum throughput rate of the AD7477A?
The AD7477A can achieve throughput rates up to 1 MSPS.
- Does the AD7477A have pipeline delays?
No, the AD7477A does not have pipeline delays.
- What type of serial interface does the AD7477A support?
The AD7477A supports high-speed serial interfaces compatible with SPI/QSPI/MICROWIRE/DSP.
- What is the standby current of the AD7477A?
The standby current of the AD7477A is 1 µA maximum.
- What is the full power bandwidth of the AD7477A?
The full power bandwidth of the AD7477A is 13.5 MHz typical at 3 dB.
- Is the AD7477A qualified for automotive applications?
Yes, the AD7477A is qualified for automotive applications.
- What is the aperture delay of the AD7477A?
The aperture delay of the AD7477A is 10 ns typical.
- What is the signal-to-noise-and-distortion (SINAD) of the AD7477A?
The SINAD of the AD7477A is 61 dB minimum at a 100 kHz input frequency.
