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HA7210_05 Datasheet, PDF (2/15 Pages) Intersil Corporation – 10kHz to 10MHz, Low Power Crystal Oscillator
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HA7210
Simplified Block Diagram
VDD
1 (NOTE 2)
8
ENABLE
EXTERNAL CRYSTAL
OSC IN 2
3 OSC OUT
RF
VDD
VDD - 1.4V
VDD - 2.2V
VDD - 3.0V
VDD - 3.8V
IBIAS
VDD
6
FREQ 1
VDD
7
FREQ 2
(NOTE 2)
(NOTE 2)
S1A
S2
S3
S4
1 OF 4
DECODE
15pF
S1B
VRN
+
-
BUFFER AMP
VDD
15pF
S1C
VDD
VRN
VDD
LEVEL
SHIFTER
OUTPUT
5
BUFFER
4 VSS
VDD
IN
P
RF
P
N
VRN
OSCILLATOR
OUT
FREQUENCY SELECTION TRUTH TABLE
ENABLE
FREQ 1
FREQ 2
SWITCH
1
1
1
S1A, S1B, S1C
1
1
0
S2
1
0
1
S3
1
0
0
S4
0
X
X
X
NOTE:
2. Logic input pull-up resistors are constant current source of 0.4µA.
OUTPUT RANGE
10kHz - 100kHz
100kHz - 1MHz
1MHz - 5MHz
5MHz - 10MHz+
High Impedance
2
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