adc1613d NXP Semiconductors, adc1613d Datasheet - Page 19

• Manufacturer Part Number: adc1613d
• Description: Dual 16-bit Adc; 65 Msps, 80 Msps, 105 Msps Or 125 Msps; Serial Jesd204a Interface
• Manufacturer: NXP Semiconductors

NXP Semiconductors
ADC1613D_SER_2
Preliminary data sheet
Fig 11. Internal reference, 2 V (p-p) full scale
Fig 13. External reference, 1 V (p-p) to 2 V (p-p)
full-scale
13.2.2 Reference gain control
V
330 pF
SENSE
VREF
VDDA
0.1 μF
SENSE
Figure 11
The reference gain is programmable between 0 dB to −6 dB in steps of 1 dB via the SPI
(see
and 1 V (p-p), as shown in
Table 11.
VREF
INTREF[2:0]
000
001
010
011
100
101
110
111
EQUIVALENT
REFERENCE
Table
SCHEMATIC
REFERENCE
EQUIVALENT
SCHEMATIC
to
Reference SPI gain control
21). The corresponding full scale input voltage range varies between 2 V (p-p)
005aaa116
Figure 14
005aaa119
All information provided in this document is subject to legal disclaimers.
indicate how to connect the SENSE and VREF pins.
Rev. 02 — 23 April 2010
Table
11:
Fig 12. Internal reference, 1 V (p-p) full scale
Fig 14. Internal reference via SPI, 1 V (p-p) to 2 V (p-p)
Level
0 dB
−1 dB
−2 dB
−3 dB
−4 dB
−5 dB
−6 dB
not used
ADC1613D series; serial JESD204A interface
full-scale
330 pF
330
pF
ADC1613D series
SENSE
SENSE
VREF
VREF
REFERENCE
EQUIVALENT
Full Scale, V (p-p)
2
1.78
1.59
1.42
1.26
1.12
1
x
SCHEMATIC
EQUIVALENT
REFERENCE
SCHEMATIC
005aaa117
005aaa118
© NXP B.V. 2010. All rights reserved.
19 of 43