CS5180

4

CHARACTERISTICS/SPECIFICATIONS

DGND = 0 V; MCLK = 25.6 MHz; VREFIN = VREFOUT; MODE = VD+; Analog source impedance = 301 Ohms

with 2200 pF to AGND; Full-Scale input sinewave at 22 kHz; Unless otherwise noted)

Notes: 1. Dynamic range is tested with a 22 kHz input signal 60 dB below full scale.

2. Specification guaranteed by design, characterization, and/or test.

3. Full scale fully-differential input span is nominally 1.6 X the VREFIN voltage. The peak negative

excursion of the signals at AIN+ or AIN- should not go below AGND for proper operation.

4. VREFIN current is less than 1 µA under normal operation, but can be as high as ±200 µA during

calibration.

5. Drift of the on-chip reference alone is typically about ±30 ppm/°C. If using an external reference, total

full scale drift will be that of the external reference ±20 ppm/°C, which is the typical drift of the X1.6 buffer.

6. Applies after self-calibration at final operating ambient temperature.

Parameter

Symbol

Min

Typ

Max

Unit

Dynamic Performance

Dynamic Range

(Note 1)

DR

90

93

-

dB

Total Harmonic Distortion

THD

-90

-95

-

dB

Signal to (Noise + Distortion)

SINAD

87

91

-

dB

Spurious Free Dynamic Range

SFDR

90

96

-

dBc

Static Performance

Linearity Error

(Note 2)

INL

-

±2

-

LSB

Differential Non-Linearity

(Note 2)

DNL

-

-

±0.5

LSB

Full Scale Error

(Note 6)

-

±8

-

LSB

Full Scale Drift with Internal Reference

(Notes 2 and 5)

-

±50

-

ppm/°C

Offset Error

(Note 6)

-

±8

-

LSB

Offset Drift

(Note 2)

-

±6.0

-

µV/°C

Analog Input

Differential Input Voltage Range

(Note 3)

-

1.6 X

VREFIN

Common Mode Range

CMR

1

-

VREFIN

+0.25

V

Input Capacitance

-

4.0

-

pF

Differential Input Impedance

MCLK = 25.6 MHz

-

500

-

k

Ω

Common Mode Rejection Ratio

(Note 2)

CMRR

50

-

-

dB

Common Mode Input Current

MCLK = 25.6 MHz

-

±100

±200

µA

Reference Input

VREFIN

2.25

2.375

2.6

V

VREFIN Current

(Note 4)

-

1

±200

µA

Reference Output

VREFOUT Voltage

2.25

2.375

2.5

V

VREFOUT Output Current

-

-

±500

µA

VREFOUT Impedance

-

0.1

-

Ω