AD6650BBC Analog Devices Inc, AD6650BBC Datasheet - Page 33

• Manufacturer Part Number: AD6650BBC
• Manufacturer: Analog Devices Inc

Specifications of AD6650BBC

• Operating Temperature (max): 85C
• Operating Temperature Classification: Commercial
• Operating Supply Voltage (typ): 3.3V
• Lead Free Status / Rohs Status: Not Compliant

REGISTER MAP
Table 18. Memory Map
Reg.
(Hex)
0
1
2
3
4
5
6
7
8
9
A
Mnemonic
Clock Divider Control
PLL Register 0
PLL Register 1
PLL Register 2
PLL Register 3
Clamp Control
Reserved
Reserved
Reserved
Reserved
Coarse DC Correction
5 to 2: Tweak Gain
1: Clamp Disable B
0: Clamp Disable A
3: Cal Now B
2: Cal Now A
1: PN_EN
0: Coarse DCC Enable
Bit
Width
1
22
22
22
22
6
4
1
1
8
8
8
2
4
1
1
1
1
Description
Power-up value is 1’b1.
PLL Control Register 0.
PLL Control Register 1.
PLL Control Register 2.
PLL Control Register 3.
Various VGA control signals.
Provides ±1.6 dB of additional gain in VGA in
0.2 dB steps.
Disables clamps at the output of the VGA for
Channel B.
Disables clamps at the output of the VGA for
Channel A.
Reserved.
Reserved.
Reserved.
Must be written 0.
Coarse dc correction control registers.
Calibrate coarse dc correction for the
Channel B. Coarse dc correction occurs
automatically at start-up if Bit 0 of the
AutoCalibration control register is set high.
Calibrate coarse dc correction for the
Channel A. Coarse dc correction occurs
automatically at start-up if Bit 0 of the
AutoCalibration control register is set high.
Enables the PN sequence generator to test
the digital block.
Enables coarse DCC. This register must be
held high during start-up sequence for
coarse dc correction to occur.
Rev. A | Page 33 of 44
Additional Information
Code
0
1
See Table 19
See
See Table 21
See Table 22
Power-up value is 6’b100011
Code
0
1
2
.
.
7
8
9
.
.
14
15
Code
0
1
0
1
Power-up value is 2’b00
Power-up value is 4’b0000
Code
0
1
0
1
0
1
Code
0
1
Must be written 8’b00000000
Must be written 8’b00000000
Must be written 8’b00010001
Table 20
Result
Bypass
Divide-by-2
Gain (dB)
+1.6 dB
+1.4 dB
+1.2 dB
.
.
+0.2 dB
0 dB
−0.2 dB
.
.
−1.2 dB
−1.4 dB
Result
Enable clamp
Disable clamp
Enable clamp
Disable clamp
Result
Disabled
Recalibrate
Disabled
Recalibrate
Disabled
Enable PN
sequence
generator
Result
Disabled
DCC enabled
AD6650