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Analog Devices Inc. ADL5370ACPZ-WP
- Part No.:
- ADL5370ACPZ-WP
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF Modulators
- Package:
- -
- Datasheet:
-
ADL5370ACPZ-WP.pdf
- Description:
- IC MODULATOR QUAD 24-LFCSP
- Quantity:
- Payment:
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Product details
Overview
ADL5370ACPZ-WP from Analog Devices is a fixed-gain quadrature modulator operating from 300 MHz to 1000 MHz, accepting differential I/Q baseband inputs and a single-ended LO to generate a single-ended 50 Ω RF output. It delivers 6.2 dBm typical output power, −41 dBc sideband suppression, and −50 dBm carrier feedthrough at 450 MHz-enabling high-performance zero-IF or low-IF modulation in cellular base stations and broadband wireless transmitters.
For engineers reviewing the ADL5370ACPZ-WP datasheet, ADL5370ACPZ-WP pinout, ADL5370ACPZ-WP application, or ADL5370ACPZ-WP equivalent, key selection criteria include its 500 MHz 3 dB baseband bandwidth, 11 dBm P1dB compression point, −160 dBm/Hz noise floor, and 24-lead LFCSP package with exposed paddle for thermal management.
Technical Context
The ADL5370ACPZ-WP integrates a polyphase LO quadrature splitter, voltage-to-current (V-to-I) converters for differential baseband inputs, dual Gilbert-cell mixers, and a differential-to-single-ended (D-to-S) amplifier with on-chip 50 Ω termination. Its bias circuit uses a band gap reference to generate PTAT current for V-to-I stages and temperature-independent current for the D-to-S stage.
LO input (pins LOIP/LOIN) is single-ended with internal dc bias and requires ac coupling; baseband inputs (IBBP/IBBN/QBBP/QBBN) are high-impedance, require external 500 mV dc bias, and support up to 1.4 V p-p differential swing; RF output (VOUT) is internally biased and must be ac-coupled to a 50 Ω load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Frequency Range | 300 MHz to 1000 MHz - supports cellular bands (450 MHz), WiMAX, satellite modems, and cable equipment without external frequency translation. |
| Modulation Bandwidth | >500 MHz (3 dB) - enables wideband digital predistortion and high-data-rate zero-IF transmission. |
| Output Power | 6.2 dBm typical - sufficient for direct drive of power amplifiers in macro/micro base station transmit chains. |
| Sideband Suppression | −41 dBc @ 450 MHz - reduces adjacent-channel interference in CDMA2000/GSM systems. |
| Carrier Feedthrough | −50 dBm @ 450 MHz - minimizes spectral regrowth and simplifies post-modulation filtering. |
| Noise Floor | −160 dBm/Hz @ 20 MHz offset - ensures clean spectral purity for high-order QAM (e.g., 256-QAM) in WiMAX and LTE. |
| Supply Voltage | 4.75 V to 5.25 V - compatible with standard 5 V system rails and supports stable operation across industrial temperature range (−40°C to +85°C). |
Pinout & Package
ADL5370ACPZ-WP is housed in a 24-lead, 4 mm × 4 mm, exposed-paddle LFCSP package (RoHS-compliant, Pb-free). The exposed paddle must be soldered to a low-impedance ground plane for optimal thermal dissipation and RF performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IBBP / IBBN / QBBP / QBBN (Pins 19, 20, 23, 24) | Differential I/Q Baseband Inputs | High-impedance, externally biased (500 mV dc) nodes requiring 1.4 V p-p differential drive; no internal biasing - mismatch causes carrier feedthrough. |
| LOIP / LOIN (Pins 8, 9) | Single-Ended LO Input | Internally dc-biased; LOIP accepts ac-coupled LO signal (0 dBm nominal), LOIN must be ac-grounded - improper termination degrades return loss and sideband suppression. |
| VOUT (Pin 13) | RF Output | Single-ended, 50 Ω internally terminated; must be ac-coupled - no external matching required, but dc blocking preserves output bias integrity. |
| VPS1–VPS5 (Pins 3–6, 14–18) | Positive Supply Pins | Five dedicated 5 V supply connections; each requires local 0.1 µF bypass capacitor to ground - shared decoupling between adjacent pins is permitted per layout guidelines. |
| COM1–COM4 (Pins 1, 2, 7, 10–12, 21, 22) | Input Common Grounds | Low-impedance ground return paths for baseband and LO sections - must connect to same ground plane as exposed paddle to minimize noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Quadrature accuracy | 0.76° phase error and 0.03 dB amplitude balance - enables >40 dB EVM margin for 64-QAM in 450 MHz cellular infrastructure. |
| Output linearity | OIP3 = 24 dBm, OIP2 = 60 dBm - supports multi-carrier WCDMA with minimal intermodulation distortion. |
| Baseband interface flexibility | 2900 kΩ differential input impedance and 70 MHz (0.1 dB) bandwidth - accommodates direct connection to TxDAC® outputs (e.g., AD9779) with simple resistor biasing. |
| Thermal robustness | θJA = 54°C/W with exposed paddle soldered down - sustains 205 mA supply current at +85°C ambient without derating. |
Applications
| Cellular Base Station Transmitter | WiMAX Subscriber Unit |
|---|---|
Use Scenario: Transmit path in 450 MHz TD-LTE macro base station supporting 20 MHz channel bandwidth and 256-QAM. IC Role / Device Role / Timing Role: Direct RF quadrature modulator converting baseband I/Q signals to 450 MHz carrier with minimal image and carrier leakage. Use Value: −41 dBc sideband suppression and −50 dBm carrier feedthrough reduce adjacent-channel power ratio (ACPR) by >8 dB versus legacy modulators, easing filter requirements. |
Use Scenario: Outdoor CPE unit operating in 3.5 GHz WiMAX band using IF-upconversion architecture with 450 MHz first IF. IC Role / Device Role / Timing Role: Low-IF modulator translating 450 MHz IF to final RF band; leverages >500 MHz baseband bandwidth for wide instantaneous signal capture. Use Value: 6.2 dBm output power drives subsequent GaAs driver stage without gain staging; −160 dBm/Hz noise floor maintains 35 dB SNR for 64-QAM demodulation. |
| Satellite Modem Uplink | Cable DOCSIS 3.1 Node |
Use Scenario: Ka-band satellite terminal uplink using 450 MHz IF with digital predistortion (DPD) feedback loop. IC Role / Device Role / Timing Role: Wideband modulator providing linear, low-noise RF output for DPD training and real-time correction. Use Value: 500 MHz 3 dB baseband bandwidth captures full DPD observation bandwidth; OIP3 = 24 dBm ensures accurate error vector measurement. |
Use Scenario: Upstream transmitter in distributed access architecture (DAA) node supporting 1024-QAM upstream channels. IC Role / Device Role / Timing Role: Zero-IF modulator generating 5–85 MHz upstream spectrum directly from DAC outputs. Use Value: 0.03 dB I/Q amplitude balance and 0.76° quadrature error maintain <−45 dBc composite triple beat (CTB) in multi-channel operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quadrature modulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADL5371ACPZ-WP | Same 300–1000 MHz range but higher gain (+10 dB vs. +6 dB); 12 dBm P1dB; identical pinout and package. | Better suited for low-drive DAC interfaces or systems requiring higher output before PA; consumes same 205 mA. | Select ADL5371ACPZ-WP when DAC output swing is limited (<1 V p-p) or when higher output headroom is needed before external PA. |
| TRF3705IRGZT | 300–4000 MHz range; 5.5 V supply; 13 dBm P1dB; different 24-pin QFN package; no exposed paddle; requires external LO buffer. | Broader frequency coverage supports multi-band radios; lacks integrated LO splitter and has higher noise floor (−155 dBm/Hz). | Choose TRF3705IRGZT only when operation above 1000 MHz is required; verify LO drive capability and thermal design due to missing exposed paddle. |
Compared with ADL5371ACPZ-WP, the ADL5370ACPZ-WP offers lower gain and reduced LO drive sensitivity, making it more tolerant of DAC common-mode variation; versus TRF3705IRGZT, it provides superior noise performance and integrated thermal management but narrower upper-frequency limit.
Availability
ADL5370ACPZ-WP is available at Aetrix Electronics and suitable for cellular infrastructure, WiMAX CPE, satellite modem uplinks, and DOCSIS 3.1 node designs requiring stable component supply, long-term obsolescence planning, and traceable sourcing.
Supply support for ADL5370ACPZ-WP 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
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with design centers worldwide and manufacturing in advanced SiGe processes.
The ADL5370ACPZ-WP belongs to Analog Devices' fixed-gain quadrature modulator (F-MOD) family, engineered specifically for high-linearity, low-noise direct RF and low-IF modulation in wireless infrastructure and broadband communications equipment.
FAQ
What is the recommended LO drive level for ADL5370ACPZ-WP?
The ADL5370ACPZ-WP is characterized at 0 dBm single-ended LO drive on LOIP, with acceptable operation from −7 dBm to +7 dBm. Increasing LO drive to +7 dBm improves noise floor by ~3 dB at 6 MHz offset (e.g., GSM), but degrades sideband suppression by ~4 dB - so +7 dBm is only advised when noise dominates system budget and sideband rejection is relaxed.
Can ADL5370ACPZ-WP operate outside its specified 300–1000 MHz range?
No - the ADL5370ACPZ-WP is guaranteed only for 300–1000 MHz operation, where sideband suppression remains below −30 dBc. At 250 MHz, sideband suppression degrades to −25 dBc; above 1000 MHz, carrier feedthrough exceeds −40 dBm. Operation outside this band risks noncompliance with 3GPP or IEEE 802.16 spectral mask requirements.
How should the baseband inputs of ADL5370ACPZ-WP be biased?
The ADL5370ACPZ-WP baseband inputs (IBBP/IBBN/QBBP/QBBN) require an external 500 mV dc common-mode bias. They are not self-biased. A typical interface uses 50 Ω resistors from each DAC output to ground (e.g., AD9779), establishing both bias and proper termination. Deviation beyond 400–600 mV reduces usable ac swing and increases carrier feedthrough.
Does ADL5370ACPZ-WP support differential LO input?
No - the ADL5370ACPZ-WP accepts only single-ended LO via LOIP, with LOIN ac-coupled to ground. Its internal polyphase splitter generates quadrature LO signals from this single input. For true differential LO drive, consider ADL5375 or ADL5380, which have fully differential LO ports and different pinouts.
What is the thermal requirement for ADL5370ACPZ-WP's exposed paddle?
The exposed paddle of ADL5370ACPZ-WP must be soldered to a low-thermal-resistance ground plane using ≥9 vias under the pad. With proper grounding, θJA is 54°C/W. Without soldered paddle, junction temperature rises >30°C at full 205 mA supply current - risking reliability failure above 70°C ambient. AN-772 details recommended PCB layout practices.
ADL5370ACPZ-WP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- ADL5370
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- -
- LO Frequency:
- -
- RF Frequency:
- -
- P1dB:
- -
- Noise Floor:
- -
- Output Power:
- -
- Current - Supply:
- -
- Voltage - Supply:
- -
- Test Frequency:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
ADL5370ACPZ-WP FAQ
1.How can I place an order for ADL5370ACPZ-WP through Aetrix?
Please submit a Request for Quotation (RFQ) for ADL5370ACPZ-WP 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 ADL5370ACPZ-WP reliable?
The price and inventory of ADL5370ACPZ-WP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADL5370ACPZ-WP is usually 5 days.
3.What payment methods are accepted for ADL5370ACPZ-WP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADL5370ACPZ-WP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADL5370ACPZ-WP?
ADL5370ACPZ-WP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADL5370ACPZ-WP 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 ADL5370ACPZ-WP?
For technical support, including ADL5370ACPZ-WP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADL5370ACPZ-WP requirements.
6.How does Aetrix verify that ADL5370ACPZ-WP is sourced from the original manufacturer or authorized distributors?
All ADL5370ACPZ-WP 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 ADL5370ACPZ-WP meets industry standards.
7.What is the process for return or replacement of ADL5370ACPZ-WP?
All ADL5370ACPZ-WP units undergo pre-shipment inspection (PSI). If there is an issue with ADL5370ACPZ-WP, 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 ADL5370ACPZ-WP part is unused and in its original packaging.
Return procedure for ADL5370ACPZ-WP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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