XR-2211A Datasheet, PDF (3/24 Pages) Exar Corporation – FSK Demodulator/ Tone Decoder

PIN CONFIGURATION
V_CC 1
INP 2
LDF ³
GND 4
LDOQN 5
LDOQ ⁶
DO 7
14 TIM C1
13 TIM C2
12 _{TIM R}
11 LDO
10 V_REF
9 _NC
8 COMP I
14 Lead PDIP (0.300”)
XR-2211A
V_CC
1
14
TIM C1
INP
2
13
TIM C2
LDF
3
12
TIM R
GND
4
11
LDO
LDOQN
5
10
V_REF
LDOQ
6
9
NC
DO
7
8
COMP I
14 Lead SOIC (Jedec, 0.150”)
PIN DESCRIPTION
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Symbol
V_CC
INP
LDF
GND
LDOQN
LDOQ
DO
COMP I
NC
V_REF
LDO
TIM R
TIM C2
TIM C1
Type
-
I
O
-
O
O
O
I
-
O
O
I
I
I
Description
Positive power supply.
Receive Analog Input.
Lock detect filter.
Ground pin.
Lock detect output not. This output will be low if the VCO is in the capture range.
Lock detect output. This output will be high if the VCO is in the capture range.
Data output. Decoded FSK output.
FSK Comparator Input.
Not connected.
Internal voltage reference. The value of V_REF is V_CC/2 - 650mV.
Loop detect output. This output provides the result of the quadrature phase detection.
Timing resistor input. This pin connects to the timing resistor of the VCO.
Timing capacitor input. The timing capacitor connects between this pin and pin 14.
Timing capacitor input. The timing capacitor connects between this pin and pin 13.
Rev. 1.01
3