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Analog Devices Inc./Maxim Integrated MAX9930EUA+T
- Part No.:
- MAX9930EUA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- RF Detectors
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX9930EUA+T.pdf
- Description:
- IC RF DETECT 2MHZ-1.6GHZ 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:3,531
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Product details
Overview
MAX9930EUA+T from Maxim Integrated is a low-power, 2MHz–1.6GHz logarithmic amplifier designed for RF power amplifier (PA) control loops in wireless transmitters. It delivers 45dB dynamic range, -58dBV to -13dBV input voltage range (-45dBm to 0dBm at 50Ω), 25–29mV/dB logarithmic slope, and operates from -40°C to +85°C with 7mA supply current at 5V. It serves as a complete RF-detecting PA controller in cellular handsets and GPON-CATV triplexors.
For engineers reviewing the MAX9930EUA+T datasheet, MAX9930EUA+T pinout, MAX9930EUA+T application, or MAX9930EUA+T equivalent, key selection criteria include its logarithmic intercept (-61dBm typ at 2MHz), fast 70ns 10dB step response, 10mA output sourcing capability, temperature-stable linear-in-dB output, and μMAX-8 package compatibility with RF front-end layout constraints.
Technical Context
The MAX9930EUA+T implements a five-stage logarithmic amplifier strip-four 10dB gain stages plus a pre-amplifier detector-feeding summed rectified currents into a high-gain transconductance (gm) stage. Its transfer function is defined by logarithmic slope (25–29mV/dB) and intercept (-61dBm typ), enabling precise RF power calculation via RFIN = (SET / SLOPE) + IP.
It operates in controller mode: RFIN accepts coupled PA output, SET sets target power level (0.35V–1.45V), CLPF sets loop bandwidth via external capacitor, and OUT drives the PA's gain-control input with rail-to-rail swing (150mV to VCC–250mV) while sourcing up to 10mA. SHDN enables shutdown with 13μA quiescent current and 2.5μs power-on delay.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RF Frequency Range | 2MHz to 1.6GHz - supports GSM, CDMA, TDMA, GPRS, and GPON-CATV upstream/downstream bands |
| Input Voltage Range | -58dBV to -13dBV - covers -45dBm to 0dBm at 50Ω, eliminating need for external attenuators in low-power PA control |
| Logarithmic Slope | 25–29mV/dB (typ 27mV/dB at 2MHz) - defines resolution and linearity of power measurement across temperature and frequency |
| Dynamic Range | 45dB (±1dB conformance) - enables accurate RSSI and closed-loop PA control over wide signal variation |
| Supply Current | 7mA at 5V - enables low-power operation in battery-powered terminals and portable RF modules |
| Shutdown Current | 13μA (typ) - allows deep power gating during idle periods without compromising wake-up latency |
| Output Drive | 10mA sourcing capability - directly interfaces with standard PA gain-control inputs without buffer amplification |
Pinout & Package
The MAX9930EUA+T is housed in an 8-pin μMAX® package (2.1mm × 2.1mm, 0.5mm pitch), optimized for RF layout with minimal parasitic inductance and ground plane continuity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RFIN | RF Input | AC-coupled RF port accepting 2MHz–1.6GHz signals; requires external series capacitor and 50Ω shunt for impedance matching |
| SHDN | Shutdown Control | Active-low logic input; pulling ≤0.8V places device in 13μA shutdown state with glitch-free 2.5μs power-on delay on OUT |
| SET | Set-Point Reference | Analog input (0.35V–1.45V) defining target RF power level; determines PA output via log transfer function |
| CLPF | Control Loop Filter | Connection point for external capacitor to ground; sets dominant pole of PA control loop bandwidth (e.g., 100nF → ~20MHz BW) |
| GND | Ground | Dedicated analog ground reference; must be low-impedance and isolated from digital/RF return paths |
| N.C. | No Connection | Pin 6 is unconnected internally; must remain floating or grounded per layout best practices |
| OUT | PA Gain-Control Output | Voltage-output stage sourcing up to 10mA; swings 150mV to VCC–250mV to drive variable-gain PA bias inputs |
| VCC | Supply Voltage | 2.7V–5.25V analog supply; requires local 0.1μF ceramic bypass capacitor to GND for RF stability |
Key Features
| Feature | Design Value |
|---|---|
| Complete RF-Detecting PA Controller | Integrates detector strip, gm stage, and buffered output - eliminates discrete diode detector + op-amp + DAC complexity in closed-loop PA design |
| Temperature-Stable Linear-in-dB Response | ±0.5dB max error over -40°C to +85°C - ensures consistent RSSI accuracy and power control without calibration drift |
| Fast 10dB Step Response | 70ns rise time - enables rapid AGC correction for burst-mode transmissions (e.g., TDMA, OOK) |
| Voltage-Referenced Input Ranges | -58dBV to -13dBV input span - matches typical directional coupler outputs without external scaling or attenuation |
| Low-Power Shutdown Mode | 13μA typical shutdown current - extends battery life in intermittent-transmit applications like IoT sensors and handheld terminals |
Applications
| Cellular Handsets (GSM/TDMA) | RSSI for GPON-CATV Triplexors |
|---|---|
Use Scenario: Real-time transmit power regulation in dual-band GSM handsets using directional coupler feedback. IC Role / Device Role / Timing Role: MAX9930EUA+T acts as the core RF power detector and analog controller, converting coupled PA output to a DC voltage that adjusts PA bias in closed loop. Use Value: Enables ±0.5dB transmit power accuracy across temperature and battery voltage variation, meeting 3GPP output power mask requirements. | Use Scenario: Downstream RF power monitoring in GPON optical line terminals with integrated CATV video overlay. IC Role / Device Role / Timing Role: MAX9930EUA+T measures composite RF video signal amplitude (47–862MHz) and provides stable DC output for automatic level control (ALC). Use Value: Delivers 45dB dynamic range and <±1dB log conformance - maintains consistent downstream video SNR despite fiber loss fluctuations. |
| Transmitter Power Measurement | Low-Frequency RF OOK/ASK Applications |
Use Scenario: Production-line RF power calibration of WiFi/BT modules using swept CW tones. IC Role / Device Role / Timing Role: MAX9930EUA+T functions as a precision RF detector feeding a microcontroller ADC, replacing costly spectrum analyzers for pass/fail testing. Use Value: Provides traceable -45dBm to 0dBm measurement with 25mV/dB slope - reduces test fixture cost and cycle time vs. external instrumentation. | Use Scenario: ASK/OOK envelope detection in sub-GHz ISM band remote controls and sensor nodes. IC Role / Device Role / Timing Role: MAX9930EUA+T serves as a wide-dynamic-range demodulator, converting modulated RF bursts into clean baseband logic-level pulses. Use Value: Achieves 70ns response and 45dB range - reliably recovers data from low-SNR, duty-cycled transmissions without AGC settling delays. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar RF-detecting controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX9931EUA+T | Wider input range: -48dBV to -3dBV (-35dBm to +10dBm); higher RF input tolerance (+16dBm max) | Better suited for medium-power PAs (e.g., LTE UE power class 3) where MAX9930EUA+T would saturate | Select when controlling PAs with >0dBm coupled output; verify CLPF compensation for altered loop dynamics |
| AD8313ARMZ | 20MHz–2.5GHz range; 60dB dynamic range; 2.7V–5.5V supply; 5.5mA ICC; no SET/CLPF pins - pure detector only | Lacks integrated controller functionality (no SET input or OUT drive); requires external DAC and op-amp for closed-loop use | Choose for wideband detector-only roles or when system already includes digital control; not drop-in for MAX9930EUA+T controller topology |
Compared with MAX9931EUA+T and AD8313ARMZ, the MAX9930EUA+T offers optimal balance of low-end sensitivity (-45dBm), compact μMAX-8 footprint, and full analog controller integration - making it ideal for cost-sensitive, space-constrained GSM/GPRS handset designs requiring self-contained PA regulation.
Availability
MAX9930EUA+T is available at Aetrix Electronics and suitable for cellular handset manufacturing, GPON-CATV infrastructure, and RF test equipment requiring stable component supply, RoHS-compliant packaging, and long-term production continuity.
Supply support for MAX9930EUA+T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in precision analog, mixed-signal, and RF ICs for industrial, communications, and consumer applications.
The MAX9930–MAX9933 family was engineered specifically for RF power control in wireless transmitters - delivering integrated logarithmic detection, temperature-stable transfer functions, and analog loop interface capability in miniature packages.
FAQ
What is the operating temperature range for the MAX9930EUA+T?
The MAX9930EUA+T is specified for continuous operation from -40°C to +85°C. All electrical characteristics-including logarithmic slope, intercept, and conformance error-are guaranteed across this full industrial temperature range, with typical error maintained within ±0.5dB at -40°C and +85°C per the datasheet's LOG CONFORMANCE vs. TEMPERATURE plots. This makes the MAX9930EUA+T suitable for deployment in outdoor base stations and automotive telematics units.
How does the MAX9930EUA+T interface with a power amplifier in a closed-loop control system?
The MAX9930EUA+T interfaces directly: RFIN receives a coupled sample of the PA output via directional coupler and AC-coupling capacitor; SET accepts a DC voltage (0.35V–1.45V) from a DAC or potentiometer defining target power; CLPF connects to an external capacitor setting loop bandwidth; and OUT drives the PA's gain-control pin with 10mA sourcing capability. The MAX9930EUA+T continuously compares detected RF level to SET and adjusts OUT to maintain constant output power.
What is the purpose of the CLPF pin on the MAX9930EUA+T?
The CLPF pin on the MAX9930EUA+T connects to an external capacitor to ground, forming the dominant pole of the PA control loop. Its value (e.g., 100nF) sets small-signal bandwidth (~20MHz) and influences transient response-smaller capacitors increase bandwidth but risk instability if PA control path phase lag is excessive. The MAX9930EUA+T's internal gm stage and buffer ensure predictable loop behavior without requiring external compensation components.
Can the MAX9930EUA+T be used with a 3.3V supply?
Yes, the MAX9930EUA+T operates from 2.7V to 5.25V, making 3.3V fully compatible. At 3.3V, supply current remains ~6.8mA (per SUPPLY CURRENT vs. SUPPLY VOLTAGE plot), logarithmic slope holds at 25–29mV/dB, and OUT retains full 10mA sourcing capability with output swing from 150mV to ~3.05V. The 3.3V operation is commonly used in modern baseband ICs and low-voltage RF modules interfacing with the MAX9930EUA+T.
What is the maximum RF input power the MAX9930EUA+T can handle?
The MAX9930EUA+T has an absolute maximum RF input rating of +6dBm at RFIN. Exceeding this risks permanent damage. For reliable operation within specifications, the usable input power range is -45dBm to 0dBm (i.e., -58dBV to -13dBV at 50Ω), where logarithmic conformance error stays within ±1dB. Applications requiring higher input levels (e.g., +10dBm) should use the MAX9931EUA+T variant instead.
MAX9930EUA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Frequency:
- 2MHz ~ 1.6GHz
- RF Type:
- Cellular, TDMA, CDMA, GPRS, GSM
- Input Range:
- -45dBm ~ 0dBm
- Accuracy:
- ±1dB
- Voltage - Supply:
- 2.7V ~ 5.25V
- Mounting Type:
- 12 mA
- Supplier Device Package:
- Surface Mount
- Current - Supply:
- 8-uMAX/uSOP
MAX9930EUA+T FAQ
1.How can I place an order for MAX9930EUA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9930EUA+T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX9930EUA+T reliable?
The price and inventory of MAX9930EUA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9930EUA+T is usually 5 days.
3.What payment methods are accepted for MAX9930EUA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9930EUA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9930EUA+T?
MAX9930EUA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9930EUA+T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX9930EUA+T?
For technical support, including MAX9930EUA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9930EUA+T requirements.
6.How does Aetrix verify that MAX9930EUA+T is sourced from the original manufacturer or authorized distributors?
All MAX9930EUA+T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX9930EUA+T meets industry standards.
7.What is the process for return or replacement of MAX9930EUA+T?
All MAX9930EUA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX9930EUA+T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX9930EUA+T part is unused and in its original packaging.
Return procedure for MAX9930EUA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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