Datasheet

ADC1113D125 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
Product data sheet Rev. 3 — 10 February 2011 13 of 41
NXP Semiconductors
ADC1113D125
Dual 11-bit ADC; serial JESD204A interface
The component values are determined by the input frequency and should be selected so
as not to affect the input bandwidth.
11.1.3 Transformer
The configuration of the transformer circuit is determined by the input frequency. The
configuration shown in Figure 8
would be suitable for a baseband application.
Fig 7. Anti-kickback circuit
Table 9. RC coupling versus input frequency - typical values
Input frequency (MHz) Resistance (Ω) Capacitance (pF)
32512
70 12 8
170 12 8
001aan679
R
R
C
INPA/
INBP
INAM/
INBM
Fig 8. Single transformer configuration
005aaa07
0
100 nF100 nF
100 nF
100 nF
100 nF
25 Ω
25 Ω
25 Ω
25 Ω
12 pF
ADT1-1WT
100 nF
Analog
input
INAP
INBP
INAM
INBM
VCM