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CS5181-BL

∆Σ Modulator & 400 kHz to 625 kHz 16-Bit ADC

Cirrus Logic 

CS5181

CHARACTERISTICS/SPECIFICATIONS

ANALOG CHARACTERISTICS (TA = -40 to 85 °C; VA+ = 5 V ±5%, VD+ = 3.3 V ±0.3V; AGND =

DGND = 0 V; MCLK = 40.0 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.)

Parameter

Dynamic Performance

Dynamic Range

Total Harmonic Distortion @ 22 kHz

Signal to (Noise + Distortion)

Spurious Free Dynamic Range

Static Performance

Integral Nonlinearity

Differential Non-Linearity

Full Scale Error

Full Scale Drift with Internal Reference

Offset Error

Offset Drift

Analog Input

Differential Input Voltage Range

Symbol

(Note 1)

(Note 1)

DR

THD

SINAD

SFDR

(Note 2)

(Note 2)

(Note 6)

(Notes 2 and 5)

(Note 6)

(Note 2)

INL

DNL

(Note 3)

Common Mode Range

CMR

Input Capacitance

Differential Input Impedance (capacitive)

Common Mode Rejection Ratio

Common Mode Input Current

Reference Input

VREFIN

VREFIN Current

Reference Output

VREFOUT Voltage

VREFOUT Output Current

VREFOUT Impedance

(Note 2) CMRR

(Note 4)

Min

Typ

Max Unit

89

93

84

89

82

87

84

90

-

dB

-

dB

-

dB

-

dBc

-

±2

-

LSB

-

-

±0.5 LSB

-

±8

-

LSB

-

±50

- ppm/°C

-

±8

-

LSB

-

±6.0

-

µV/°C

-

1.6 X

-

Vpp

VREFIN

1

-

VREFIN V

+ 0.25

-

4.0

-

pF

-

300

-

kΩ

50

-

-

dB

-

±160 ±320 µA

2.25 2.375

2.6

V

-

1

±320 µA

2.25 2.375

2.5

V

-

-

±500 µA

-

0.1

-

Ω

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 ±320 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 plus an additional ±20 ppm/°C, which is the typical

drift of the X1.6 buffer.

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

4

DS250PP1

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