Overview
The AD608ARZ, produced by Analog Devices Inc., is a low power, low distortion, and low noise mixer and logarithmic/limiting amplifier integrated circuit. It is designed as a complete, monolithic 3 V receiver IF subsystem. The device combines a doubly balanced Gilbert-cell mixer with a logarithmic/limiting amplifier, providing a high-speed received signal strength indicator (RSSI) output and a hard-limited output. It operates from a single 2.7 V to 5.5 V supply, making it suitable for various wireless and battery-powered applications.
Key Specifications
| Parameter | Value |
|---|---|
| Supply Voltage | 2.7 V to 5.5 V |
| Power Consumption | Typical 21 mW at 3 V |
| RF and LO Bandwidth | Exceed 500 MHz |
| IF Input Range | −75 dBm to +15 dBm |
| Conversion Gain | 24 dB (typical) |
| Third-Order Intercept | −5 dBm (nominal) |
| LO Drive Requirement | −16 dBm |
| Standby Power | 300 μW (typical) |
| Enable/Disable Time | 200 ns (typical) |
| Operating Temperature Range | −25°C to +85°C (2.7 V to 5.5 V), −40°C to +85°C (3.0 V to 5.5 V) |
| Package Type | 16-lead plastic SOIC |
Key Features
- Low power consumption with typical power level of 21 mW at 3 V.
- Low distortion and low noise mixer.
- Logarithmic/limiting amplifier with 80 dB dynamic range.
- High-speed RSSI output with loadable output voltage of 0.2 V to 1.8 V.
- Hard-limited output with voltage gain of more than 100 dB.
- CMOS-compatible power-down feature with 200 ns enable/disable time.
- On-board LO pre-amplifier requiring only −16 dBm of LO drive.
Applications
- PHS, GSM, TDMA, FM, and PM receivers.
- Battery-powered instrumentation.
- Base station RSSI measurements.
- Cellular radio applications.
Q & A
- What is the supply voltage range of the AD608ARZ?
The AD608ARZ operates from a single 2.7 V to 5.5 V supply. - What is the typical power consumption of the AD608ARZ at 3 V?
The typical power consumption is 21 mW at 3 V. - What is the bandwidth of the RF and LO inputs?
The RF and LO bandwidths both exceed 500 MHz. - What is the range of the IF input?
The IF input range is from −75 dBm to +15 dBm. - What is the conversion gain of the mixer?
The conversion gain is typically 24 dB. - What is the third-order intercept point of the mixer?
The third-order intercept point is nominally −5 dBm. - How much LO drive is required for the on-board LO pre-amplifier?
The on-board LO pre-amplifier requires only −16 dBm of LO drive. - What is the standby power consumption of the AD608ARZ?
The standby power consumption is typically 300 μW. - How long does it take to enable or disable the AD608ARZ?
The enable/disable time is typically 200 ns. - What is the operating temperature range of the AD608ARZ?
The operating temperature range is −25°C to +85°C (2.7 V to 5.5 V) and −40°C to +85°C (3.0 V to 5.5 V).
