Part A
AD8367ARUZ-RL7
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5988 PCS
- Package
- TSSOP-14
- Series
- Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps
Replacement verdict
Compatible functional replacement candidate
The AD8369ARUZ and AD8367ARUZ-RL7 are both digitally controlled variable gain amplifiers from Analog Devices in the same TSSOP-20 package, sharing a similar broadband signal-chain role. However, they differ in gain range, supply voltage, and control interface, so the AD8367ARUZ-RL7 is a functional replacement candidate only after validating gain slope, supply, and control-logic compatibility in the target design.
Gain Range
Validation required
Supply Voltage
Validation required
Package Type
High match
Control Interface
Validation required
Parts at a glance
Part B
AD8369ARUZ
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4576 PCS
- Package
- TSSOP-16
- Series
- Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD8369ARUZ | AD8367ARUZ-RL7 | Why it matters |
|---|---|---|---|
| Function Type | Digitally controlled variable gain amplifier (VGA) | Analog controlled variable gain amplifier (VGA) | Determines the control interface: digital (SPI/parallel) vs analog control voltage, which affects system architecture and substitutability. |
| Frequency Range | LF to 600 MHz | LF to 500 MHz | Defines the operating bandwidth; the AD8369 extends usable range slightly higher, affecting suitability for higher-frequency designs. |
| Gain Control Range | -10 dB to +35 dB (45 dB range) | -2.5 dB to +42.5 dB (45 dB range) | Both offer 45 dB span but different endpoints, affecting dynamic range placement and signal chain headroom. |
| Control Interface | 3-wire SPI / parallel digital (4-bit) | Analog control voltage (0 to 1 V) | Digital vs analog gain control changes how the part is driven; not directly interchangeable without interface redesign. |
| Gain Step / Slope | 3 dB per digital step | 20 mV/dB analog slope | Determines gain resolution and control linearity; affects calibration and loop control design. |
| Output IP3 (OIP3) | Approx. 20 dBm at 70 MHz | Approx. 20 dBm at 70 MHz | Linearity metric affecting distortion performance in the signal chain; similar values ease substitution. |
| Noise Figure | Approx. 7 dB at max gain | Approx. 7.5 dB at max gain | Noise figure impacts receiver sensitivity; small differences may affect link budget margins. |
| Supply Voltage | 5 V single supply | 5 V single supply | Power supply compatibility is essential for drop-in replacement in existing boards. |
| Package | 16-lead TSSOP | 14-lead TSSOP | Different pin counts and footprints prevent direct PCB drop-in substitution without layout changes. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Industrial temperature range compatibility ensures both parts suit the same environmental conditions. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD8367ARUZ-RL7 | AD8369ARUZ |
|---|---|---|
| Series | X-AMP® | X-AMP® |
| Part Status | Active | Active |
| Amplifier Type | Variable Gain | Variable Gain |
| Number of Circuits | 1 | 1 |
| -3 dB Bandwidth | 500 MHz | 600 MHz |
| Current - Input Bias | 27 µA | 160 µA |
| Supply Current | 26mA | 37mA |
| Voltage - Supply Span(Min) | 2.7 V | 3 V |
| Voltage - Supply Span(Max) | 5.5 V | 5.5 V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
| Slew Rate | - | 1200V/µs |
Frequently asked questions
What are the primary functional differences between the AD8369ARUZ and AD8367ARUZ-RL7?
The AD8369ARUZ is a digitally controlled variable gain amplifier (VGA) with a gain range of -5 dB to +40 dB, controlled via a 4-bit parallel interface, and operates from a single 5 V supply. The AD8367ARUZ-RL7 is an analog-controlled VGA with a gain range of -2.5 dB to +42.5 dB, controlled by an analog voltage, and operates from a single 5 V supply. The AD8367ARUZ-RL7 is supplied in tape and reel packaging (RL7 suffix), while the AD8369ARUZ is supplied in tube packaging.
Are the AD8369ARUZ and AD8367ARUZ-RL7 pin-compatible?
Both devices are offered in a 16-lead TSSOP package (RU suffix), but they are not pin-compatible. The AD8369ARUZ uses a 4-bit parallel digital gain control interface, while the AD8367ARUZ-RL7 uses an analog gain control pin. Pin functions and external component requirements differ, so the PCB layout must be designed specifically for each device.
What is the gain control interface for each device?
The AD8369ARUZ uses a 4-bit parallel digital control interface (pins D0–D3) to select gain in discrete steps across its -5 dB to +40 dB range. The AD8367ARUZ-RL7 uses a continuous analog control voltage (GAIN pin) to set gain across its -2.5 dB to +42.5 dB range.
What are the operating frequency ranges of the AD8369ARUZ and AD8367ARUZ-RL7?
Both the AD8369ARUZ and AD8367ARUZ-RL7 are specified for operation from DC to 1 GHz, making them suitable for intermediate frequency (IF) and RF signal chain applications in that band.
What supply voltage and power consumption do these devices require?
Both the AD8369ARUZ and AD8367ARUZ-RL7 operate from a single 5 V supply. The AD8369ARUZ typically draws approximately 22 mA, while the AD8367ARUZ-RL7 typically draws approximately 26 mA. Designers should verify exact quiescent current from the respective manufacturer datasheets for their operating conditions.
Which device is better suited for automatic gain control (AGC) loops?
The AD8367ARUZ-RL7 is generally preferred for analog AGC loops because its continuous analog gain control voltage allows smooth, continuous gain adjustment. The AD8369ARUZ, with its 4-bit digital control, provides discrete gain steps and is better suited to digitally controlled gain applications where stepwise gain setting is acceptable.
What packaging differences exist between the AD8369ARUZ and AD8367ARUZ-RL7?
Both devices are housed in a 16-lead TSSOP package. The AD8369ARUZ is supplied in tube packaging, while the AD8367ARUZ-RL7 is supplied in tape and reel packaging (indicated by the RL7 suffix), which is typically used for automated high-volume assembly lines.
Can the AD8369ARUZ and AD8367ARUZ-RL7 be used interchangeably in an existing design?
No. Despite sharing the same package footprint and supply voltage, the differing gain control interfaces (digital parallel versus analog), gain ranges, and pin functions prevent direct interchangeability. A redesign of the gain control circuitry and PCB layout would be required to substitute one for the other.