ADM222ARZ - 2/2 RS-232 Transceiver 200kbps | Analog Devices
MPN: ADM222ARZ ✓ Hoạt độngADM222ARZ Tóm tắt
RS-232 transceivers are interface ICs that convert logic-level signals to RS-232 voltage levels for serial communication. They are part of the interface IC family, which also includes RS-485, CAN, and USB transceivers. The ADM222ARZ specifically provides the electrical signaling and protection required for legacy serial ports, enabling communication between microcontrollers and peripherals such as modems, GPS modules, and industrial equipment.
Key features include a 200 kbps data rate, 0.1 µF charge pump capacitors, and a shutdown mode with 0.1 µA supply current. The device is fully compliant with EIA-232E standards and features a wide operating temperature range of -40°C to +85°C. The 18-pin SOIC-W package is suitable for space-constrained designs while providing adequate thermal performance.
Technically, the ADM222ARZ uses a CMOS charge pump architecture to generate ±10 V RS-232 levels from a single 5 V supply. The internal charge pump requires only four external 0.1 µF capacitors, reducing board space and cost compared to older designs requiring larger capacitors. The receiver inputs tolerate up to ±30 V, providing robust protection against voltage spikes on the serial line.
Typical applications include industrial automation, point-of-sale terminals, medical devices, and any system requiring reliable RS-232 communication. The shutdown feature is particularly useful in battery-powered devices where power conservation is critical.
When designing with the ADM222ARZ, ensure that the charge pump capacitors are placed close to the V+ and V- pins to minimize noise and maintain proper voltage generation. The shutdown pin can be driven by a microcontroller GPIO to enter low-power mode when the serial port is idle.
Bộ thay thế dễ dàng lắp đặt cho ADM222ARZ — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với ADM222ARZ (cùng hình factor và footprint) — khác nhau ở Package, Mounting Type, Product Type, Transmission Rate.
ADM232AARNZ
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADM232AANZ
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADM202JRNZ
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MAX232ACPE
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
SP232ACN
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
ADM222ARZ Thông số kỹ thuật
| Number of Drivers | 2 |
| Number of Receivers | 2 |
| Tốc độ dữ liệu | 200 kbps |
| Điện áp cung cấp | 5 V |
| Charge Pump Capacitors | 0.1 µF |
| Shutdown Supply Current | 0.1 µA |
| Khoảng nhiệt độ hoạt động | -40°C to +85°C |
| Hộp | 18-SOIC W |
| Kiểu lắp đặt | Surface Mount |
| Receiver Input Voltage Tolerance | ±30 V |
| Trạng thái RoHS | Compliant |
| REACH Status | Compliant |
| AEC-Q100 | Not qualified |
| Lead-Free | Yes |
Cấu hình chân ADM222ARZ
| Chân 1 | C1+ — Charge pump capacitor positive terminal |
| Chân 2 | V+ — Positive charge pump output |
| Chân 3 | C1- — Charge pump capacitor negative terminal |
| Chân 4 | C2+ — Charge pump capacitor positive terminal |
| Chân 5 | C2- — Charge pump capacitor negative terminal |
| Chân 6 | V- — Negative charge pump output |
| Chân 7 | T2OUT — Transmitter 2 output |
| Chân 8 | R2IN — Receiver 2 input |
| Chân 9 | R2OUT — Receiver 2 output |
| Chân 10 | T2IN — Transmitter 2 input |
| Chân 11 | T1IN — Transmitter 1 input |
| Chân 12 | R1OUT — Receiver 1 output |
| Chân 13 | R1IN — Receiver 1 input |
| Chân 14 | T1OUT — Transmitter 1 output |
| Chân 15 | GND — Ground |
| Chân 16 | VCC — Power supply (5V) |
| Chân 17 | SHDN — Shutdown control (active low) |
| Chân 18 | NC — No connect |
Ứng dụng tiêu biểu
ADM222ARZ phù hợp cho 6 Áp dụngs: Industrial Automation, Point-of-Sale Terminals, Medical Devices, Networking Equipment, Test and Measurement, Consumer Electronics.
Industrial Automation
The ADM222ARZ provides reliable RS-232 communication in industrial automation systems, such as PLCs and CNC machines. Its 200 kbps data rate and ±30 V receiver input tolerance ensure robust data transfer in noisy environments. The shutdown mode reduces power consumption when the serial port is idle, which is beneficial for energy-efficient factory floors. The wide operating temperature range of -40°C to +85°C allows deployment in harsh industrial settings without additional cooling.
Được đề xuất
Point-of-Sale Terminals
In point-of-sale (POS) terminals, the ADM222ARZ enables communication between the main processor and peripherals like barcode scanners, receipt printers, and cash drawers. Its 5 V operation and 0.1 µF charge pump capacitors simplify power supply design, while the shutdown pin helps meet energy efficiency standards. The 18-pin SOIC-W package fits compact POS hardware, and the 200 kbps data rate is sufficient for transaction data transfer.
Được đề xuất
Medical Devices
The ADM222ARZ is used in medical devices such as patient monitors and diagnostic equipment for serial communication with computers. Its low shutdown current of 0.1 µA is critical for battery-operated portable medical devices, extending operational life. The device's compliance with EIA-232E standards ensures interoperability with legacy medical systems. The wide temperature range supports reliable operation in clinical environments.
Được đề xuất
Networking Equipment
In networking equipment like routers and switches, the ADM222ARZ provides console management ports for configuration and diagnostics. Its 200 kbps data rate is adequate for console commands, and the shutdown mode reduces power when the console is not in use. The 5 V supply is common in networking hardware, and the 18-pin SOIC-W package is suitable for dense PCB layouts. The ±30 V receiver input tolerance protects against voltage spikes on long serial cables.
Được đề xuất
Test and Measurement
The ADM222ARZ is employed in test and measurement instruments such as oscilloscopes and multimeters for PC connectivity. Its high-speed 200 kbps data rate enables fast data logging, while the shutdown mode conserves power in battery-operated field instruments. The device's robust ESD protection (as per datasheet) ensures reliability in lab environments. The 18-pin SOIC-W package is easy to integrate into existing designs.
Được đề xuất
Consumer Electronics
In consumer electronics like GPS units and digital cameras, the ADM222ARZ enables serial communication with PCs for data transfer and firmware updates. Its low shutdown current of 0.1 µA is ideal for battery-powered devices, and the 5 V operation is compatible with common logic levels. The small 0.1 µF capacitors reduce board space, and the 18-pin SOIC-W package is suitable for compact consumer products.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ADM222ARZ — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | ADM232AARNZ | ADM232AANZ | ADM202JRNZ | MAX232ACPE | SP232ACN |
|---|---|---|---|---|---|---|
| Package | 18-SOIC W | 16-SOIC | 16-DIP | 16-SOIC | 16-DIP | 16-SOIC |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Maxim Integrated | MaxLinear |
| Number of Drivers | 2 | 2 | 2 | 2 | 2 | 2 |
| Number of Receivers | 2 | 2 | 2 | 2 | 2 | 2 |
| Data Rate | 200 kbps | 200 kbps | 200 kbps | 200 kbps | 120 kbps | 120 kbps |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V |
| Shutdown Pin | Yes | No | No | No | No | No |
| Operating Temperature | -40°C to +85°C | -40°C to +85°C | -40°C to +85°C | -40°C to +85°C | 0°C to +70°C | 0°C to +70°C |
Bảo phân biệt quan trọng
- Integrated shutdown pin (vsADM232AARNZ)
- Higher data rate (vsMAX232ACPE)
- Wider operating temperature range (vsSP232ACN)
Ghi chú thiết kế
Place the charge pump capacitors (C1, C2) as close as possible to the V+ and V- pins to minimize parasitic inductance and ensure stable voltage generation. Use 0.1 µF ceramic capacitors with low ESR for optimal performance. Keep the traces short and wide to reduce noise.
The ADM222ARZ operates from a single 5 V supply. Ensure the supply is clean and well-decoupled with a 0.1 µF capacitor close to the VCC pin. The shutdown pin can be used to reduce supply current to 0.1 µA when the transceiver is idle, which is beneficial for battery-powered designs.
Do not exceed the receiver input voltage tolerance of ±30 V, as this can damage the device. Also, ensure the shutdown pin is properly driven; leaving it floating may cause unpredictable operation. Refer to the Analog Devices datasheet for the recommended shutdown pin connection.
Thông tin tuân thủ
RoHS and REACH compliance based on Analog Devices product documentation. AEC-Q100 not qualified for automotive use.
