ADC1412D Datasheet, PDF (20/41 Pages) NXP Semiconductors – Dual 14-bit ADC; 65 Msps, 80 Msps, 105 Msps or 125 Msps; CMOS or LVDS DDR digital outputs

Integrated Device Technology
ADC1412D series
Dual 14-bit ADC: CMOS or LVDS DDR digital outputs
ADT1-1WT
Analog ^{100 nF}
input
100 nF
ADT1-1WT
50 Ω
50 Ω
12 Ω
50 Ω
50 Ω
12 Ω
100 nF
INAP/INBP
8.2 pF
INAM/INBM
VCMA/VCMB
100 nF
005aaa095
Fig 19. Dual transformer configuration suitable for high intermediate frequency
application
11.3 System reference and power management
11.3.1 Internal/external references
The ADC1412D 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 and
SENSE (programmable in 1 dB steps between 0 dB and 6 dB via control bits
INTREF[2:0] when bit INTREF_EN = logic 1; see Table 23). See Figure 21 to Figure 24.
The equivalent reference circuit is shown in Figure 20. External reference is also possible
by providing a voltage on pin VREF as described in Figure 23.
ADC1412D_SER 5
Product data sheet
Rev. 05 — 2 July 2012
© IDT 2012. All rights reserved.
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