997 Hz; Fs = 48 kHz; Measurement Bandwidth is 20 Hz to 20 kHz; Local components as shown in "Recom-

mended Connection Diagram"; SPI mode, Format 0, unless otherwise specified.)

Parameter

Symbol

Min

Typ

Max

Units

Analog Input Characteristics

ADC Resolution

-

-

20

Bits

Total Harmonic Distortion

THD

0.003

-

%

Dynamic Range

(A-weighted):

(unweighted):

TBD

TBD

99

96

-

-

dB

dB

Total Harmonic Distortion + Noise

-1 dB

(Note 1)

THD+N

-

-90

TBD

dB

Interchannel Isolation

(1 kHz)

-

90

-

dB

Interchannel Gain Mismatch

-

0.1

-

dB

Offset Error

(with High Pass Filter)

(HPF defeated with CAL)

-

-

-

TBD

0

-

LSB

LSB

Full Scale Input Voltage (Differential)

1.9

2.0

2.1

Vrms

Gain Drift

-

100

-

ppm/°C

Input Resistance

10

-

-

k

Ω

Input Capacitance

-

-

15

pF

Common Mode Input Voltage

-

2.3

-

V

A/D Decimation Filter Characteristics

Passband

(Note 2)

0

-

21.8

kHz

Passband Ripple

-

-

±0.01

dB

Stopband

(Note 2)

30

-

6114

kHz

Stopband Attenuation

(Note 3)

80

-

-

dB

Group Delay (Fs = Output Sample Rate)

(Note 4)

-15/Fs

-

s

Group Delay Variation vs. Frequency

--

0

µs

High Pass Filter Characteristics

Frequency Response:

-3 dB

(Note 2)

-0.1 dB

-

-

3.7

20

-

-

Hz

Hz

Phase Deviation

@ 20 Hz

(Note 2)

-

10

-

Degree

Passband Ripple

-

-

0

dB

Notes:

1. Referenced to typical full-scale differential input voltage (2 Vrms)

2. Filter characteristics scale with output sample rate. For output sample rates, Fs, other than 48 kHz,

the 0.01 dB passband edge is 0.4535xFs and the stopband edge is 0.625xFs.

3. The analog modulator samples the input at 6.144 MHz for an Fs equal to 48 kHz. There is

no rejection of input signals which are multiples of the sampling frequency ( n x 6.144 MHz

±21.8 kHz

where n = 0,1,2,3...).

µs

* Parameter definitions are given at the end of this data sheet.

Specifications are subject to change without notice.

CS4222

2

DS236PP3