HA7210 Datasheet, PDF (12/15 Pages) Intersil Corporation – 10kHz to 10MHz, Low Power Crystal Oscillator

HA7210
Typical Performance Curves (Continued)
620
580 ^{F1 = 0, F2 = 0}
540
500
460
420
380
1000pF
1µF
340
300 _50Ω
260
2
3
HA7210
V_DD = 5V, V_SS = GND
436.5µA/V
180
178^o
170
160
100Ω
150
140
10K
100K
1M
10M
FREQUENCY (Hz)
FIGURE 35. TRANSCONDUCTANCE vs FREQUENCY
500
460 ^{F1 = 0, F2 = 1}
V_DD = 5V, V_SS = GND
420
380
311.6µA/V
340
300
180
260
1000pF
1µF
177^o
170
160
2
3
50Ω
HA7210
100Ω
150
140
130
10K
100K
1M
10M
FREQUENCY (Hz)
FIGURE 36. TRANSCONDUCTANCE vs FREQUENCY
240
F1 = 1, F2 = 0
220
V_DD = 5V, V_SS = GND
200
180
156.7µA/V
160
140
176.6^o
180
120
1000pF
1µF
170
100
160
2
3
50Ω
100Ω
150
HA7210
140
10K
100K
1M
FREQUENCY (Hz)
130
10M
FIGURE 37. TRANSCONDUCTANCE vs FREQUENCY
20
F1 = 1, F2 = 1
15
10
V_DD = 5V, V_SS = GND
6.56µA/V
5
180
0
170
1000pF
166^o
1µF
2
3
50Ω
100Ω
HA7210
10K
100K
FREQUENCY (Hz)
160
150
140
130
120
110
1M
FIGURE 38. TRANSCONDUCTANCE vs FREQUENCY
F1 = F2 = 1, V_DD = 5V, C_L = 18pF, T_A = 25^oC, f_OSC = 32.768kHz
60
55
EPSON PART #
C-001R32.768K-A
50
XTAL
45
NDK PART #
MX-38
R_S
2
3
40
OSC IN
OSC OUT
HA7210
35
0
20
40
60
80
100
120
R_S (kΩ)
NOTE: Figure 39 (Duty Cycle vs R_S at 32kHz) should only be used for 32kHz crystals. R_S may be used at other frequencies to adjust Duty Cycle
but experimentation will be required to find an appropriate value. The R_S value will be proportional to the effective series resistance of the crystal
being used.
NOTE: Refer to Test Circuit (Figure 1).
FIGURE 39. DUTY CYCLE vs R_S at 32kHz
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