AD9239 Analog Devices, AD9239 Datasheet - Page 7

• 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

TIMING DIAGRAM
Table 5. Packet Protocol
Bits[64:57]
Header
(8 bits MSB first)
INPUT SIGNAL
ANALOG
RATE CLOCK
RATE CLOCK
DATA OUT
SAMPLE
SAMPLE
Bits[56:45]
Data 1
(12 bits MSB first)
SERIAL
N – 40
N – 39
N – 38
SERIAL CODED SAMPLES: N – 40, N – 39, N – 38, N – 37 ...
8-BIT HEADER
N – 37
CHANNEL ID
...
Bits[44:33]
Data 2
(12 bits MSB first)
...
Figure 2. Timing Diagram
Rev. B | Page 7 of 40
...
SAMPLE
...
N
DATA PACKET 1
Bits[32:21]
Data 3
(12 bits MSB first)
DATA-WORD
48-BIT ADC
(64 BITS)
N + 1
...
...
...
Bits[20:9]
Data 4
(12 bits MSB first)
CORRECTION
8-BIT ERROR
...
Bits[8:1]
ECC
(8 bits MSB first)
AD9239