參數(shù)資料
型號: ADC1112D125HN
廠商: NXP Semiconductors N.V.
元件分類: 外設及接口
英文描述: Dual 11-bit ADC; CMOS or LVDS DDR digital outputs
封裝: ADC1112D125HN/C1<SOT804-3|<<<1<Always Pb-free,;ADC1112D125HN/C1<SOT804-3|<<<1<Always Pb-free,;
文件頁數(shù): 21/41頁
文件大?。?/td> 565K
代理商: ADC1112D125HN
ADC1112D125
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 2 — 3 March 2011
21 of 41
NXP Semiconductors
ADC1112D125
Dual 11-bit ADC: CMOS or LVDS DDR digital outputs
11.3.2
Programmable full-scale
The full-scale is programmable between 1 V (p-p) to 2 V (p-p) (see
Table 13
).
Table 13.
INTREF
000
001
010
011
100
101
110
111
11.3.3
Common-mode output voltage (V
O(cm)
)
A 0.1
μ
F filter capacitor should be connected between pin VCMA/VCMB and ground to
ensure a low-noise common-mode output voltage. When AC-coupled, pin VCMA/VCMB
can then be used to set the common-mode reference for the analog inputs, for instance
via a transformer middle point.
Fig 21. Internal reference, 2 V (p-p) full-scale
Fig 22. Internal reference, 1 V (p-p) full-scale
Fig 23. External reference, 1 V (p-p) to 2 V (p-p)
full-scale
Fig 24. Internal reference via SPI, 1 V (p-p) to 2 V (p-p)
full-scale
330 pF
VREF
SENSE
005aaa116
REFERENCE
EQUIVALENT
SCHEMATIC
330
pF
005aaa117
VREF
SENSE
REFERENCE
EQUIVALENT
SCHEMATIC
0.1
μ
F
VDDA
V
005aaa119
VREF
SENSE
REFERENCE
EQUIVALENT
SCHEMATIC
REFERENCE
EQUIVALENT
SCHEMATIC
330 pF
005aaa118
VREF
SENSE
Programmable full-scale
Level (dB)
0
1
2
3
4
5
6
reserved
Full-scale (V (p-p))
2
1.78
1.59
1.42
1.26
1.12
1
x
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