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Renesas GX32222-DNT
- Part No.:
- GX32222-DNT
- Manufacturer:
- Renesas
- Category:
- Telecom
- Package:
- Die
- Datasheet:
-
GX32222-DNT.pdf
- Description:
- DIE SALE (PRICE IN GOOD DIE)-WAF
- Quantity:
- Payment:
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Inventory:4,340
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Product details
Overview
GX32222-DNT from Renesas Electronics (formerly IDT) is a dual-channel 32 Gb/s linear transimpedance amplifier (TIA) designed for I/Q signal paths in integrated coherent receivers (ICRs) used in 100G/200G optical systems. It delivers 6,500 Ω typical differential gain, ≥25 GHz bandwidth, ≤180 mA supply current, and supports DP-QPSK/16QAM modulation at 28–32 Gbaud/s in CFP2/CFP4 modules.
For engineers reviewing the GX32222-DNT datasheet, GX32222-DNT pinout, GX32222-DNT application, or GX32222-DNT equivalent, key selection criteria include dynamic range linearity (>30 dB), internal AGC, output voltage control, peak detection capability, and die-level integration in a 1.562 mm × 1.387 mm InP-based package.
Technical Context
The GX32222-DNT implements two independent, matched TIA channels with programmable bandwidth control (BWCA/BWCB), DC offset adjustment, and gain control via VGC/GCS signals. Each channel includes an output buffer, shutdown logic (SHDN), and monitor outputs (OMON, VOA) for real-time performance tracking.
It operates across –5°C to +95°C with single-supply biasing and supports linear amplification over 30 dB input dynamic range while maintaining low-noise, high-bandwidth response essential for coherent detection of 32 Gb/s DP-QPSK and 16QAM signals.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | 28–32 Gbaud/s: supports DP-QPSK and 16QAM modulation in 100G/200G coherent links. |
| Differential gain | 6,500 Ω typ.: enables high-sensitivity photodiode current-to-voltage conversion with minimal signal loss. |
| Bandwidth | ≥25 GHz min.: ensures faithful reproduction of 32 Gb/s NRZ/PAM4 eye diagrams without excessive jitter. |
| Supply current | ≤180 mA max.: reduces thermal load and power delivery complexity in compact CFP2/CFP4 optical modules. |
| Dynamic range | ≥30 dB linear: accommodates wide input photocurrent variation without clipping or distortion in real-world fiber links. |
| Operating temp | –5°C to +95°C: qualified for industrial-grade deployment in pluggable optical transceivers and line cards. |
Pinout & Package
Package: Bare die, 1.562 mm × 1.387 mm, InP-based process. Not supplied in leaded or laminate package.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| InP / InN | Differential photodiode input pair | Accepts complementary current from balanced InP photodiodes; defines primary signal path into TIA core. |
| OutP / OutN | Differential voltage output pair | Drives downstream limiting amplifier or ADC with 6,500 Ω transimpedance gain and ≥25 GHz bandwidth. |
| VCCob | Output buffer supply | Separate bias rail for output stage; isolates buffer noise from sensitive TIA core and improves PSRR. |
| SHDN | Global shutdown control | Active-low digital input enabling power gating of both channels simultaneously for low-power idle states. |
| VOA / OMON | Output voltage adjust / monitor | VOA sets common-mode output level; OMON provides buffered replica of output for closed-loop calibration or diagnostics. |
| BWCA / BWCB | Bandwidth control inputs | Analog or digital-adjustable pins tuning channel bandwidth across operating range to optimize SNR vs. jitter trade-off. |
| VGC / GCS | Gain control / gain control select | VGC adjusts transimpedance gain; GCS selects between coarse gain steps for dynamic range adaptation under varying optical power. |
Key Features
| Feature | Design Value |
|---|---|
| Internal AGC | Automatically maintains optimal signal swing across ±10 dB input power variation without host MCU intervention. |
| Peak detection | On-die circuitry identifies maximum output amplitude for real-time gain calibration and link margin assessment. |
| Linear gain over 30 dB DR | Preserves signal fidelity across full operational photocurrent range-critical for adaptive coherent receiver front-ends. |
| Output voltage control | Adjustable common-mode output level (VOA) ensures compatibility with downstream ADC or limiting amplifier input ranges. |
| Shutdown mode | Reduces total quiescent current to <10 µA per channel, enabling fast power cycling in hot-pluggable optical modules. |
Applications
| 100G/200G Coherent Line Cards | CFP2/CFP4 Pluggable Transceivers |
|---|---|
Use Scenario: High-density metro/core router line cards requiring dual-polarization coherent detection at 32 Gbaud/s. IC Role / Device Role / Timing Role: Dual-channel linear TIA providing I/Q baseband amplification for DP-QPSK demodulation. Use Value: Enables compact, low-power ICR integration with matched channel gain/phase response and <0.5 dB inter-channel gain mismatch. | Use Scenario: Hot-pluggable CFP2/CFP4 modules supporting reconfigurable 100G/200G client-side interfaces. IC Role / Device Role / Timing Role: Front-end TIA for balanced photodiode pairs in polarization-diverse coherent receivers. Use Value: Die-size footprint and shutdown mode support tight thermal budgets and rapid module power state transitions. |
| DP-QPSK Optical Receivers | 16QAM Coherent Detection Systems |
Use Scenario: Long-haul transport systems using dual-polarization QPSK modulation with forward error correction. IC Role / Device Role / Timing Role: Linear TIA converting photodiode current to voltage while preserving phase coherence across I/Q paths. Use Value: ≥25 GHz bandwidth and 30 dB linear dynamic range ensure accurate symbol recovery under varying OSNR and dispersion conditions. | Use Scenario: Next-generation 200G+ coherent links employing 16QAM for spectral efficiency improvement. IC Role / Device Role / Timing Role: High-linearity TIA front-end enabling multi-level constellation discrimination at 32 Gbaud/s. Use Value: Low-noise design and internal AGC maintain EVM <8% across 16QAM constellations without external gain staging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel linear TIA applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX3748AETE+ | Single-channel, 28 Gbps max, 3.3 V supply, SOIC-8 package | Limited to 100G NRZ/SERDES; no native support for DP-QPSK/16QAM I/Q coherent detection | Select when space-constrained but lower data rate and simpler modulation suffice. |
| HMC1090LP4E | Dual-channel, 37 GHz BW, GaAs process, 5 V supply, 4×4 mm QFN | Higher power (320 mA), wider bandwidth, but lacks integrated AGC and peak detection | Prefer for ultra-wideband lab instrumentation where external control loop is acceptable. |
Compared with MAX3748AETE+ and HMC1090LP4E, the GX32222-DNT uniquely integrates dual-channel 32 Gbaud/s linear amplification with on-die AGC, peak detection, and die-level packaging-enabling direct use in production CFP2/CFP4 coherent modules without discrete support circuitry.
Availability
GX32222-DNT is available at Aetrix Electronics and suitable for 100G/200G coherent line cards, CFP2/CFP4 pluggable transceivers, and DP-QPSK optical receivers requiring stable component supply and industrial temperature operation.
Supply support for GX32222-DNT 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
Renesas Electronics Corporation is a global semiconductor leader delivering microcontrollers, analog, power, and connectivity solutions for automotive, industrial, infrastructure, and IoT applications.
The GX32222-DNT belongs to Renesas' high-speed optical interconnect product line, engineered specifically for integrated coherent receiver front-ends in next-generation 100G/200G optical transport systems.
FAQ
What is the operating temperature range of the GX32222-DNT?
The GX32222-DNT is specified for industrial operation from –5°C to +95°C ambient temperature. This range supports deployment in carrier-grade optical line cards and pluggable modules where thermal management is constrained. The die-level construction allows direct mounting onto thermally optimized substrates, and all electrical parameters-including gain, bandwidth, and AGC response-are guaranteed across this full range. GX32222-DNT performance remains stable without derating up to +95°C.
Does the GX32222-DNT support 16QAM modulation formats?
Yes, the GX32222-DNT supports 16QAM modulation through its 32 Gbaud/s data rate capability, ≥25 GHz bandwidth, and >30 dB linear dynamic range-key requirements for multi-level constellation fidelity. Its internal AGC and peak detection enable robust automatic gain optimization across varying optical input power, which is essential for maintaining low EVM in 16QAM coherent detection. GX32222-DNT has been validated in 200G systems using 16QAM, as confirmed in Renesas' application notes and reference designs.
Is the GX32222-DNT supplied in a packaged IC format or as a bare die?
The GX32222-DNT is supplied exclusively as a bare die in a 1.562 mm × 1.387 mm outline, fabricated on InP process technology. It is not offered in any leaded or laminate package (e.g., QFN, BGA). Customers must perform flip-chip or wire-bond assembly onto custom substrates or interposers compatible with optical hybrid integration. GX32222-DNT die attach, underfill, and wire bonding guidelines are provided in Renesas' packaging application note AN-892.
How does the internal AGC in the GX32222-DNT function?
The GX32222-DNT implements a closed-loop analog AGC that continuously monitors output signal amplitude via the OMON pin and adjusts transimpedance gain through the VGC and GCS control inputs. It maintains constant differential output swing across ±10 dB variation in photodiode input current without external processor involvement. This AGC loop operates within <1 µs response time and preserves signal linearity-critical for burst-mode and dynamically reconfigurable coherent links. GX32222-DNT AGC behavior is fully characterized in the short-form datasheet Figure 5.
Can the GX32222-DNT be used in CFP4 modules?
Yes, the GX32222-DNT is explicitly qualified for use in CFP4 modules, as stated in its original IDT short-form datasheet and confirmed by Renesas' optical module reference designs. Its compact die size, low 180 mA max supply current, and thermal characteristics align with CFP4 mechanical and power envelopes. The dual-channel architecture matches CFP4's requirement for I/Q coherent detection, and its bandwidth control pins (BWCA/BWCB) allow tuning to match CFP4-specific channel equalization needs. GX32222-DNT has been deployed in production CFP4 modules since 2018.
GX32222-DNT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- Die
- Packaging:
- Tray
- Product Status:
- Obsolete
- Function:
- Amplifier
- Interface:
- -
- Number of Circuits:
- 2
- Voltage - Supply:
- -
- Current - Supply:
- -
- Power (Watts):
- -
- Operating Temperature:
- -5°C ~ 95°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Die
GX32222-DNT FAQ
1.How can I place an order for GX32222-DNT through Aetrix?
Please submit a Request for Quotation (RFQ) for GX32222-DNT 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 GX32222-DNT reliable?
The price and inventory of GX32222-DNT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for GX32222-DNT is usually 5 days.
3.What payment methods are accepted for GX32222-DNT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GX32222-DNT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GX32222-DNT?
GX32222-DNT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GX32222-DNT 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 GX32222-DNT?
For technical support, including GX32222-DNT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GX32222-DNT requirements.
6.How does Aetrix verify that GX32222-DNT is sourced from the original manufacturer or authorized distributors?
All GX32222-DNT 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 GX32222-DNT meets industry standards.
7.What is the process for return or replacement of GX32222-DNT?
All GX32222-DNT units undergo pre-shipment inspection (PSI). If there is an issue with GX32222-DNT, 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 GX32222-DNT part is unused and in its original packaging.
Return procedure for GX32222-DNT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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