Linear DC2073A Demo Manual page 4

DEMO MANUAL DC2073A
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Table 2. f Frequency and N Divider Setting
OSC
LTC6905, DC2073A-A

168.5MHz •10kΩ
f =
 
OSC
R
SET
+
N = 1 (JP1 to V ), 68.9MHz ≤ f
N = 2 (JP1 to OPEN), 34.45MHz ≤ f
N = 4 (JP1 to GND), 7.225MHz ≤ f
LTC6900, DC1073A-C
10MHz 20kΩ
=
f •
OSC
N R
SET
N = 1 (JP1 to GND), 500kHz ≤ f
N = 10 (JP1 to OPEN), 50kHz ≤ f
+
N = 100 (JP1 to V ), 5kHz ≤ f
LTC6905-10, DC2073A-E
100MHz
f =
OSC
N
+
N = 1 (JP1 to V ), f
OSC
N = 2 (JP1 to OPEN), f
N = 4 (JP1 to GND), f
OSC
LTC6905-80, DC2073A-G
80MHz
f =
OSC
N
+
N = 1 (JP1 to V ), f
OSC
N = 2 (JP1 to OPEN), f
N = 4 (JP1 to GND), f
OSC
LTC6907, DC2073A-I
4MHz 50kΩ
f = •
OSC
N R
SET
N = 1 (JP1 to GND), 0.4MHz ≤ f
N = 3 (JP1 to OPEN), 133kHz ≤ f
+
N = 10 (JP1 to V ), 40kHz ≤ f
LTC6908-1, DC2073A-K
Quadrature Outputs (0˚/90˚) without Modulation:
250kHz ≤ f ≤ 5MHz, (JP1 to DIV/MOD)
OSC
10MHz 10kΩ
=
f •
OSC
N R
SET
Spread Spectrum Modulation Rate:
(JP1 to GND), f /16
OSC
(JP1 to OPEN), f /32
OSC
+
(JP1 to V ), f /64
OSC
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
1 168.5MHz •10kΩ
+1.5MHZ • , R =
 
SET
N N• f
≤ 170MHz
OSC
≤ 85MHz
OSC
≤ 42.5MHz
OSC
10MHz 20kΩ
=
, R •
SET
f N
OSC
≤ 20MHz
OSC
≤ 2MHz
OSC
≤ 200kHz
OSC
= 100MHz
= 50MHz
OSC
= 25MHz
= 80MHz
= 40MHz
OSC
= 20MHz
4MHz 50kΩ
, R = •
SET
f N
OSC
≤ 4MHz
OSC
≤ 1.33MHz
OSC
≤ 400kHz
OSC
10MHz 10kΩ
=
, R •
SET
f N
OSC
LTC1799, DC2073A-B
10MHz
=
f
OSC
N
– 1.5MHz
OSC
N = 1 (JP1 to GND), 500kHz ≤ f
N = 10 (JP1 to OPEN), 50kHz ≤ f
N = 100 (JP1 to V
LTC6905-133, DC2073A-D
133MHz
=
f
OSC
N
N = 1 (JP1 to V+), f
N = 2 (JP1 to OPEN), f
N = 4 (JP1 to GND), f
LTC6905-96, DC2073A-F
96MHz
f =
OSC
N
N = 1 (JP1 to V
N = 2 (JP1 to OPEN), f
N = 4 (JP1 to GND), f
LTC6906, DC2073A-H
1MHz
f =
OSC
N
N = 1 (JP1 to GND), 0.1MHz ≤ f
N = 3 (JP1 to OPEN), 33kHz ≤ f
N = 10 (JP1 to V
LTC6908-1, DC2073A-J
Complementary Outputs (0°/180°) without Modulation:
250kHz ≤ f
OSC
10MHz
f =
OSC
N
Spread Spectrum Modulation Rate:
(JP1 to GND), f
(JP1 to OPEN), f
+
(JP1 to V ), f
OSC
10kΩ 10MHz 10kΩ
=
• , R •
SET
R f N
SET OSC
≤ 20MHz
OSC
≤ 2MHz
OSC
+
), 5kHz ≤ f ≤ 200kHz
OSC
= 133MHz
OSC
= 66.7MHz
OSC
= 33.5MHz
OSC
+
), f = 96MHz
OSC
= 48MHz
OSC
= 24MHz
OSC
100kΩ 1MHz 100kΩ
• , R = •
SET
R f N
SET OSC
≤ 1MHz
OSC
≤ 333kHz
OSC
+
), 10kHz ≤ f ≤ 100kHz
OSC
≤ 5MHz, (JP1 to DIV/MOD)
10kΩ 10MHz 10kΩ
• , R = •
SET
R f N
SET OSC
/16
OSC
/32
OSC
/64
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