4-Channel, 16-Bit, Simultaneous-Sampling ADCs

with PGA, Filter, and 8-/12-Bit Dual-Stage DAC

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3

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

DYNAMIC PERFORMANCE (PGA Enabled, PGA Gain = 8 x (25kHz -1dB Full-Scale Signal))

Maximum Full-Scale Input

ADC modulator gain = 1

150

Input-Referred Noise Spectral

Density

100kHz

20

nV/√Hz

Second Harmonic to

Fundamental

-92

dB

Third Harmonic to Fundamental

-94

dB

Spurious-Free Dynamic Range

SFDR

92

dB

Channel-to-Channel Isolation

Unused channels are shorted and

unconnected

110

dB

Channel Phase Matching

Between all channels, including complete

analog signal path

-0.05

+0.05

Degrees

DYNAMIC PERFORMANCE (PGA Enabled, PGA Gain = 16 x (25kHz -1dB Full-Scale Signal))

Maximum Full-Scale Input

ADC modulator gain = 1

75

Input-Referred Noise Spectral

Density

100kHz

15

nV/√Hz

Second Harmonic to

Fundamental

-99

dB

Third Harmonic to Fundamental

-93

dB

Spurious-Free Dynamic Range

SFDR

93

dB

Channel-to-Channel Isolation

Unused channels are shorted and

unconnected

106

dB

Channel Phase Matching

Between all channels, including complete

analog signal path

-0.075

+0.075

Degrees

DYNAMIC PERFORMANCE (EQ Mode (5kHz -1dB Full-Scale Signal, CONFIG_ Register Bit 3 = 1))

Maximum Full-Scale Input

ADC modulator gain = 1 (Note 2)

800

Input-Referred Noise Spectral

Density

100kHz

6

nV/√Hz

Second Harmonic to

Fundamental

-80

-90

dB

Third Harmonic to Fundamental

-77

-98

dB

Spurious-Free Dynamic Range

SFDR

Input referred (Note 3)

77

89

dB

ELECTRICAL CHARACTERISTICS (continued)

OSCIN), clock divider set to 4, SHDN = DACSTEP = UP/DWN = DGND, CONVRUN = DVDD, all analog inputs driven directly through

a series 150