ADC1115S125 3

© IDT 2012. All rights reserved.

Product data sheet

Rev. 03 — 2 July 2012

8 of 36

Integrated Device Technology

ADC1115S125

11-bit, 125 Msps ADC; input buffer; CMOS or LVDS DDR digital outputs

10. Dynamic characteristics

10.1 Dynamic characteristics

[1]

Typical values measured at VDDA(3V) =3 V, VDDO = 1.8 V, VDDA(5V) =5V; Tamb =25 C and CL = 5 pF; minimum and maximum values

are across the full temperature range Tamb = 40 C to +85 C at VDDA(3V) =3 V, VDDO = 1.8 V, VDDA(5V) =5V, VINP  VINM = 1 dBFS;

internal reference mode; applied to CMOS and LVDS interface; unless otherwise specified.

Table 7.

Dynamic characteristics[1]

Symbol

Parameter

Conditions

ADC1115S125

Unit

Min

Typ

Max

Analog signal processing

2H

second harmonic level

fi =3MHz

-

88

-

dBc

fi =30MHz

-

87

-

dBc

fi =70MHz

-

85

-

dBc

fi =170 MHz

-

83

-

dBc

3H

third harmonic level

fi =3MHz

-

87

-

dBc

fi =30MHz

-

86

-

dBc

fi =70MHz

-

84

-

dBc

fi =170 MHz

-

82

-

dBc

THD

total harmonic distortion

fi =3MHz

-

84

-

dBc

fi =30MHz

-

83

-

dBc

fi =70MHz

-

81

-

dBc

fi =170 MHz

-

79

-

dBc

ENOB

effective number of bits

fi =3MHz

-

10.7

-

bits

fi = 30 MHz

-

10.7

-

bits

fi = 70 MHz

-

10.7

-

bits

fi =170 MHz

-

10.6

-

bits

SNR

signal-to-noise ratio

fi =3MHz

-

66.2

-

dBFS

fi = 30 MHz

-

66.2

-

dBFS

fi = 70 MHz

-

66.0

-

dBFS

fi =170 MHz

-

65.8

-

dBFS

SFDR

spurious-free dynamic

range

fi =3MHz

-

87

-

dBc

fi =30MHz

-

86

-

dBc

fi =70MHz

-

84

-

dBc

fi =170 MHz

-

82

-

dBc

IMD

Intermodulation distortion

fi =3MHz

-

89

-

dBc

fi =30MHz

-

88

-

dBc

fi =70MHz

-

86

-

dBc

fi =170 MHz

-

84

-

dBc