ADC1610S Datasheet, PDF(18/38 Page) NXP Semiconductors – Single 16-bit ADC; 65 Msps, 80 Msps, 105 Msps or 125 Msps; CMOS or LVDS DDR digital outputs

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ADC1610S Datasheet, PDF (18/38 Pages) NXP Semiconductors – Single 16-bit ADC; 65 Msps, 80 Msps, 105 Msps or 125 Msps; CMOS or LVDS DDR digital outputs

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NXP Semiconductors

ADC1610S series

ADC1610S series; CMOS or LVDS DDR digital output

VREF

REFERENCE

AMP

BUFFER

EXT_ref

BANDGAP

REFERENCE

REFT

REFB

SENSE

SELECTION

LOGIC

ADC CORE

Fig 12. Reference equivalent schematic

005aaa164

If bit INTREF_EN is set to 0, the reference voltage will be determined either internally or

externally as detailed in Table 12.

Table 12. Reference selection

Selection

SPI bit

INTREF_EN

SENSE pin VREF pin

full-scale (p-p)

internal

(Figure 13)

AGND

330 pF capacitor to AGND 2 V

internal

(Figure 14)

pin VREF connected to pin SENSE and via 1 V

a 330 pF capacitor to AGND

external

(Figure 15)

VDDA

external voltage between 1 V to 2 V

0.5 V and 1 V[1]

internal via SPI 1

(Figure 16)

pin VREF connected to pin SENSE and via 1 V to 2 V

330 pF capacitor to AGND

[1] The voltage on pin VREF is doubled internally to generate the internal reference voltage.

ADC1610S_SER_2

Objective data sheet

All information provided in this document is subject to legal disclaimers.

Rev. 02 â 12 April 2010

18 of 38

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