Datasheet

ADC1010S_SER All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved.
Product data sheet Rev. 2 — 28 December 2010 17 of 39
NXP Semiconductors
ADC1010S series
Single 10-bit ADC; CMOS or LVDS DDR digital outputs
The component values are determined by the input frequency and should be selected so
as not to affect the input bandwidth.
11.2.3 Transformer
The configuration of the transformer circuit is determined by the input frequency. The
configuration shown in Figure 18
would be suitable for a baseband application.
The configuration shown in Figure 19 is recommended for high frequency applications. In
both cases, the choice of transformer is a compromise between cost and performance.
Fig 17. Anti-kickback circuit
Table 11. RC coupling versus input frequency - typical values
Input frequency R C
3 MHz 25 Ω 12 pF
70 MHz 12 Ω 8 pF
170 MHz 12 Ω 8 pF
005aaa07
3
R
R
C
INP
INM
Fig 18. Single transformer configuration suitable for baseband applications
005aaa04
4
100 nF100 nF
100 nF
100 nF
25 Ω
25 Ω
25 Ω
25 Ω
12 pF
INP
INM
VCM
100 nF
analog
input
ADT1-1WT
100 nF