Rainbow Electronics AT88RF1354 - Manual (Page 21)

13.56 MHz Type B RF Reader
21
8547A −RFID−10/08
9. Typical Characteristics
The performance of AT88RF1354 is dependent on the reader circuit, the loop antenna design, the board layout, the
specifications of the passive components, the quality of the supply voltages, the quality of the ground, the electrical
noise in the system, and how the reader circuit is connected to the other system components. The specifications that
are affected by these factors are included in this section as typical characteristics since they cannot be guaranteed in
all situations.
It is recommended that AT88RF1354 be used exactly as described in the reference designs in the AT88RF1354
Application Notes. Each reference design has been optimized for reliable, robust communications with cards and
tags with antenna dimensions within a specified size range. The reference designs described in the AT88RF1354
Application Notes include schematics, board designs, and a complete bill of materials. Gerber files of the PCB layout
are available.
Atmel does not provide applications engineering support for customer implementations that deviate from the
reference designs; it is strongly recommended that the AT88RF1354 reference designs be implemented exactly as
provided. Any modification to the board layout or deviation from the bill of materials will impact both electrical
performance and radiated emissions.
9.1. Supply Current
Tc = -40° to +85° C (unless otherwise noted) (1)
V
CC
and V
CC_ANT
= 3.0
to 3.6 V
V
CC
and V
CC_ANT
=
4.5 to 5.5 V Symbol Parameter Condition
Min Typical Max Min Typical Max
Units
Idle, No SCK clock, CLKO Disabled 10 15 mA
Idle, No SCK clock, CLKO Enabled mA
Active, No SCK, RF ON, CLKO Enabled mA
Active, SCK = 100kHz, CLKO Enabled mA
ICC Power Supply Current
Active, SCK = 1 MHz, CLKO enabled mA
Idle, RF Disabled 1 2 mA
Idle, RF Enabled (TXP = 0 b) mA
Idle, RF Enabled (TXP = 1 b) 200 250 mA
Active, RF Enabled, Transmitting (TXP = 0 b) mA
ICC_ANT Power Supply Current
Active, RF Enabled, Transmitting (TXP = 1 b) mA
Idle, RF Disabled > RF Enabled (TXP = 0 b) V / uS
ICC_ANT Slew Rate (4)
Idle, RF Disabled > RF Enabled (TXP = 1 b) V / uS
Note: 1. Typical values at Tc = 35° C. Maximum values are characterized values and not test limits in production.
2. The total D.C. supply current is ICC + ICC_ANT
3. Supply current is dependent on the reader circuit design, PCB layout, and component specifications.
All values in table measured on an Atmel reference design.
4. ICC_ANT current increases rapidly when the RF ON Command is sent. The rate of ICC_ANT current
change is the slew rate.
All values are preliminary and will be updated after characterization.