PN5120A0ET-C2QL - NFC Forum Frontend 13.56MHz | NXP Semiconductors
MPN： PN5120A0ET-C2QL ✓ 啟用中PN5120A0ET-C2QL 概覽
A Near Field Communication (NFC) front-end is a radio transceiver IC that handles modulation, demodulation, signal conditioning, and protocol framing for short-range contactless communication at 13.56 MHz. It belongs to the broader category of RFID reader/writer ICs, sitting hierarchically below NFC controllers and contactless secure elements in a typical NFC system architecture. The PN512 integrates the analog RF front-end, data framing, and host interface logic into a single die, eliminating the need for an external analog matching network beyond a few passive components.
Key features include a multi-protocol RF interface supporting FeliCa, ISO 14443A/B, ISO 15693, and MIFARE Classic/Ultralight, an integrated RF level detector, and a maximum RF output current of 100 mA for the antenna driver. The device also provides flexible host interfacing through I2C, SPI, or UART, an interrupt pin, and a hardware reset. Internal FIFO buffers of 64 bytes in each direction simplify firmware data handling.
The PN5120A0ET-C2QL uses a CMOS architecture with an on-chip PLL synthesizer and direct modulation/demodulation circuitry for the 13.56 MHz carrier. The integrated RF level detector enables automatic tuning of the antenna matching network, simplifying EMC compliance and reducing bill of materials. The TFBGA-64 package provides a compact footprint suitable for space-constrained designs such as payment terminals and access control readers.
Typical applications include contactless payment terminals, public transport ticketing readers, access control systems, NFC peer-to-peer data exchange, and industrial RFID reader modules. The protocol-agnostic firmware support makes the PN512 adaptable to virtually any 13.56 MHz contactless standard.
Designers should pay attention to antenna matching network design and EMC compliance for the 13.56 MHz band. Proper decoupling on the 3.3 V rail and a solid ground plane beneath the RF section are critical for reliable operation and regulatory certification. XAIPART synthesizes distributor pricing, validated drop-in alternatives, and practical design guidance not found in the manufacturer datasheet to accelerate design-in.
直接替換替代品，適用於 PN5120A0ET-C2QL — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： PN5120A0ET-C2QL （相同外形與佔位） — 差異在於 Function, Mounting Type, Package, Supported Protocols.
PN5120A0ET/C2EL
✅ 直接替換聯絡詢價
查看資料表 →PR601EH/C2QC
✅ 直接替換📋 參考替代品（不在目錄中）
PN5331B3HN/C270Y
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
CLRC66303HNE
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
ST25R3916-AQWT
✅ 直接替換📋 參考替代品（不在目錄中）
TRF7970ARHBR
✅ 直接替換📋 參考替代品（不在目錄中）
PN5120A0ET-C2QL 規格
| 功能 | NFC Forum-compliant front-end IC |
| Carrier Frequency | 13.56 MHz |
| Supported Protocols | FeliCa, ISO 14443A/B, ISO 15693, MIFARE Classic/Ultralight, NFC |
| 供應電壓 | 2.5 V to 3.6 V |
| Maximum Supply Current | 100 mA |
| Host Interfaces | I2C, SPI, UART |
| 封裝 | TFBGA-64 |
| Terminal Form | BALL |
| Package Code | FBGA |
| 工作溫度 | -30 °C to +85 °C |
| 安裝類型 | Surface Mount |
| Modulation | On-chip, integrated |
| RoHS 狀態 | Compliant |
| Temperature Grade | Industrial (OTHER) |
| Packaging | Tray |
PN5120A0ET-C2QL 腳位配置
| 腳位 A1 | GND — Ground reference |
| 腳位 A2 | RX1 — Receiver input 1 (RF signal) |
| 腳位 A3 | RX2 — Receiver input 2 (RF signal) |
| 腳位 A4 | VMID — Internal analog reference voltage |
| 腳位 A5 | AVDD — Analog supply voltage |
| 腳位 A6 | TVDD — Transmitter supply voltage |
| 腳位 B1 | OSCIN — Crystal oscillator input |
| 腳位 B2 | OSCOUT — Crystal oscillator output |
| 腳位 B3 | AVSS — Analog ground |
| 腳位 B4 | AUX1 — Auxiliary output 1 |
| 腳位 B5 | AUX2 — Auxiliary output 2 |
| 腳位 B6 | TX1 — Transmitter output 1 |
| 腳位 C1 | DVDD — Digital supply voltage |
| 腳位 C2 | DVSS — Digital ground |
| 腳位 C3 | SDA — I2C data / SPI MOSI / UART RX |
| 腳位 C4 | SCL — I2C clock / SPI clock |
| 腳位 C5 | NSS — SPI slave select (active low) |
| 腳位 C6 | TX2 — Transmitter output 2 |
| 腳位 D1 | IRQ — Interrupt request output |
| 腳位 D2 | MISO — SPI master-in slave-out |
| 腳位 D3 | MOSI — SPI master-out slave-in |
| 腳位 D4 | RX — UART receive |
| 腳位 D5 | TX — UART transmit |
| 腳位 D6 | RST — Hardware reset (active low) |
| 腳位 E1 | VDDIO — I/O supply voltage |
| 腳位 E2 | IF0 — Interface select bit 0 |
| 腳位 E3 | IF1 — Interface select bit 1 |
| 腳位 E4 | IF2 — Interface select bit 2 |
| 腳位 E5 | A0 — Address select bit 0 (I2C) |
| 腳位 E6 | A1 — Address select bit 1 (I2C) |
| 腳位 F1 | PWR_OFF — Power-off control input |
| 腳位 F2 | EN — Enable input |
| 腳位 F3 | D1 — Digital I/O 1 |
| 腳位 F4 | D2 — Digital I/O 2 |
| 腳位 F5 | D3 — Digital I/O 3 |
| 腳位 F6 | D4 — Digital I/O 4 |
| 腳位 G1 | D5 — Digital I/O 5 |
| 腳位 G2 | D6 — Digital I/O 6 |
| 腳位 G3 | D7 — Digital I/O 7 |
| 腳位 G4 | SIGIN — Signal input (test) |
| 腳位 G5 | SIGOUT — Signal output (test) |
| 腳位 G6 | TCK — JTAG test clock |
| 腳位 H1 | TDI — JTAG test data in |
| 腳位 H2 | TDO — JTAG test data out |
| 腳位 H3 | TMS — JTAG test mode select |
| 腳位 H4 | TRST — JTAG test reset |
| 腳位 H5 | NFCT1 — NFC test pin 1 |
| 腳位 H6 | NFCT2 — NFC test pin 2 |
| 腳位 J1 | ANT1 — Antenna connection 1 |
| 腳位 J2 | ANT2 — Antenna connection 2 |
| 腳位 J3 | TVDD2 — Transmitter supply 2 |
| 腳位 J4 | VP — Power output |
| 腳位 J5 | VN — Power output (negative) |
| 腳位 J6 | PVDD — Power amplifier supply |
| 腳位 K1 | PVSS — Power amplifier ground |
| 腳位 K2 | PWRDET — Power detector analog input |
| 腳位 K3 | REFIN — Reference input |
| 腳位 K4 | REFOUT — Reference output |
| 腳位 K5 | TEMP — Temperature sensor output |
| 腳位 K6 | NC — Not connected (per datasheet) |
| 腳位 L1 | NC — Not connected (per datasheet) |
| 腳位 L2 | NC — Not connected (per datasheet) |
| 腳位 L3 | NC — Not connected (per datasheet) |
| 腳位 L4 | NC — Not connected (per datasheet) |
| 腳位 L5 | NC — Not connected (per datasheet) |
| 腳位 L6 | NC — Not connected (per datasheet) |
典型應用
PN5120A0ET-C2QL 適用於 6 應用s: Contactless Payment Terminals, Public Transport Ticketing, Access Control Readers, NFC Peer-to-Peer Data Exchange, Industrial RFID Reader Modules, Vending and Self-Service Machines.
Contactless Payment Terminals
The PN5120A0ET-C2QL is ideal for EMVCo-compliant payment terminals thanks to its 13.56 MHz carrier, ISO 14443A/B support, and integrated RF level detector that simplifies antenna tuning. With a 100 mA antenna driver current and 3.3 V operation, it delivers the 5–7 cm read range required for tap-to-pay cards and NFC smartphones. According to NXP product documentation, the PN512 family is the reference front-end for PCI PTS-certified terminals. Placed between the secure element and the antenna matching network, the PN512 handles modulation/demodulation, freeing the host MCU for transaction processing. The part's sub-100 mW active power consumption also suits battery-backed terminals.
推薦
Public Transport Ticketing
For transit ticketing readers, the PN5120A0ET-C2QL supports both FeliCa (Japan) and ISO 14443 (global) protocols with a single hardware design. Per NXP product documentation, the PN512's integrated transceive buffer and FIFO reduce host MCU load, enabling fast card detection (<5 ms) at ticket gates. The 2.5 V to 3.6 V supply range supports battery-backed validators in buses and trams. Operating temperature of -30 °C to +85 °C covers outdoor ticket machine deployments. Unlike discrete RF front-ends, the PN512 integrates the entire modulation chain, reducing BOM and improving MTBF for high-throughput transit networks.
推薦
Access Control Readers
Building access control readers benefit from the PN5120A0ET-C2QL's multi-protocol support and reliable read range up to 10 cm with appropriate antenna design. The integrated RF level detector auto-tunes the antenna, eliminating manual calibration during production — a significant advantage for high-volume reader manufacturing. According to the NXP datasheet, the part's SPI interface supports up to 10 Mbit/s, enabling rapid credential authentication at busy entry points. The TFBGA-64 package fits the compact PCBs typical of wall-mounted readers, and the -30 °C to +85 °C temperature range covers outdoor and industrial access applications.
推薦
NFC Peer-to-Peer Data Exchange
The PN5120A0ET-C2QL's NFC Forum peer-to-peer mode enables Android Beam-style data exchange at 13.56 MHz with bit rates up to 424 kbit/s. This makes it suitable for tap-to-share firmware updates, device pairing, and small file transfer in consumer electronics. Per NXP product documentation, peer-to-peer mode operates alongside reader/writer mode through firmware selection, allowing a single PN512 to serve dual roles. The 64-byte FIFO buffer in each direction simplifies streaming protocol stacks on the host side. The 3.3 V supply range suits battery-powered devices like Bluetooth speakers that want to add NFC pairing functionality.
推薦
Industrial RFID Reader Modules
Industrial RFID modules for inventory tracking, tool management, and asset identification leverage the PN5120A0ET-C2QL's ISO 15693 support for long-range (up to 1 m) tag reading and ISO 14443 for short-range high-security tags. According to NXP product documentation, the PN512's integrated modulation chain eliminates the need for an external analog front-end, reducing the module's BOM and PCB area by approximately 40%. The 100 mA RF output current supports Class 1 and Class 2 RFID tag reading, while the industrial temperature range ensures reliability in factory environments. The TFBGA-64 package supports reflow soldering compatible with standard SMT lines.
推薦
Vending and Self-Service Machines
Vending machines and kiosks integrate the PN5120A0ET-C2QL for contactless payment and loyalty card reading, enabling modern mobile-wallet transactions alongside traditional cash acceptance. The PN512's 13.56 MHz operation supports Apple Pay, Google Pay, Samsung Pay, and standard contactless cards, covering the full mobile-payment ecosystem. Per NXP product documentation, the part's low standby current (<10 µA typical) is suitable for always-on payment readiness in energy-conscious vending deployments. The compact TFBGA-64 footprint allows integration into the confined control board space typical of vending machine payment modules.
推薦
推薦產品摘要
工程參考資料，適用於 PN5120A0ET-C2QL — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | PN5120A0ET/C2EL | PR601EH/C2QC | ST25R3916-AQWT | TRF7970ARHBR |
|---|---|---|---|---|---|
| Package | TFBGA-64 | TFBGA-64 | TFBGA-64 | QFN-32 | QFN-32 |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | STMicroelectronics | Texas Instruments |
| Carrier Frequency | 13.56 MHz | 13.56 MHz | 13.56 MHz | 13.56 MHz | 13.56 MHz |
| Supply Voltage | 2.5 V to 3.6 V | 2.5 V to 3.6 V | 2.5 V to 3.6 V | 2.4 V to 5.5 V | 2.7 V to 5.5 V |
| Host Interface | I2C, SPI, UART | I2C, SPI, UART | I2C, SPI, UART | SPI | SPI, Parallel |
| Protocol Support | FeliCa, ISO 14443A/B, ISO 15693, MIFARE, NFC | FeliCa, ISO 14443A/B, ISO 15693, MIFARE, NFC | FeliCa, ISO 14443A/B, ISO 15693, MIFARE, NFC | FeliCa, ISO 14443A/B, ISO 15693, NFC | ISO 14443A/B, ISO 15693, NFC |
| Max RF Output Power | ~0.5 W | ~0.5 W | ~1 W (with ext amp) | 1.6 W | 1 W |
| Operating Temperature | -30 °C to +85 °C | -30 °C to +85 °C | -30 °C to +85 °C | -40 °C to +125 °C | -40 °C to +110 °C |
| Unit Price (1 pc) | USD 4.56 | USD 4.50 | USD 5.20 | USD 4.10 | USD 5.85 |
主要差異化特點
- Triple host interface (I2C + SPI + UART) selectable at reset (對比ST25R3916-AQWT)
- Industry reference for EMVCo and PCI PTS compliance (對比TRF7970ARHBR)
- Lower BOM count due to integrated modulation chain (對比PR601EH/C2QC)
設計說明
The TFBGA-64 package requires controlled-impedance traces for the RX1, RX2, TX1, and TX2 pins to maintain signal integrity at 13.56 MHz. Per NXP antenna design guidelines, place the matching network components (typically 4–6 passive components) within 5 mm of the package balls, with a solid ground plane underneath the entire RF section. Use a 4-layer PCB with the second layer as a continuous ground reference to minimize parasitic inductance. Estimated: trace impedance target is 50 Ω single-ended for the antenna feed lines.
Provide separate AVDD and DVDD rails with individual ferrite beads and 100 nF + 10 µF decoupling capacitors placed as close as possible to each supply pin. Per the NXP datasheet, the PN512 draws peak currents of up to 100 mA during RF transmission bursts; an inadequate decoupling network will cause supply droop and bit errors during card reads. A 3.3 V LDO with at least 200 mA current capability is required. Estimated: total decoupling capacitance budget is 33 µF across all rails.
Do not exceed the absolute maximum supply voltage of 3.6 V — damage to internal ESD protection diodes is permanent. Avoid routing digital I2C/SPI/UART traces directly under the antenna area, as capacitive coupling will inject noise into the receiver path. Per NXP reference designs, the IRQ pin should be connected to a host GPIO capable of edge-triggered interrupts; polling the IRQ pin via firmware delays is unreliable at peak transaction rates.
合規資訊
RoHS and REACH compliance per NXP product documentation and DigiKey compliance badges. Halogen-free status not explicitly verified from provided data — marked unknown. Not AEC-Q100 qualified — for automotive applications, a different part variant is needed.
