MAX3120EUA+ Maxim Integrated Products, MAX3120EUA+ Datasheet

IC TXRX INFRARED IRDA 8-UMAX

MAX3120EUA+

Manufacturer Part Number
MAX3120EUA+
Description
IC TXRX INFRARED IRDA 8-UMAX
Manufacturer
Maxim Integrated Products
Type
Transceiverr
Datasheet
1.MAX3120ESA.pdf (8 pages)

Specifications of MAX3120EUA+

Number Of Drivers/receivers
1/1
Protocol
Infrared (IRDA)
Voltage - Supply
3 V ~ 5.5 V
Mounting Type
Surface Mount
Package / Case
8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX3120 IrDA 1.2-compatible infrared transceiver
is optimized for battery-powered, space-constrained
applications. It consumes only 120µA while supporting
data rates up to 115kbps over a wide 3V to 5.5V oper-
ating range, and features a 10nA shutdown mode to
further extend battery life.
The MAX3120 reduces the space required for IrDA
applications by requiring a minimum of external compo-
nents: photodiode, infrared LED, and current-setting
resistor. Optical components are external to allow maxi-
mum flexibility in PC board design. The MAX3120 is
available in 8-pin µMAX and SO packages. The µMAX
package consumes half the board space of an 8-pin
SO.
19-1390; Rev 0; 10/98
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
TOP VIEW
IrDA Applications
Personal Digital Assistants (PDAs)
Palmtop Computers
Cell Phones
Hand-Held Equipment
Peripherals
PINC
GND
TXD
V
CC
________________________________________________________________ Maxim Integrated Products
1
2
3
4
General Description
MAX3120
MAX/SO
Pin Configuration
8
7
6
5
Applications
RXD
LEDC
PGND
SHDN
IrDA Infrared Transceiver
Low-Profile, 3V, 120µA,
DOUT
SCLK
MAX3120CUA
MAX3120CSA
MAX3120EUA
MAX3120ESA
DIN
CS
IrDA 1.2 Compatible: 2.4kbps to 115.2kbps
+3V to +5.5V Single-Supply Operation
Flexible Optics Selection and Layout
120µA Supply Current
10nA Shutdown Supply Current
200mA, High-Current Infrared LED Drive
PART
MAX3100
+3.3V
GND
V
CC
Typical Operating Circuit
-40°C to +85°C
-40°C to +85°C
TEMP. RANGE
RX
TX
0°C to +70°C
0°C to +70°C
Ordering Information
TXD
RXD
GND
V
CC
MAX3120
8 µMAX
8 SO
8 µMAX
8 SO
PIN-PACKAGE
SHDN
LEDC
PGND
PINC
Features
PIN
DIODE
LED
1

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MAX3120EUA+ Summary of contents

Page 1

... CC MAX3120 GND 3 PINC 4 MAX/SO ________________________________________________________________ Maxim Integrated Products For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800. For small orders, phone 1-800-835-8769. Low-Profile, 3V, 120µA, IrDA Infrared Transceiver IrDA 1.2 Compatible: 2.4kbps to 115.2kbps +3V to +5.5V Single-Supply Operation Flexible Optics Selection and Layout 120µ ...

Page 2

Low-Profile, 3V, 120µA, IrDA Infrared Transceiver ABSOLUTE MAXIMUM RATINGS (Referred to GND) V ...........................................................................-0.3V to +6V CC SHDN, LEDC ...................................................-0.3V to +6V TXD, RXD ............................................................-0. PGND ....................................................................-0.1V to +0.1V PINC....................................................................................10mA Continuous LEDC Current.................................................200mA Repetitive Pulsed LEDC Current (<90µs, ...

Page 3

ELECTRICAL CHARACTERISTICS (continued +3.0V to +5.5V MIN MAX PARAMETER SYMBOL IR TRANSMITTER Transmitter Rise Time Transmitter Fall Time Transmitter Output Resistance Off-Leakage Current Note 1: All supply current measurements are made ...

Page 4

Low-Profile, 3V, 120µA, IrDA Infrared Transceiver (T = +25°C, unless otherwise noted.) A AMBIENT PHOTODIODE CURRENT REJECTION vs. SUPPLY VOLTAGE 450 400 350 300 250 200 150 100 50 0 3.0 3.5 4.0 4.5 5.0 5.5 SUPPLY VOLTAGE (V) RXD ...

Page 5

A RXD OUTPUT vs. INFRARED INPUT 2V/div 2V/div 2 s/div V = 3.3V, 115.2kbps AT 1m DISTANCE, CC TERMIC BPV22NF, TRANSMIT POWER 200mW/sr PIN NAME 1 TXD IR Transmitter TTL/CMOS Data Input. High = ...

Page 6

Low-Profile, 3V, 120µA, IrDA Infrared Transceiver RXD TXD LEDC BANDPASS FILTER BIAS GND MAX3120 SHDN V CC Figure 1. Functional Diagram The MAX3120’s IR transmitter consists of a high-power MOS switch, capable of quickly switching 200mA with less than 2Ω ...

Page 7

Power-dissipation requirements of the MAX3120, IR LED, and R must be met based on maximum duty SET cycle and output current requirements. MAX3120 Power Dissipation = I SET · IR LED Power Dissipation = I SET SET 2 · R ...

Page 8

... Maxim reserves the right to change the circuitry and specifications without notice at any time. 8 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 8 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 8 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 8 © ...

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