AD9142 datasheet(48/65 Pages) AD

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AD9142

Data Sheet

Rev. 0 | Page 48 of 64

PLL STATUS REGISTER

Address: 0x16, Reset: 0x00, Name: PLL_STATUS0

Table 36. Bit Descriptions for PLL_STATUS0

Bits

Bit Name

Settings

Description

Reset

Access

PLL_LOCK

PLL clock multiplier output is stable.

0x0

[3:0]

VCO_CTRL_VOLTAGE_READBACK

VCO control voltage readback. A binary value.

0x0

1111

The highest VCO control voltage.

0111

The mid value when a proper VCO band is selected. When

the PLL is locked, selecting a higher VCO band decreases this

value and selecting a lower VCO band increases this value.

0000

The lowest VCO control voltage.

PLL STATUS REGISTER

Address: 0x17, Reset: 0x00, Name: PLL_STATUS1

Table 37. Bit Descriptions for PLL_STATUS1

Bits

Bit Name

Settings

Description

Reset

Access

[5:0]

PLL_BAND_READBACK

Indicates the VCO band currently selected.

0x00

IDAC FS ADJUST LSB REGISTER

Address: 0x18, Reset: 0xF9, Name: IDAC_FS_ADJ0

Table 38. Bit Descriptions for IDAC_FS_ADJ0

Bits

Bit Name

Settings

Description

Reset

Access

[7:0]

IDAC_FULLSCALE_ADJUST_LSB

See Register 0x19.

0xF9

IDAC FS ADJUST MSB REGISTER

Address: 0x19, Reset: 0xE1, Name: IDAC_FS_ADJ1

Table 39. Bit Descriptions for IDAC_FS_ADJ1

Bits

Bit Name

Settings

Description

Reset

Access

[1:0]

IDAC_FULLSCALE_ADJUST_MSB

IDAC full-scale adjust, Bits[9:0] sets the full-scale current of

the IDAC. The full-scale current can be adjusted from 8.64 mA

to 31.68 mA. The default value (0x1F9) sets the full-scale

current to 20 mA.

0x1

QDAC FS ADJUST LSB REGISTER

Address: 0x1A, Reset: 0xF9, Name: QDAC_FS_ADJ0

Table 40. Bit Descriptions for QDAC_FS_ADJ0

Bits

Bit Name

Settings

Description

Reset

Access

[7:0]

QDAC_FULLSCALE_ADJUST_LSB

See Register 0x1B.

0xF9

AD9142 Datasheet(PDF) 48 Page - Analog Devices

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