Overview
The AD8348ARU is a broadband quadrature demodulator produced by Analog Devices Inc. This integrated circuit is designed for use in communications receivers, performing quadrature demodulation from intermediate frequency (IF) directly to baseband frequencies. It features an integrated IF amplifier, variable gain amplifier (VGA), and baseband amplifiers, making it suitable for various communication systems.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| LO Frequency | 100 MHz | 2 GHz | |||
| RF Frequency | 50 MHz | 1 GHz | |||
| P1dB | -22 dBm | ||||
| Gain | 25.5 dB | ||||
| Operating Temperature Range | -40°C | +85°C | |||
| Supply Voltage | 2.7 V | 5 V | 5.5 V | ||
| Supply Current (Enabled) | VS = 5 V, VENBL = 5 V | 38 mA | 48 mA | 58 mA | |
| Supply Current (Standby) | VS = 5 V, VENBL = 0 V | 75 μA | |||
| Package Type | 28-Lead TSSOP |
Key Features
- Broadband quadrature demodulation from IF to baseband frequencies.
- Integrated IF amplifier, variable gain amplifier (VGA), and baseband amplifiers.
- Operates over a wide frequency range: LO frequency from 100 MHz to 2 GHz and RF frequency from 50 MHz to 1 GHz.
- High gain of 25.5 dB and P1dB of -22 dBm).
- Low noise figure and high linearity).
- Baseband amplifiers designed to interface directly with dual-channel ADCs).
- Power-up and power-down control with low standby current).
Applications
- Communications receivers, including cellular and baseband circuits).
- Wireless communication systems requiring quadrature demodulation).
- Systems needing integrated IF and baseband amplification).
- Applications requiring high gain and low noise figure in the signal chain).
Q & A
- What is the primary function of the AD8348ARU?
The AD8348ARU is a broadband quadrature demodulator that performs quadrature demodulation from intermediate frequency (IF) directly to baseband frequencies).
- What is the operating frequency range of the AD8348ARU?
The LO frequency range is from 100 MHz to 2 GHz, and the RF frequency range is from 50 MHz to 1 GHz).
- What type of package does the AD8348ARU come in?
The AD8348ARU comes in a 28-Lead Thin Shrink Small Outline Package (TSSOP)).
- What are the key integrated components of the AD8348ARU?
The AD8348ARU includes an integrated IF amplifier, variable gain amplifier (VGA), and baseband amplifiers).
- What is the typical gain of the AD8348ARU?
The typical gain of the AD8348ARU is 25.5 dB).
- What is the P1dB of the AD8348ARU?
The P1dB of the AD8348ARU is -22 dBm).
- What is the operating temperature range of the AD8348ARU?
The operating temperature range is from -40°C to +85°C).
- How does the power-up and power-down control work on the AD8348ARU?
The AD8348ARU has a power-up and power-down control with a low standby current, controlled by the ENBL pin).
- What is the typical supply current of the AD8348ARU in enabled mode?
The typical supply current in enabled mode is 48 mA at 5 V supply voltage).
- What is the standby current of the AD8348ARU?
The standby current is 75 μA when the ENBL pin is set to low).
