adc1613d NXP Semiconductors, adc1613d Datasheet - Page 17

• 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
13.2.1 Internal/external reference
13.2 System reference and power management
The configuration shown in
both cases, the choice of transformer will be a compromise between cost and
performance.
The ADC1613D has a stable and accurate built-in internal reference voltage to adjust the
ADC full-scale. This reference voltage can be set internally via SPI or with pins VREF an
SENSE (see
and −6 dB, via SPI control bits INTREF[2:0] (when bit INTREF_EN = 1; see
The equivalent reference circuit is shown in
by providing a voltage on pin VREF as described in
Fig 9.
Dual transformer configuration
Analog
Figure
input
All information provided in this document is subject to legal disclaimers.
100 nF
11,
Rev. 02 — 23 April 2010
100 nF
Figure
ADT1-1WT
Figure 9
12,
Figure 13
is recommended for high frequency applications. In
100 nF
50 Ω
50 Ω
ADC1613D series; serial JESD204A interface
ADT1-1WT
Figure
and
Figure
10. External reference is also possible
Figure
ADC1613D series
14), in 1 dB steps between 0 dB
50 Ω
50 Ω
13.
12 Ω
12 Ω
100 nF
8.2 pF
005aaa071
© NXP B.V. 2010. All rights reserved.
INAM
INBM
INAP
INBP
VCM
Table
21).
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