Part A
AD8361ARM
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 6375 PCS
- Package
- TSSOP-8
- Series
- Détecteur RF
Replacement verdict
Not a drop-in replacement
The AD8367ARUZ-RL7 and AD8361ARM are not drop-in replacements for one another. The AD8367ARUZ-RL7 is a variable gain amplifier with analog gain control, while the AD8361ARM is a fixed-gain RMS-responding power detector; their core functions, output types, and package footprints differ, so substituting one for the other requires circuit redesign and validation.
Different function class
Different output type
Different package footprint
Different gain control
Parts at a glance
Part B
AD8367ARUZ-RL7
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 5988 PCS
- Package
- TSSOP-14
- Series
- Amplificateurs linéaires - instruments, amplificateurs opérationnels, amplificateurs tampons
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD8367ARUZ-RL7 | AD8361ARM | Why it matters |
|---|---|---|---|
| Function | Variable gain amplifier (VGA) with integrated rms detector | RF rms power detector | Defines the core signal-chain role; a VGA amplifies/attenuates while a detector only measures power, so they are not direct substitutes. |
| Frequency range | LF to 500 MHz | LF to 2.5 GHz | Determines the operating band; the detector covers much higher frequencies than the VGA. |
| Gain / conversion range | -2.5 dB to +42.5 dB (45 dB gain range) | Fixed conversion gain (no variable gain) | The VGA provides adjustable gain for AGC loops, whereas the detector has fixed scaling and cannot amplify the signal. |
| Output type | Amplified RF output plus rms-detector output | Linear DC voltage proportional to rms input power | Dictates how the device interfaces to the next stage; one delivers an RF signal, the other a baseband DC measurement. |
| Input frequency response / bandwidth | 500 MHz -3 dB bandwidth | 2.5 GHz input bandwidth | Sets the maximum signal frequency each part can handle reliably in a design. |
| Supply voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Both share the same supply window, easing power-rail compatibility in mixed designs. |
| Package | 16-lead TSSOP | 8-lead MSOP | Footprint and pin count differ, so board layout and assembly are not interchangeable. |
| Operating temperature range | -40 °C to +85 °C | -40 °C to +85 °C | Identical industrial temperature ratings allow use in the same environmental conditions. |
| Primary application | AGC amplifiers, gain control in receivers, rms power measurement | RF power measurement, transmitter/receiver level detection | Clarifies intended use; the VGA suits signal-path gain control while the detector suits power monitoring. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD8361ARM | AD8367ARUZ-RL7 |
|---|---|---|
| Part Status | Obsolete | Active |
| Frequency | 2.5GHz | - |
| RF Type | Cellular, CDMA, W-CDMA | - |
| Input Range | 0 ~ 700mV | - |
| Accuracy | ±0.25dB | - |
| Voltage - Supply | 2.7V ~ 5.5V | - |
| Supply Current | 1.1 mA | 26mA |
| Mounting Type | Surface Mount | Surface Mount |
| Series | - | X-AMP® |
| Amplifier Type | - | Variable Gain |
| Number of Circuits | - | 1 |
| -3 dB Bandwidth | - | 500 MHz |
| Current - Input Bias | - | 27 µA |
| Voltage - Supply Span(Min) | - | 2.7 V |
| Voltage - Supply Span(Max) | - | 5.5 V |
| Operating Temperature | - | -40°C ~ 85°C |
Frequently asked questions
What are the primary functional differences between the AD8367ARUZ-RL7 and the AD8361ARM?
The AD8367ARUZ-RL7 is an analog-controlled variable gain amplifier (VGA) with a 45 dB gain range and an integrated square-law detector, operating from DC to 500 MHz. The AD8361ARM is an RMS-responding power detector (RMS-to-DC converter) intended for RF power measurement up to 2.5 GHz. In short, the AD8367 is a signal-path VGA with detection capability, while the AD8361 is a dedicated power-measurement detector.
Do the AD8367ARUZ-RL7 and AD8361ARM use the same package and pinout?
No. The AD8367ARUZ-RL7 is supplied in a 14-lead TSSOP package (RU suffix), while the AD8361ARM is supplied in an 8-lead MSOP package (RM suffix). The package footprints, pin counts, and pin functions differ, so they are not drop-in replacements for one another.
What are the operating frequency ranges of these two devices?
The AD8367ARUZ-RL7 is specified for operation from DC to 500 MHz. The AD8361ARM is specified for operation up to 2.5 GHz. The AD8361 therefore covers a substantially higher frequency range, consistent with its role as an RF RMS power detector.
How do the gain and detection functions differ between the AD8367ARUZ-RL7 and AD8361ARM?
The AD8367ARUZ-RL7 provides a voltage-controlled gain range of approximately 45 dB (from about -2.5 dB to +42.5 dB) and includes an on-chip square-law detector for AGC and RSSI functions. The AD8361ARM does not provide signal gain; it converts an RF input into a linear-in-voltage DC output proportional to the RMS value of the input signal.
What are the supply voltage requirements for the AD8367ARUZ-RL7 and AD8361ARM?
Both devices operate from a single 5 V supply. The AD8367ARUZ-RL7 is specified for a 5 V supply, and the AD8361ARM is also specified for 5 V operation (with a 2.7 V to 5.5 V range per the datasheet). Designers should confirm exact limits against the respective manufacturer datasheets.
Can the AD8361ARM be used as a substitute for the AD8367ARUZ-RL7 in a VGA signal path?
No. The AD8361ARM is an RMS power detector without a signal amplification path, so it cannot replace the AD8367ARUZ-RL7 in applications requiring variable gain amplification. The two parts serve different functions and are not functionally interchangeable.
Which device is better suited for RF power measurement in a transmit chain?
The AD8361ARM is the appropriate choice for RF power measurement because it is an RMS-responding detector covering up to 2.5 GHz. The AD8367ARUZ-RL7, while containing a detector, is primarily a VGA for the signal path and is specified only to 500 MHz.
Are both parts available in RoHS-compliant packaging?
Yes. The AD8367ARUZ-RL7 and AD8361ARM are both offered in RoHS-compliant package options per their manufacturer part numbering. The "Z" suffix on the AD8367ARUZ-RL7 denotes RoHS compliance; the AD8361ARM is likewise available in a RoHS-compliant MSOP package. Verify the specific ordering code against the manufacturer datasheet before finalizing a bill of materials.