HI1260 Datasheet, PDF (7/13 Pages) Intersil Corporation – Triple 8-Bit, 35 MSPS, RGB, 3-Channel D/A Converter

HI1260
Test Circuits and Waveforms (Continued)
(MSB)
OUT D1
8-BIT
COUNTER
(TTL OUTPUT)
D2
(LSB)
D8
IN
MCLK
f = 35 MSPS
TTL LEVEL
RECTANGULAR
WAVE
D1 - D8
8 (R)
D1 - D8
8 (G)
D1 - D8
8 (B)
39 - 42
44 - 47
1-8
9 - 16
18
CLK
HI1260
19, 37, 43
DIGITAL RAMP WAVEFORM GENERATION
R_OUT
33
G_OUT
31
B_OUT
29
27
V_SET
24
+
-
V
23
33µF
20
12.5K
OSCILLOSCOPE
R_IN = 1MΩ
C_IN - 10_PF
BW = 20MHz
CLK
AGND DGND
D1 TO D8
2ns TO 10ns
AV_CC DV_CC
TIMING BETWEEN CLK AND DATA
FIGURE 2. MAXIMUM CONVERSION RATE TEST CIRCUIT
DV_CC
D1 - D8 _{39 - 42}
19, 37, 43
8 _(R)
8 _(G)
44 - 47
1-8
R_OUT
33
G_OUT
31
8 _(B)
9- 16
B_OUT
29
27 ^AVCC
V
V_REF
25
V_SET
24
3K
33µF
V
23
CLK TTL LEVEL
18
CLK
20
HI1260
FIGURE 3. OUTPUT VOLTAGE FULL SCALE PRECISION, RGB OUTPUT VOLTAGE FULL SCALE RATIO, AND OUTPUT ZERO OFF-
SET VOLTAGE TEST CIRCUITS
10-7