AD9239 Analog Devices, AD9239 Datasheet - Page 34

• 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
Table 15. Memory Map Register
Addr.
(Hex)
Chip Configuration Registers
00
01
02
Device Index and Transfer Registers
05
FF
ADC Functions Registers
08
09
0D
0E
Register
Name
chip_port_
config (local,
master)
chip_id
(global)
chip_grade
(global)
device_
index_A
(global)
device_
update (local,
master)
modes
(local)
Clock
(global)
test_io
(local)
test_bist
(local)
(MSB)
Bit 7
SDO active
(not
required,
ignored if
not used)
Bit 6
LSB
first
Speed grade
010 = 170
100 = 210
101 = 250
Bit 5
Soft
reset
External
PDWN
pin
function
00 = full
PDWN
(default)
01 =
standby
Reset PN
long gen
1 = on
0 = off
(default)
0x0B – AD9239 – 12-bit quad
8-bit Chip ID Bits[2:0]
Rev. B | Page 34 of 40
Bit 4
16 bit
address
(default
mode for
ADCs)
Reset PN
short gen
1 = on
0 = off
(default)
Bit 3
ADC A
Flex output test mode
0000 = off (normal operation)
0001 = midscale short
0010 = +FS short
0011 = −FS short
0100 = checkerboard output
0101 = PN 23 sequence
0110 = PN 9 sequence
0111 = one/zero word toggle
Bit 2
ADC B
BIST init
1 = on
0 = off
(default)
Bit 1
ADC C
00 = chip run
(default)
01 = full power-down
10 = standby
11 = reset
(LSB)
Bit 0
ADC D
SW
transfer
1 = on
0 = off
(default)
Duty
cycle
stabilize
1 = on
(default)
0 = off
BIST
enable
1 = on
0 = off
(default)
Default
Value
(Hex)
0x18
Read
only
Read
only
0x0F
0x00
0x00
0x01
0x00
0x00
Default
Notes/
Comments
Bits are set
to determine
which device
on chip
receives the
next write
command.
The default
is all devices
on chip.
Synchro-
nously
transfers
data from
the master
shift register
to the slave.
Determines
various ge-
neric modes
of chip
operation.
Turns the
internal
duty cycle
stabilizer
on and off.
When set,
the test data
is placed on
the output
pins in place
of normal
data.
When Bit 0
is set, the
built-in self-
test function
is initiated.