Overview
The AD8370ARE-REEL7, produced by Analog Devices Inc., is a high-performance, digitally controlled variable gain amplifier (VGA) designed for use in intermediate frequency (IF) applications within communication infrastructure equipment. This device offers precision gain control, high linearity, and low noise figure, making it suitable for modern receiver designs. The AD8370 operates over a wide frequency range from LF to 750 MHz and is fabricated on Analog Devices' high-speed XFCB process.
Key Specifications
| Parameter | Value |
|---|---|
| Frequency Range | LF to 750 MHz |
| Gain Range | High Gain Mode: 6 dB to 34 dB Low Gain Mode: -11 dB to +17 dB |
| Input Impedance | 200 Ω differential |
| Output Impedance | 100 Ω differential |
| Noise Figure | 7 dB @ maximum gain |
| Two-tone IP3 | 35 dBm @ 70 MHz |
| Bandwidth | -3 dB bandwidth of 750 MHz |
| Supply Voltage | Single 3 V to 5 V |
| Operating Temperature | -40°C to +85°C |
| Package | 16-lead TSSOP with exposed pad |
| Quiescent Current | 78 mA (typical) |
Key Features
- Precision gain control through a serial 8-bit digital interface
- High linearity and low noise figure
- Wide input dynamic range with two gain modes (high and low)
- Power-down feature with less than 4 mA current consumption
- Excellent input to output isolation in power-down mode
- Compact, thermally enhanced 16-lead TSSOP package
Applications
- Differential ADC drivers
- IF sampling receivers
- RF/IF gain stages
- Cable and video applications
- SAW filter interfacing
- Single-ended-to-differential conversion
- Digital receiver AGC circuits for GSM, CDMA2000, W-CDMA cellular base stations
Q & A
- What is the frequency range of the AD8370?
The AD8370 operates from LF to 750 MHz. - What are the gain ranges of the AD8370?
The AD8370 has two gain ranges: High Gain Mode (6 dB to 34 dB) and Low Gain Mode (-11 dB to +17 dB). - What is the input impedance of the AD8370?
The input impedance is 200 Ω differential. - What is the noise figure of the AD8370 at maximum gain?
The noise figure is 7 dB at maximum gain. - What is the two-tone IP3 of the AD8370 at 70 MHz?
The two-tone IP3 is 35 dBm at 70 MHz. - What is the bandwidth of the AD8370?
The -3 dB bandwidth is 750 MHz. - What is the supply voltage range for the AD8370?
The AD8370 operates on a single 3 V to 5 V supply. - What is the operating temperature range of the AD8370?
The operating temperature range is -40°C to +85°C. - What package type is the AD8370 available in?
The AD8370 is available in a 16-lead TSSOP package with an exposed pad. - What is the quiescent current of the AD8370?
The quiescent current is typically 78 mA.
