AD9803 データシートの表示（PDF） - Analog Devices
部品番号
コンポーネント説明
メーカー
AD9803 Datasheet PDF : 19 Pages
| |||
REGISTER DESCRIPTION
(a) A-REGISTER: Modes of Operation (Power-On Default
Value = 11)
a1
a0
Modes
0
0
ADC-MODE
0
1
AUX-MODE
1
0
CCD-MODE
1
1
CCD-MODE
(b) B-REGISTER: Output Modes (Default = 00)
b1 b0
00
01
10
11
D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Normal
0101010101
1010101010
High Impedance
(c) C-REGISTER: Clock Modes (Default = 00)
c1 c0 SHP-SHD Clock Pulses Clamp Active Pulses
00
01
10
11
Active Low
Active Low
Active High
Active High
Active Low
Active High
Active Low
Active High
(d) D-REGISTER: Power-Down Modes (Default = 00)
Modes
d1
Normal
0
High Speed 0
Power-Down 1 1
Power-Down 2 1
d0 Description
0 Normal Operation
1 High Speed AUX-MODE
0 Reference Stand-By (Same Mode
as STBY Pin 18)
1 Total Shut-Down
(e) E-REGISTER: Clamp Level Selection (Default = 00)
CLP (0)
CLP (1)
CLP (2)
CLP (3)
e1 e0
00
01
10
11
Clamp Level
32 LSBs
48 LSBs
64 LSBs
16 LSBs
AD9803
(f) F-REGISTER: PGA Gain Selection (Default = 00 . . . 0)
f9 f8 f7 f6 f5 f4 f3 f2
AUX-Gain
Gain (0) 0 0 0 0 0 0 0 0
Gain (255) 1 1 1 1 1 1 1 1
Minimum
Maximum
(g) G-REGISTER: DAC1 Input (Default = 00 . . . 0)
g7 g6 g5 g4 g3 g2 g1 g0 DAC1 Output
Code (0) 0 0 0 0 0 0 0 0
Code (255) 1 1 1 1 1 1 1 1
Minimum
Maximum
(h) H-REGISTER: DAC2 Input (Default = 00 . . . 0)
h7 h6 h5 h4 h3 h2 h1 h0
Code (0) 0 0 0 0 0 0 0 0
Code (255) 1 1 1 1 1 1 1 1
DAC2 Output
Minimum
Maximum
(j) J-REGISTER: Even-Odd Offset Correction (Default = 0)
j0
Even-Odd Offset Correction
0
Offset Correction In Use
1
Offset Correction Not Used
(k) K-REGISTER: External PGA Gain Control (Default = 0)
k0
PGA Gain Control
0
External Voltage Control Through AUXCONT or
PGACONT1 and PGACONT2
1
Internal 10-Bit DAC Control of PGA Gain
(m) M-REGISTER: DAC1 & DAC2 pdn (Default = 0)
m0
Power-Down of 8-Bit DACs
0
8-Bit DACs Powered-Down
1
8-Bit DACs Operational
(f) F-REGISTER: PGA Gain Selection (Default = 00 . . . 0)
f9 f8 f7 f6 f5 f4 f3 f2 f1 f0
Gain (0) 0 0 0 0 0 0 0 0 0 0
Gain (1023) 1 1 1 1 1 1 1 1 1 1
CCD-Gain
Minimum
Maximum
REV. 0
–15–
Share Link: 