AD6672 データシートの表示（PDF） - Analog Devices

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AD6672

IF Receiver

Analog Devices 

Data Sheet

Addr

(Hex)

0x14

Register

Name

Output mode

Bit 7

(MSB)

Open

Bit 6

Open

0x15 Output adjust Open

Open

0x16 Clock phase

control

0x17 DCO output

delay

Invert

DCO

clock

Enable

DCO

clock

delay

Open

Open

0x18 Input span

select

Open

Open

0x19 User Test

Pattern 1 LSB

0x1A User Test

Pattern 1 MSB

0x1B User Test

Pattern 2 LSB

0x1C User Test

Pattern 2 MSB

0x1D User Test

Pattern 3 LSB

0x1E User Test

Pattern 3 MSB

0x1F User Test

Pattern 4 LSB

0x20 User Test

Pattern 4 MSB

Digital Feature Control Registers

0x3C NSR control

Open

Open

0x3E NSR tuning

word

Open

Open

AD6672

Bit 5

Open

Open

Open

Open

Open

Bit 4

Output

enable bar

0 = on

1 = off

Open

Open

Bit 3

Bit 2

Bit 1

Bit 0

(LSB)

Open

Output

invert

0 = normal

(default)

1=

inverted

Output format

00 = offset binary

01 = twos complement

(default)

10 = gray code

11 = reserved

LVDS output drive current adjust

0000 = 3.72 mA output drive current

0001 = 3.5 mA output drive current (default)

0010 = 3.30 mA output drive current

0011 = 2.96 mA output drive current

0100 = 2.82 mA output drive current

0101 = 2.57 mA output drive current

0110 = 2.27 mA output drive current

0111 = 2.0 mA output drive current (reduced range)

1000 to 1111 = reserved

Open

Open

Open

Open

Default

Value

(Hex)

0x01

0x01

Default

Notes/

Comments

Configures

the

outputs

and the

format of

the data.

0x00

DCO clock delay

[delay = (3100 ps × register value/31 +100)]

00000 = 100 ps

00001 = 200 ps

00010 = 300 ps

…

11110 = 3100 ps

11111 = 3200 ps

Full-scale input voltage selection

01111 = 2.087 V p-p

…

00001 = 1.772 V p-p

00000 = 1.75 V p-p (default)

11111 = 1.727 V p-p

…

10000 = 1.383 V p-p

User Test Pattern 1[7:0]

User Test Pattern 1[15:8]

User Test Pattern 2[7:0]

User Test Pattern 2[15:8]

User Test Pattern 3[7:0]

User Test Pattern 3[15:8]

User Test Pattern 4[7:0]

User Test Pattern 4[15:8]

0x00

0x00

Full-scale

input

adjustment

in 0.022 V

steps.

0x00

0x00

0x00

0x00

0x00

0x00

0x00

0x00

Open

Open

NSR mode

000 = 22% bandwidth mode

001 = 33% bandwidth mode

NSR

enable

0 = off

1 = on

NSR tuning word

(see the Noise Shaping Requantizer section;

equations for the tuning word are dependent on the NSR mode)

0x00

0x1C

NSR

controls.

NSR fre-

quency

tuning

word.

Rev. C | Page 27 of 30

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