adc1213s125hn/c1 NXP Semiconductors, adc1213s125hn/c1 Datasheet - Page 17

• Manufacturer Part Number: adc1213s125hn/c1
• Description: Adc1213s Series Single 12-bit Adc; 65 Msps, 80 Msps, 105 Msps Or 125 Msps; Serial Jesd204a Interface
• Manufacturer: NXP Semiconductors

NXP Semiconductors
ADC1213S_SER
Product data sheet
Fig 11. Internal reference, 2 V (p-p) full-scale
Fig 13. Internal reference via SPI, 1 V (p-p) to 2 V (p-p)
full-scale
11.2.2 Programmable full-scale
11.2.3 Common-mode output voltage (V
330 pF
330 pF
SENSE
VREF
SENSE
VREF
The full-scale is programmable between 1 V (p-p) to 2 V (p-p) (see
Table 11.
An 0.1 μF filter capacitor should be connected between pin VCM and ground to ensure a
low-noise common-mode output voltage. When AC-coupled, this pin can be used to set
the common-mode reference for the analog inputs, for instance via a transformer middle
point.
INTREF[2:0]
000
001
010
011
100
101
110
111
EQUIVALENT
REFERENCE
SCHEMATIC
REFERENCE
EQUIVALENT
SCHEMATIC
Reference SPI gain control
005aaa116
005aaa118
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 14 March 2011
Fig 12. Internal reference, 1 V (p-p) full-scale
Fig 14. External reference, 1 V (p-p) to 2 V (p-p)
Level (dB)
0
−1
−2
−3
−4
−5
−6
not used
O(cm)
Single 12-bit ADC; serial JESD204A interface
full-scale
)
V
330
pF
ADC1213S series
VDDA
SENSE
VREF
0.1 μF
SENSE
VREF
REFERENCE
EQUIVALENT
Full-scale (V (p-p))
2
1.78
1.59
1.42
1.26
1.12
1
x
SCHEMATIC
REFERENCE
EQUIVALENT
SCHEMATIC
Table
005aaa117
005aaa119
© NXP B.V. 2011. All rights reserved.
11).
17 of 39