AD8310ARMZ - 95dB Log Amp DC-440MHz | Analog Devices
料号： AD8310ARMZ ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $6.51 | $6.51 |
| 10 | $5.98 | $59.80 |
| 100 | $5.45 | $545.00 |
| 500 | $4.92 | $2,460.00 |
| 1,000 | $4.39 | $4,390.00 |
AD8310ARMZ 概述
A logarithmic amplifier is a specialized amplifier that produces an output voltage proportional to the logarithm of the input signal amplitude. This allows a wide dynamic range of input signals to be compressed into a manageable output range, which is essential for applications such as received signal strength indication (RSSI), power measurement, and level detection. The AD8310 uses a progressive compression (successive detection) architecture, which provides accurate logarithmic conversion over a wide frequency range.
Key features of the AD8310ARMZ include a 95 dB dynamic range, a logarithmic slope of 24 mV/dB, a logarithmic intercept of -88 dBm, and a fast voltage-mode output that can drive 25 mA loads. The device also features an enable pin (ENBL) for power-down control, and it operates over the industrial temperature range of -40°C to +85°C. The MSOP-8 package is compact and suitable for space-constrained designs.
The AD8310's architecture uses nine cascaded amplifier stages, each with a gain of 10 dB, followed by detectors. The detector outputs are summed and converted to a single-ended voltage, scaled at 2 µA/dB. This design provides excellent temperature stability and accuracy over the full dynamic range. The device is specified for operation from DC to 440 MHz, making it suitable for both baseband and IF applications.
Typical applications include RF power amplifier control, signal strength measurement, radar and communication systems, and test equipment. The AD8310ARMZ is particularly well-suited for use in cellular base stations, wireless infrastructure, and portable RF devices where accurate signal level monitoring is required.
When designing with the AD8310ARMZ, it is important to provide adequate decoupling on the supply pins and to consider the output loading, as the device can drive up to 25 mA. The enable pin can be used to reduce power consumption in battery-powered applications.
直接替换替代料： AD8310ARMZ ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： AD8310ARMZ （相同外形与封装尺寸） ——差异在于 Logarithmic Intercept, Package, Rise Time.
快速对比工具——选择替代料号进行并排对比：
AD8310ARM
✅ 直接替换✓ 有现货
$4.1 / 个
查看数据手册 →AD8310ARM-REEL
✅ 直接替换📋 参考替代料（不在目录中）
AD8310ARM-REEL7
✅ 直接替换📋 参考替代料（不在目录中）
AD8313ARM
✅ 直接替换📋 参考替代料（不在目录中）
AD8310ARMZ 最大额定值与电气特性
| Type | Logarithmic Amplifier |
| Number of Amplifiers | 1 |
| Dynamic Range | 95 dB |
| Frequency Range | DC to 440 MHz |
| Supply Voltage Range | 2.7 V to 5.5 V |
| 输出类型 | Voltage |
| Output Current | 25 mA |
| Slew Rate | 500 V/µs |
| Logarithmic Slope | 24 mV/dB |
| Logarithmic Intercept | -88 dBm |
| 上升时间 | 15 ns |
| 工作温度范围 | -40°C to +85°C |
| 封装 | 8-MSOP |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
AD8310ARMZ 引脚配置
| 引脚 1 | INP — Signal input |
| 引脚 2 | INM — Signal input (inverting) |
| 引脚 3 | GND — Ground |
| 引脚 4 | OUT — Logarithmic output |
| 引脚 5 | VPS — Positive supply |
| 引脚 6 | NC — No connect |
| 引脚 7 | ENBL — Enable (active high) |
| 引脚 8 | NC — No connect |
典型应用
AD8310ARMZ 适用于 6 应用s: RF Power Amplifier Control, Signal Strength Measurement (RSSI), Radar and Communication Systems, Test and Measurement Equipment, Wireless Infrastructure, Portable and Battery-Powered Devices.
RF Power Amplifier Control
The AD8310ARMZ is used in RF power amplifier control loops to provide accurate power detection and leveling. Its 95 dB dynamic range and fast response time enable precise power control over a wide range of input levels. The logarithmic output voltage is directly proportional to the power in dBm, simplifying the control loop design. The device's DC to 440 MHz frequency range covers most RF and IF frequencies, and its 25 mA output drive capability allows direct interfacing to power amplifier control circuits. The enable pin can be used to shut down the detector during transmit/receive switching, reducing power consumption.
推荐
Signal Strength Measurement (RSSI)
The AD8310ARMZ is ideal for received signal strength indication (RSSI) in communication systems. Its logarithmic transfer function provides a linear-in-dB output, allowing direct measurement of signal power over a 95 dB range. The device's fast rise time of 15 ns enables accurate measurement of burst signals, such as those in TDMA or GSM systems. The wide frequency range from DC to 440 MHz covers IF frequencies commonly used in receivers. The output voltage can be directly digitized by an ADC for digital signal processing, making it easy to integrate into modern communication systems.
推荐
Radar and Communication Systems
In radar and communication systems, the AD8310ARMZ is used for signal level detection and automatic gain control (AGC). Its 95 dB dynamic range allows detection of weak signals in the presence of strong interference. The device's fast response time is critical for pulsed radar signals, where the output must settle quickly to accurately measure pulse amplitude. The logarithmic output simplifies AGC loop design, as the control voltage is directly proportional to the input power in dB. The device's wide operating temperature range makes it suitable for outdoor and military applications.
推荐
Test and Measurement Equipment
The AD8310ARMZ is widely used in test and measurement equipment such as spectrum analyzers, power meters, and network analyzers. Its accurate logarithmic response and wide dynamic range make it ideal for measuring signal levels across a broad frequency range. The device's fast output response allows real-time monitoring of signal variations. The compact MSOP-8 package is suitable for portable test equipment. The enable pin can be used to power down the detector when not in use, extending battery life in handheld instruments.
推荐
Wireless Infrastructure
In wireless infrastructure such as cellular base stations, the AD8310ARMZ is used for power monitoring and control. Its 95 dB dynamic range is essential for handling the wide range of signal levels in a base station receiver. The device's frequency range up to 440 MHz covers IF frequencies used in base station transceivers. The logarithmic output provides a linear-in-dB signal that can be used for automatic gain control and transmit power leveling. The device's industrial temperature range ensures reliable operation in outdoor base station environments.
推荐
Portable and Battery-Powered Devices
The AD8310ARMZ is suitable for portable and battery-powered devices due to its low supply voltage (2.7 V to 5.5 V) and enable pin for power-down. It can be used in handheld spectrum analyzers, RF power meters, and portable communication devices. The device's low power consumption when disabled helps extend battery life. The compact MSOP-8 package is ideal for space-constrained designs. The wide dynamic range allows accurate signal measurement in varying conditions, making it a versatile choice for portable RF applications.
推荐
推荐产品汇总
工程参考数据： AD8310ARMZ ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | AD8310ARM | AD8310ARM-REEL | AD8310ARM-REEL7 | AD8313ARM |
|---|---|---|---|---|---|
| Package | 8-MSOP | 8-MSOP | 8-MSOP | 8-MSOP | 8-MSOP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Dynamic Range | 95 dB | 95 dB | 95 dB | 95 dB | 65 dB |
| Frequency Range | DC to 440 MHz | DC to 440 MHz | DC to 440 MHz | DC to 440 MHz | 0.1 GHz to 2.5 GHz |
| Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V |
| Output Current | 25 mA | 25 mA | 25 mA | 25 mA | 25 mA |
| Logarithmic Slope | 24 mV/dB | 24 mV/dB | 24 mV/dB | 24 mV/dB | 24 mV/dB |
| Rise Time | 15 ns | 15 ns | 15 ns | 15 ns | 15 ns |
关键差异点
- Wider dynamic range (95 dB) compared to AD8313ARM （对比 AD8313ARM)
- Lower frequency operation down to DC （对比 AD8313ARM)
- Lead-free (RoHS compliant) version available （对比 AD8310ARM)
设计说明
The AD8310ARMZ operates from 2.7 V to 5.5 V. Ensure the supply is adequately decoupled with a 0.1 µF ceramic capacitor placed close to the VPS pin. For optimal performance, use a low-ESR capacitor and consider a 10 µF bulk capacitor if the supply is noisy. The device draws approximately 20 mA quiescent current, so ensure the supply can handle this.
For best high-frequency performance, place the AD8310ARMZ close to the signal source and keep input traces short. Use a ground plane to minimize parasitic inductance. The input pins (INP, INM) are high-impedance, so shield them from noise. The output pin (OUT) can drive up to 25 mA, so ensure the trace width is adequate for the current.
Do not exceed the absolute maximum supply voltage of 5.5 V. The enable pin (ENBL) is active high; leave it unconnected or tie to VPS for normal operation. The input signal should be AC-coupled if it has a DC offset, as the device is DC-coupled. Ensure the input signal is within the specified input range to avoid saturation.
合规信息
RoHS compliant per distributor listings. REACH and conflict minerals status not specified in the provided data.
