adc1112d125 NXP Semiconductors, adc1112d125 Datasheet - Page 18

• Manufacturer Part Number: adc1112d125
• Description: Adc1112d125 Dual 11-bit Adc; Cmos Or Lvds Ddr Digital Outputs
• Manufacturer: NXP Semiconductors

NXP Semiconductors
ADC1112D125
Product data sheet
11.2.3 Transformer
The component values are determined by the input frequency and should be selected so
as not to affect the input bandwidth.
Table 11.
The configuration of the transformer circuit is determined by the input frequency. The
configuration shown in
The configuration shown in
both cases, the choice of transformer is a compromise between cost and performance.
Fig 17. Anti-kickback circuit
Fig 18. Single transformer configuration suitable for baseband applications
Input frequency (MHz)
RC coupling versus input frequency, typical values
Analog
170
70
3
input
All information provided in this document is subject to legal disclaimers.
100 nF
Figure 18
Rev. 2 — 3 March 2011
100 nF
ADT1-1WT
Figure 19
Dual 11-bit ADC: CMOS or LVDS DDR digital outputs
would be suitable for a baseband application.
is recommended for high frequency applications. In
R
R
R (Ω)
25
12
12
100 nF
100 nF
100 nF
C
001aan679
INAM/
INAP/
INBM
INBP
25 Ω
25 Ω
25 Ω
25 Ω
ADC1112D125
VCMA/VCMB
12 pF
100 nF
INAM/INBM
INAP/INBP
005aaa094
© NXP B.V. 2011. All rights reserved.
C (pF)
12
8
8
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