Linear Technology DC2073A Series, Demo Manual

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dc2073af
DEMO MANUAL DC2073A
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Table 2. f
OSC
Frequency and N Divider Setting
LTC6905, DC2073A-A
f
OSC
=
168.5MHz •10k Ω
R
SET
+ 1.5MHZ

 

•
1
N
, R
SET
=
168.5MHz •10k Ω
N• f
OSC
–1.5MHz
N = 1 (JP1 to V
+
), 68.9MHz ≤ f
OSC
≤ 170MHz
N = 2 (JP1 to OPEN), 34.45MHz ≤ f
OSC
≤ 85MHz
N = 4 (JP1 to GND), 7.225MHz ≤ f
OSC
≤ 42.5MHz
LTC1799, DC2073A-B
f
OSC
=
10MHz
N
•
10k Ω
R
SET
, R
SET
=
10MHz
f
OSC
•
10k Ω
N
N = 1 (JP1 to GND), 500kHz ≤ f
OSC
≤ 20MHz
N = 10 (JP1 to OPEN), 50kHz ≤ f
OSC
≤ 2MHz
N = 100 (JP1 to V
+
), 5kHz ≤ f
OSC
≤ 200kHz
LTC6900, DC1073A-C
f
OSC
=
10MHz
N
•
20k
Ω
R
SET
, R
SET
=
10MHz
f
OSC
•
20k
Ω
N
N = 1 (JP1 to GND), 500kHz ≤ f
OSC
≤ 20MHz
N = 10 (JP1 to OPEN), 50kHz ≤ f
OSC
≤ 2MHz
N = 100 (JP1 to V
+
), 5kHz ≤ f
OSC
≤ 200kHz
LTC6905-133, DC2073A-D
f
OSC
=
133MHz
N
N = 1 (JP1 to V+), f
OSC
= 133MHz
N = 2 (JP1 to OPEN), f
OSC
= 66.7MHz
N = 4 (JP1 to GND), f
OSC
= 33.5MHz
LTC6905-10, DC2073A-E
f
OSC
=
100MHz
N
N = 1 (JP1 to V
+
), f
OSC
= 100MHz
N = 2 (JP1 to OPEN), f
OSC
= 50MHz
N = 4 (JP1 to GND), f
OSC
= 25MHz
LTC6905-96, DC2073A-F
f
OSC
=
96MHz
N
N = 1 (JP1 to V
+
), f
OSC
= 96MHz
N = 2 (JP1 to OPEN), f
OSC
= 48MHz
N = 4 (JP1 to GND), f
OSC
= 24MHz
LTC6905-80, DC2073A-G
f
OSC
=
80MHz
N
N = 1 (JP1 to V
+
), f
OSC
= 80MHz
N = 2 (JP1 to OPEN), f
OSC
= 40MHz
N = 4 (JP1 to GND), f
OSC
= 20MHz
LTC6906, DC2073A-H
f
OSC
=
1MHz
N
•
100k
Ω
R
SET
, R
SET
=
1MHz
f
OSC
•
100k
Ω
N
N = 1 (JP1 to GND), 0.1MHz ≤ f
OSC
≤ 1MHz
N = 3 (JP1 to OPEN), 33kHz ≤ f
OSC
≤ 333kHz
N = 10 (JP1 to V
+
), 10kHz ≤ f
OSC
≤ 100kHz
LTC6907, DC2073A-I
f
OSC
=
4MHz
N
•
50k
Ω
R
SET
, R
SET
=
4MHz
f
OSC
•
50k
Ω
N
N = 1 (JP1 to GND), 0.4MHz ≤ f
OSC
≤ 4MHz
N = 3 (JP1 to OPEN), 133kHz ≤ f
OSC
≤ 1.33MHz
N = 10 (JP1 to V
+
), 40kHz ≤ f
OSC
≤ 400kHz
LTC6908-1, DC2073A-J
Complementary Outputs (0°/180°) without Modulation:
250kHz ≤ f
OSC
≤ 5MHz, (JP1 to DIV/MOD)
f
OSC
=
10MHz
N
•
10k
Ω
R
SET
, R
SET
=
10MHz
f
OSC
•
10k
Ω
N
Spread Spectrum Modulation Rate:
(JP1 to GND), f
OSC
/16
(JP1 to OPEN), f
OSC
/32
(JP1 to V
+
), f
OSC
/64
LTC6908-1, DC2073A-K
Quadrature Outputs (0˚/90˚) without Modulation:
250kHz ≤ f
OSC
≤ 5MHz, (JP1 to DIV/MOD)
f
OSC
=
10MHz
N
•
10k Ω
R
SET
, R
SET
=
10MHz
f
OSC
•
10k Ω
N
Spread Spectrum Modulation Rate:
(JP1 to GND), f
OSC
/16
(JP1 to OPEN), f
OSC
/32
(JP1 to V
+
), f
OSC
/64