RFHCS362F-I/SS Microchip Technology, RFHCS362F-I/SS Datasheet - Page 7

• Manufacturer Part Number: RFHCS362F-I/SS
• Description: IC CODE HOPPNG ENCDR W/RF 20SSOP
• Manufacturer: Microchip Technology

Specifications of RFHCS362F-I/SS

• Frequency: 310MHz ~ 440MHz
• Applications: Automotive, Building Access, Garage Openers
• Modulation Or Protocol: ASK, FSK
• Data Rate - Maximum: 3.3 kbps
• Power - Output: -12dBm ~ 2dBm
• Current - Transmitting: 11.5mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Voltage - Supply: 2.2 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Memory Size: -

4. Module: ADC
EQUATION 7-1:
 2010 Microchip Technology Inc.
Corrected values for the acquisition time example
for the 8-bit ADC used by this device are shown
below.
The value for T
Solving for T
Therefore:
Assumptions:
T
V
V
ACQ
V
T
AP PLIE D
AP P LI ED
ACQ
AP P LIED
T
C
C
=
=
=
:
=
=
C
=
=
=
5
ACQUISITION TIME EXAMPLE
Temperature
–
can be approximated with the following equations:
1.12
–
7.37
ΜS
10pF 1k
5 µs


Amplifier Settling Time
T
C






1
AMP
1 e
1 e
HOLD
+
µs
µs
–
–
–
+
1.12

------ -
511
+
T
1

–
--------- -
–
-------- -
RC
RC
C
R

T
ΜS
T
Tc


IC
C
+
C
+






+
=
+

+
7k
=

T
=
Temperature - 25°C
=

R
V


COFF
50°C- 25°C
SS
50°C and external impedance of 10k
CHOLD
V
V
+
+
CHOLD
A P PLIE D
10k
R
S
+

 ln(1/511)

Hold Capacitor Charging Time
ln(0.0019569)
 0.05



1
–
------ -
511
ΜS
 0.05µs/°C

1
/°C




;[2] V
;combining [1] and [2]
;[1] V


CHOLD
CHOLD

5.0V V
+
charged to within 1/2 lsb
charge response to V
Temperature Coefficient
DD
PIC16F716
DS80184F-page 7
APPLIED