AD9239 Analog Devices, AD9239 Datasheet - Page 36

• Manufacturer Part Number: AD9239
• Description: Quad, 12-Bit, 170 MSPS/210 MSPS/250 MSPS Serial Output 1.8 V ADC
• Manufacturer: Analog Devices

Specifications of AD9239

• Resolution (bits): 12bit
• # Chan: 4
• Sample Rate: 250MSPS
• Interface: Ser
• Analog Input Type: Diff-Uni,SE-Uni
• Ain Range: 1.25 V p-p
• Adc Architecture: Pipelined
• Pkg Type: CSP

AD9239
Addr.
(Hex)
1F
20
21
24
25
32
34
50
51
52
53
Register
Name
user_
patt4_lsb
(local)
user_
patt4_msb
(local)
serial_control
(global)
misr_lsb
(local)
misr_msb
(local)
adi_link_
options
(global)
Channel ID
(local)
coarse_
gain_adj
(local)
fine_
gain_adj
(local)
gain_cal_ctl
Dynamic
pgm pins
(global)
(MSB)
Bit 7
B7
B15
B7
B15
Gain adjust
enable
1 = on
0 = off
(default)
Temp. sensor
enable
1 = on
0 = off
(default)
pgm_3
00 = sync
01 = standby A
10 = standby A and D
11 = standby A and B
Bit 6
B6
B14
B6
B14
Hamming
enable
1 = on
(default)
0 = off
(Only Bits[3:0] used if overrange is included in header)
Bit 5
B5
B13
B5
B13
Scramble
data only
0 =
scramble
header
and data
(default)
1 =
scramble
data only
pgm_2
00 = sync
01 = standby B
10 = standby B and C
11 = standby B and A
Rev. B | Page 36 of 40
Bit 4
B4
B12
B4
B12
Data flow
order
0 =
ECC last
(default)
1 =
Scrambler
last
(Override
0x032[5])
Channel ID
Coarse Gain Adjust[5:0] = Output[63:0]
000000 = 0000…0001
000001 = 0000…0011
000010 = 0000…0111
…
111101 = 0011…1111
111110 = 0111…1111
111111 = 1111…1111
Bit 3
B3
B11
PLL
high
encode
rate
mode
(global)
0 = low
rate
1 = high
rate
(default)
B3
B11
Over-
range in
header
1 = on
(default)
0 = off
pgm_1
00 = sync
01 = standby C
10 = standby C and B
11 = standby C and D
Fine Gain Adjust[3:0] = Output[15:0]
0000 = 0000000000000001
0001 = 0000000000000010
0010 = 0000000000000100
…
1101 = 0010000000000000
1110 = 0100000000000000
1111 = 1000000000000000
Bit 2
B2
B10
B2
B10
Scramble options
00 = inverted
01 = SONET (default)
10 = Ethernet
Gain quar-
ter LSB
1 = on
0 = off
(default)
Bit 1
B1
B9
B1
B9
Gain cal
resetb
1 = on
(default)
0 = off
pgm_0
00 = sync
01 = standby D
10 = standby D and A
11 = standby D and C
(LSB)
Bit 0
B0
B0
B8
Scramble
enable
1 = on
(default)
0 = off
Gain cal
enable
1 = on
0 = off
(default)
B8
Default
Value
(Hex)
0xAA
0xCC
0x08
0x00
0x00
0x4B
0x00
0x00
0x00
0x02
0x00
Default
Notes/
Comments
User-defined
pattern,
4 LSB.
User defined
pattern
4 MSB.
Serial stream
control.
Least
significant
byte of
MISR.
Read only.
Most
significant
byte of
MISR.
Read only.
Default is
56-bit
SONET
scrambler
with over
range in the
header bits.
Standby =
ADC core
off, PN23
enabled,
serial channel
enabled.