12ビット、RF サンプリング A/D コンバータ (ADC)" />
JAJSGI4B November 2018 – March 2021 ADC12DJ3200QML-SP
PRODUCTION DATA
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The DDC output data varies depending on the selected JMODE. Real decimate-by-2 mode (JMODE 9) consists of 15-bit real output data. Complex decimation modes (JMODE 10 to 16), except for JMODE 12, consist of 15-bit complex data plus the two overrange threshold-detection control bits. JMODE 12 output data consists of 12-bit complex data, but does not include the two overrange threshold-detection control bits that must instead be monitored using the ORA0, ORA1 and ORB0, ORB1 output pins. Table 7-13 lists the data format for JMODE 9 and Table 7-14 lists the data format for all JMODEs except JMODE 12.
DDC CHANNEL | ODD, EVEN SAMPLE | 16-BIT OUTPUT WORD | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | ||
A | Even | DDC A even-numbered sample, 15-bit output data | OVR_T0 | ||||||||||||||
A | Odd | DDC A odd-numbered sample, 15-bit output data | OVR_T1 | ||||||||||||||
B | Even | DDC B even-numbered sample, 15-bit output data | OVR_T0 | ||||||||||||||
B | Odd | DDC B odd-numbered sample, 15-bit output data | OVR_T1 |
I/Q SAMPLE | 16-BIT OUTPUT WORD | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
I | DDC in-phase (I) 15-bit output data | OVR_T0 | ||||||||||||||
Q | DDC quadrature (Q) 15-bit output data | OVR_T1 |