The document describes the features and characteristics of the Octal LNA/VGA/AAF/14-Bit ADC and CW I/Q Demodulator AD9277. It includes 8 channels of LNA, VGA, AAF, ADC, and I/Q demodulator, with features such as low noise preamplifier, programmable gain, dual-mode active input impedance matching, attenuator range, linear-in-dB gain control, programmable antialiasing filter, and 14-bit ADC.
The AD9277 is an integrated circuit designed for low-cost, low-power, and small-size applications requiring high dynamic range. It contains eight channels, each featuring a variable gain amplifier (VGA) with a low noise preamplifier (LNA), an antialiasing filter (AAF), a 14-bit analog-to-digital converter (ADC), and an I/Q demodulator with programmable phase rotation. The device is optimized for dynamic performance and low power consumption in systems where package size is critical.
| ADC Resolution | 14 Bits |
|---|---|
| Sample Rate | 10 MSPS to 50 MSPS |
| Input-Referred Noise (LNA) | 0.75 nV/√Hz |
| Bandwidth | > 100 MHz |
| Package Type | 100-lead TQFP |
| Operating Temperature | -40°C to +85°C |
| Total Power Dissipation (TGC mode) | 1660 mW |
| Power-Down Dissipation | 5 mW |
The AD9277 is suitable for medical imaging/ultrasound and automotive radar applications.
The input-referred noise is typically 0.75 nV/√Hz at 5 MHz with a gain of 21.3 dB.
The variable gain amplifier (VGA) has an attenuator range from −42 dB to 0 dB.