AD9553BCPZ Analog Devices Inc, AD9553BCPZ Datasheet - Page 36

• Manufacturer Part Number: AD9553BCPZ
• Description: IC INTEGER-N CLCK GEN 32LFCSP
• Manufacturer: Analog Devices Inc

Specifications of AD9553BCPZ

• Clock Ic Type: PLL Clock Driver
• Ic Interface Type: 3 Wire, Serial
• Frequency: 710MHz
• No. Of Outputs: 2
• Supply Current: 162mA
• Supply Voltage Range: 0V To 3.3V
• Digital Ic Case Style: LFCSP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AD9553
Address
0x0C
0x0D
VCO Control (Register 0x0E to Register 0x10)
Table 30.
Address
0x0E
0x0F
0x10
Bit
[7:3]
[2:0]
[7:6]
[5:1]
0
Bit
7
6
[5:3]
2
1
0
[7:2]
[1:0]
[7:1]
0
Bit Name
Unused
Charge pump clock div.
Antibacklash control
Unused
PLL lock detector power-down
Bit Name
Calibrate VCO
Enable ALC
ALC threshold
Enable SPI control of VCO
calibration
Boost VCO supply
Enable SPI control of VCO band
setting
VCO level control
Unused
VCO band control
Unused
Description
Unused.
Enables the PFD clock dividers (used for test only via test mux).
000 = test clocks disabled, normal operation (default).
001 = divide feedback clock by 2.
010 = divide PFD reference input clock by 2.
011 = divide PFD reference input and feedback clocks by 2.
100 = divide pump-up clock by 2.
101 = divide pump-up and feedback clocks by 2.
110 = divide pump-up and PFD reference input clocks by 2.
111 = divide feedback, pump-up, and pump-down clocks by 2.
Controls the PFD antibacklash period of the PLL. These bits are ineffective unless
Register 0x0B[6] = 1.
00 = minimum (default).
01 = low.
10 = high.
11 = maximum.
Unused.
Controls power-down of the PLL lock detector.
0 = lock detector active (default).
1 = lock detector powered down.
Description
Initiates VCO calibration (this is an autoclearing bit). This bit is ineffective unless
Register 0x0E[2] = 1.
Enables automatic level control (ALC) of the VCO.
0 = Register 0x0F[7:2] defines the VCO level.
1 = the device automatically controls the VCO level (default).
Controls the VCO ALC threshold detector level from minimum (000) to maximum
(111). The default is 110.
Enables the functionality of Register 0x0E[7].
0 = the device automatically performs VCO calibration (default).
1 = VCO calibration controlled by Register 0x0E[7].
Selects VCO supply voltage.
0 = normal supply voltage (default).
1 = increase supply voltage by 100 mV.
Controls VCO band setting functionality.
0 = the device automatically selects the VCO band (default).
1 = VCO band defined by Register 0x10[7:1].
Controls the VCO amplitude from minimum (00 0000) to maximum (11 1111). These
bits are ineffective unless Register 0x0E[6] = 0.
The default is 10 0000.
Unused.
Controls the VCO frequency band from minimum (000 0000) to maximum
(111 1111). These bits are ineffective unless Register 0x0E[0] = 1.
The default is 100 0000.
Unused.
Rev. A | Page 36 of 44