Overview
The AD8369ARUZ-REEL7, produced by Analog Devices Inc., is a high-performance digitally controlled variable gain amplifier (VGA). This component is designed for use across a wide frequency range, from low frequencies up to a –3 dB frequency of 600 MHz. It is part of the X-AMP® series and is known for its precise gain control and robust performance characteristics.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Frequency Range | - | - | - | 600 MHz | - |
| Voltage Gain Span | - | - | - | 45 dB | - |
| Maximum Gain | All bits high (1 1 1 1) | - | - | 40 dB | - |
| Minimum Gain | All bits low (0 0 0 0) | - | - | -5 dB | - |
| Gain Flatness | Within ±20 MHz of 380 MHz | - | ±0.15 dB | - | - |
| Noise Figure | Frequency = 380 MHz | - | 7.8 dB | - | - |
| Output IP3 | f1 = 379.55 MHz, f2 = 380.45 MHz | - | +8.5 dBm | - | - |
| Supply Voltage | - | 3.0 V | - | 5.5 V | - |
| Quiescent Current | At 5 V | - | 37 mA | - | - |
| Power-Down Current | - | - | <1 mA | - | - |
| Operating Temperature | - | - | - | 85 °C | - |
Key Features
- Digitally controlled variable gain in 3 dB steps from –5 dB to +40 dB (RL = 1 kΩ) and –10 dB to +35 dB (RL = 200 Ω).
- Less than 0.2 dB flatness over a ±20 MHz bandwidth up to 380 MHz.
- 4-bit parallel or 3-wire serial interface for digital control.
- Differential 200 Ω input and output impedance.
- Single 3.0 V–5.5 V supply voltage.
- Low power-down current of less than 1 mA.
- Internally biased, balanced differential input that should be ac-coupled.
Applications
- Cellular/PCS Base Stations.
- IF Sampling Receivers.
- Fixed Wireless Access.
- Wireline Modems.
- Instrumentation).
Q & A
- What is the frequency range of the AD8369?
The AD8369 operates from low frequencies up to a –3 dB frequency of 600 MHz.
- What is the gain span of the AD8369?
The voltage gain span is 45 dB, ranging from –5 dB to +40 dB (RL = 1 kΩ) and –10 dB to +35 dB (RL = 200 Ω)).
- How is the gain controlled in the AD8369?
The gain is controlled digitally using either a 4-bit parallel or a 3-wire serial interface).
- What is the input and output impedance of the AD8369?
The input and output impedance is differential 200 Ω).
- What is the supply voltage range for the AD8369?
The supply voltage range is from 3.0 V to 5.5 V).
- How much current does the AD8369 draw in power-down mode?
In power-down mode, the current is less than 1 mA).
- What are some typical applications of the AD8369?
Typical applications include cellular/PCS base stations, IF sampling receivers, fixed wireless access, wireline modems, and instrumentation).
- What is the maximum operating temperature of the AD8369?
The maximum operating temperature is 85 °C).
- How does the AD8369 handle overdrive recovery?
The AD8369 has a rapid overdrive recovery, as shown in its pulse response characteristics).
- Can the AD8369 be powered on or off using a logic level?
Yes, the AD8369 can be powered on or off by applying a logic level to the PWUP pin).
