AD9239 Analog Devices, AD9239 Datasheet - Page 35

• 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

Addr.
(Hex)
0F
10
14
15
18
19
1A
1B
1C
1D
1E
Register
Name
adc_input
(local)
offset
(local)
output_mode
(local/global)
output_adjust
(global)
vref
(global)
user_
patt1_lsb
(local)
user_
patt1_msb
(local)
user_
patt2_lsb
(local)
user_
patt2_msb
(local)
user_
patt3_lsb
(local)
user_
patt3_msb
(local)
(MSB)
Bit 7
B7
B15
B7
B15
B7
B15
Bit 6
B6
B14
B6
B14
B6
B14
Bit 5
B5
B13
B5
B13
B5
B13
Bit 4
Output
enable bar
(local)
1 = off
0 = on
(default)
B4
B12
B4
B12
B4
B12
Rev. B | Page 35 of 40
6-bit Device Offset Adjustment[5:0]
011111 = +31 LSB
011110 = +30 LSB
011101 = +29 LSB
…
000010 = +2 LSB
000001 = +1 LSB
000000 = 0 LSB
111111 = −1 LSB
111110 = −2 LSB
111101 = −3 LSB
…
100001 = −31 LSB
100000 = −32 LSB
Bit 3
B3
B11
B3
B11
B3
B11
Ref_Vfs[4:0]
Reference full-scale adjust
10000 = 0.98 V p-p
10001 = 1.00 V p-p
10010 = 1.02 V p-p
10011 = 1.04 V p-p
…
11111 = 1.23 V p-p
00000 = 1.25 V p-p (default)
00001 = 1.27 V p-p
…
01110 = 1.48 V p-p
01111 = 1.5 V p-p
Bit 2
Analog
disconnect
enable
1 = on
0 = off
(default)
Output
invert
(global)
enable
1 = on
0 = off
(default)
B2
B10
B2
B10
B2
B10
Bit 1
VCM
enable
1 = on
0 = off
(default)
Data format select
(global)
00 = offset binary
(default)
01 = twos
complement
10 = gray code
Output Drive
Current[1:0]
00 = 400 mV
(default)
01 = 500 mV
10 = 440 mV
11 = 320 mV
B1
B9
B1
B9
B1
B9
(LSB)
Bit 0
B0
B8
B0
B8
B0
B8
0x00
0xDD
Default
Value
(Hex)
0x00
0x00
0x00
0x00
0xA5
0x66
0x53
0x35
0xBB
AD9239
Default
Notes/
Comments
Device
offset
trim.
Configures
the outputs
and the
format of
the data.
VCM output
adjustments.
Select
adjustments
for V
User-defined
pattern,
1 LSB.
User-defined
pattern,
1 MSB
User-defined
pattern,
2 LSB
User-defined
pattern,
2 MSB
User-defined
pattern,
3 LSB
User-defined
pattern,
3 MSB
REF
.