SR176A5T1GE STMicroelectronics, SR176A5T1GE Datasheet - Page 27

• Manufacturer Part Number: SR176A5T1GE
• Manufacturer: STMicroelectronics

Specifications of SR176A5T1GE

• Operating Temperature (max): 85C
• Operating Temperature Classification: Commercial
• Lead Free Status / RoHS Status: Compliant

SR176
8
DC and ac parameters
This section summarizes the operating and measurement conditions, and the dc and ac
characteristics of the device. The parameters in the dc and ac characteristic tables that
follow are derived from tests performed under the Measurement Conditions summarized in
the relevant tables. Designers should check that the operating conditions in their circuit
match the measurement conditions when relying on the quoted parameters.
Table 6.
Table 7.
Table 8.
1. All timing measurements were performed on a reference antenna with the following characteristics:
MI
Symbol
Symbol
t
RFR
Symbol
C
V
t
External size: 75 mm x 48 mm
Number of turns: 3
Width of conductor: 1 mm
Space between 2 conductors: 0.4 mm
Value of the coil: 1.4 µH
Tuning Frequency: 14.4 MHz.
V
t
MIN CD
CARRIER
RFSBL
RET
TUN
T
CC
f
t
t
t
t
A
CC
DR
JIT
f
t
t
t
DA
, t
W
S
0
1
2
RFF
Regulated voltage
Retromodulation induced voltage
Internal tuning capacitor
Ambient operating temperature
Operating conditions
DC characteristics
AC characteristics
External RF signal frequency
Carrier modulation index
10% rise and fall time
10% modulation pulse width
ASK modulation data jitter
Minimum time from carrier
generation to first data
Subcarrier frequency
Antenna reversal delay
Synchronization delay
Answer to new request delay
Time between request
characters
Time between answer
characters
Programming time for WRITE
Parameter
Parameter
Parameter
(1)
A3, A4, A5
Coupler to SR176
Coupler to SR176
SR176 to Coupler
From H-field Min
MI=(A-B)/(A+B)
ETU = 128/f
Wafer
ISO 10373-6
10% to 90%
13.56 MHz
Condition
Condition
14 ETU
f
128/f
128/f
CC
/16
S
S
CC
Min.
–20
–20
Min
2.5
20
DC and ac parameters
13.553
Min
132
0.5
10
- 2
40
0
Typ
Max.
64
847.5
9.44
85
85
151
151
0
13.567
Max
+ 2
1.5
14
57
5
Max
3.5
Unit
°C
°C
MHz
Unit
kHz
Unit
27/35
ms
mV
µs
µs
µs
µs
µs
µs
µs
µs
µs
%
pF
V