Overview
The AD8366ACPZ-R7, produced by Analog Devices Inc., is a matched pair of fully differential, low noise, and low distortion, digitally programmable variable gain amplifiers (VGAs). This component is designed to offer flat frequency performance from DC to 70 MHz, independent of the gain code. It is particularly suited for applications requiring high dynamic range and low distortion, such as driving high-resolution analog-to-digital converters (ADCs).
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Bandwidth (3 dB; all gain codes) | - | 600 | - | MHz |
| Bandwidth (1 dB; all gain codes) | - | 200 | - | MHz |
| Slew Rate (Maximum gain) | - | 1100 | - | V/µs |
| Slew Rate (Minimum gain) | - | 1500 | - | V/µs |
| Linear Input Swing (At minimum gain, AV = 4.5 dB, 1 dB gain compression) | - | 3.6 | - | V p-p |
| Differential Input Impedance | - | 217 | - | Ω |
| Minimum Input Common-Mode Voltage | 1.5 | - | - | V |
| Maximum Input Common-Mode Voltage | - | VPOS/2 + 0.075 | - | V |
| Supply Voltage | 4.75 | 5 | 5.25 | V |
| Quiescent Current | - | 180 | - | mA |
| Operating Temperature Range | -40 | - | 85 | °C |
Key Features
- Digitally programmable variable gain amplifiers with a gain range of 4.5 dB to 20.25 dB in steps of 0.25 dB.
- Flat frequency performance from DC to 70 MHz, independent of gain code.
- Excellent spurious-free dynamic range, suitable for driving high-resolution ADCs.
- Low noise figure (NF) of 11.4 dB at maximum gain at 10 MHz.
- Low distortion: HD2/HD3 better than −90 dBc for 2 V p-p output at 10 MHz into 200 Ω.
- Differential input and output with adjustable output common-mode voltage.
- DC offset compensation loop to eliminate dc offsets from prior stages.
- Serial or parallel mode gain control.
- Power-down feature with low current consumption in disabled state.
- Single 5 V supply operation.
- Fabricated using advanced silicon-germanium bipolar process.
- Available in a 32-lead exposed paddle LFCSP package.
Applications
- Baseband I/Q receivers.
- Diversity receivers.
- Wideband ADC drivers.
Q & A
- What is the gain range of the AD8366?
The gain range of the AD8366 is from 4.5 dB to 20.25 dB in steps of 0.25 dB.
- What is the frequency range over which the AD8366 maintains flat performance?
The AD8366 maintains flat frequency performance from DC to 70 MHz, independent of the gain code.
- What is the noise figure (NF) at maximum gain?
The noise figure (NF) at maximum gain is 11.4 dB at 10 MHz.
- What is the distortion performance of the AD8366?
The AD8366 has HD2/HD3 better than −90 dBc for 2 V p-p output at 10 MHz into 200 Ω.
- Can the output common-mode voltage be adjusted?
Yes, the output common-mode voltage can be programmed via the VCMA and VCMB pins.
- Does the AD8366 have a built-in dc offset compensation loop?
Yes, the AD8366 has a built-in dc offset compensation loop to eliminate dc offsets from prior stages.
- What are the supply voltage and current requirements for the AD8366?
The AD8366 operates from a 4.75 V to 5.25 V supply and consumes typically 180 mA. When disabled, it consumes roughly 3 mA.
- What is the operating temperature range of the AD8366?
The operating temperature range is from −40°C to +85°C.
- In what package is the AD8366 available?
The AD8366 is available in a 32-lead exposed paddle LFCSP package.
- What are some typical applications of the AD8366?
Typical applications include baseband I/Q receivers, diversity receivers, and wideband ADC drivers.
