Overview
The ADM3222ARWZ-REEL is a low-power, 3.3V RS-232 line driver/receiver produced by Analog Devices Inc. This high-speed, 2-channel RS-232/V.28 interface device operates from a single 3.3V power supply, making it ideal for battery-powered portable instruments. It conforms to the EIA-232E and CCITT V.28 specifications and supports data rates up to 460Kbps. The device features low power consumption and a shutdown facility, reducing the quiescent current to less than 0.5μA when in shutdown mode. The ADM3222ARWZ-REEL includes additional enable and shutdown circuitry, allowing for the three-state of receiver outputs and power-down of the charge pump and transmitter outputs.
Key Specifications
| Parameter | Value | Description |
|---|---|---|
| Operating Voltage | 3V to 5.5V | Range of the power supply voltage |
| Power Supply Current | 1.3mA (typical at no load) | VCC power supply current |
| Data Rate | Up to 460Kbps | Maximum data transmission rate |
| Transmitter Propagation Delay | 0.3μs (typical at RL = 3Kohm, CL = 1000pF) | Delay from transmitter input to output |
| Receiver Propagation Delay | 0.4μs (TPHL), 0.4μs (TPLH) (typical) | Delay from receiver input to output |
| Transition Region Slew Rate | 10V/μs (typical) | Slew rate of the transition region |
| Transmitter Skew | 30ns | Skew between transmitter outputs |
| Receiver Skew | 300ns | Skew between receiver outputs |
| Package Type | 18-lead SOIC-W | Package type and pin count |
| Operating Temperature | -40°C to +85°C | Temperature range for operation |
| ESD Protection | ±8 kV (Contact), ±15 kV (Air Gap), ±15 kV (HBM) | Electrostatic discharge protection levels |
Key Features
- Low power consumption with a shutdown facility to reduce quiescent current to less than 0.5μA.
- Operates from a single 3.3V power supply using four external 0.1μF charge pump capacitors.
- Conforms to EIA-232E and CCITT V.28 specifications.
- Supports data rates up to 460Kbps.
- Includes additional enable and shutdown circuitry for controlling receiver outputs and power-down of the charge pump and transmitter outputs.
- High slew rates for high-speed data transmission.
- Schmitt-trigger inputs with a hysteresis level of 0.4V for error-free reception.
- 18-lead SOIC-W package with an operating temperature range of -40°C to +85°C.
- ESD protection of ±8 kV (Contact), ±15 kV (Air Gap), and ±15 kV (HBM).
Applications
- General-purpose RS-232 data links.
- Battery-powered portable instruments.
- Printers.
- Palmtop computers and PDAs.
- High-speed data links for ISDN modem standards.
Q & A
- What is the operating voltage range of the ADM3222ARWZ-REEL?
The operating voltage range is from 3V to 5.5V.
- What is the maximum data rate supported by the ADM3222ARWZ-REEL?
The device supports data rates up to 460Kbps.
- How does the shutdown facility work in the ADM3222ARWZ-REEL?
The shutdown facility reduces the quiescent current to less than 0.5μA when the SD input is low, powering down the charge pump and transmitter outputs while keeping the receivers enabled unless disabled using the EN input.
- What type of package does the ADM3222ARWZ-REEL come in?
The device comes in an 18-lead SOIC-W package.
- What is the operating temperature range of the ADM3222ARWZ-REEL?
The operating temperature range is from -40°C to +85°C.
- What level of ESD protection does the ADM3222ARWZ-REEL have?
The device has ESD protection of ±8 kV (Contact), ±15 kV (Air Gap), and ±15 kV (HBM).
- How many charge pump capacitors are required for the ADM3222ARWZ-REEL?
Four external 0.1μF charge pump capacitors are required.
- What is the typical power supply current of the ADM3222ARWZ-REEL at no load?
The typical power supply current is 1.3mA at no load.
- Does the ADM3222ARWZ-REEL support high-speed data transmission?
Yes, it supports high-speed data transmission with high slew rates, suitable for data rates well in excess of the EIA/RS-232E specifications.
- What are some common applications of the ADM3222ARWZ-REEL?
Common applications include general-purpose RS-232 data links, battery-powered portable instruments, printers, palmtop computers, and PDAs.
