Overview
The AD8369ARUZ, produced by Analog Devices Inc., is a high-performance, digitally controlled variable gain amplifier (VGA). This device is designed for use in various applications, particularly at intermediate frequencies (IF) within cellular receivers. It features a 4-bit digitally controlled gain interface, configurable for either parallel or 3-wire serial control, allowing for a gain control range of 45 dB in 3 dB increments. The AD8369 is fabricated on an advanced silicon bipolar process and operates on a single 3 V to 5.5 V supply, making it versatile and efficient for different operational requirements.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Frequency Range (3 dB Bandwidth) | - | - | 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 | At maximum gain | - | 7.8 | - | dB |
| Output IP3 | f1 = 379.55 MHz, f2 = 380.45 MHz | - | +8.5 | - | dBm |
| Supply Voltage | - | 3 | - | 5.5 | V |
| Supply Current | At 5 V | - | 37 | - | mA |
| Operating Temperature Range | - | -40 | - | 85 | °C |
| Package | - | - | - | - | 16-Lead TSSOP |
Key Features
- Digitally controlled variable gain in 3 dB steps over a 45 dB range
- 4-bit parallel or 3-wire serial interface for gain control
- Differential 200 Ω or 1 kΩ input and output impedance
- Single 3.0 V to 5.5 V supply operation
- Low power consumption: 37 mA at 5 V, <1 mA in power-down mode
- Excellent distortion performance: two-tone, third-order intermodulation distortion of –69 dBc at 70 MHz
- High gain stability and flatness: less than 0.2 dB over a +20 MHz bandwidth up to 380 MHz
- Available in a 16-lead TSSOP package with an industrial temperature range of –40°C to +85°C
Applications
- Cellular/PCS base stations
- IF sampling receivers
- Fixed wireless access
- Wireline modems
- Instrumentation
Q & A
- What is the gain control range of the AD8369ARUZ? The gain control range is 45 dB, adjustable in 3 dB increments.
- What are the supply voltage options for the AD8369ARUZ? The device operates on a single 3 V to 5.5 V supply.
- What is the typical supply current of the AD8369ARUZ at 5 V? The typical supply current is 37 mA at 5 V.
- What is the operating temperature range of the AD8369ARUZ? The operating temperature range is –40°C to +85°C.
- What is the package type of the AD8369ARUZ? The device is packaged in a 16-lead TSSOP.
- What are the key applications of the AD8369ARUZ? Key applications include cellular/PCS base stations, IF sampling receivers, fixed wireless access, wireline modems, and instrumentation.
- How is the gain control interface configured? The gain control interface can be configured for either 4-bit parallel or 3-wire serial control.
- What is the noise figure of the AD8369ARUZ at maximum gain? The noise figure is approximately 7.8 dB at maximum gain.
- What is the output IP3 of the AD8369ARUZ? The output IP3 is +8.5 dBm at 70 MHz.
- Does the AD8369ARUZ support power-down mode? Yes, the device supports power-down mode with a current consumption of less than 1 mA.
