CS4227

4

DS281PP2

1.

CHARACTERISTICS AND SPECIFICATIONS

Fs = 44.1 kHz; Measurement Bandwidth is 20 Hz to 20 kHz; Local components as shown in Figure 5; SPI mode,

Format 3, unless otherwise specified.)

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

2. Input resistance is for the input selected. Non-selected inputs have a very high (>1M

Ω) input resistance.

The input resistance will vary with gain value selected, but will always be greater than the min. value

specified.

3. Filter characteristics scale with output sample rate.

4. The analog modulator samples the input at 5.6448 MHz for an output sample rate of 44.1 kHz. There is

no rejection of input signals which are multiples of the sampling frequency (n x 5.6448 MHz ±20.0 kHz

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

Parameter

Symbol

CS4227-KQ

CS4227-BQ

Units

Min

Typ

Max

Min

Typ

Max

ADC Resolution

Stereo Audio channels

Mono channel

16

16

-

-

20

20

16

16

-

-

20

20

Bits

Bits

Total Harmonic Distortion

THD

0.003

-

0.003

-

%

Dynamic Range

(A weighted, Stereo)

(unweighted, Stereo)

(A weighted, Mono)

92

-

89

95

92

-

-

-

-

90

-

87

93

90

-

-

-

-

dB

dB

dB

Total Harmonic

-1 dB, Stereo

(Note 1)

Distortion + Noise -1 dB, Mono

(Note 1)

THD+N

-

-

-88

-

-82

-72

-

-

-86

-

-80

-70

dB

dB

Interchannel Isolation

-

90

-

-

90

-

dB

Interchannel Gain Mismatch

-

0.1

-

-

0.1

-

dB

Programmable Input Gain Span

8

9

10

8

9

10

dB

Gain Step Size

2.7

3

3.3

2.7

3

3.3

dB

Offset Error (with high pass filter)

-

-

0

-

-

0

LSB

Full Scale Input Voltage (Single Ended):

0.90

1.0

1.10

0.90

1.0

1.10

Vrms

Gain Drift

-

100

-

-

100

-

ppm/°C

Input Resistance

(Note 2)

10

-

-

10

-

-

k

Ω

Input Capacitance

-

-

15

-

-

15

pF

CMOUT Output Voltage

-

2.3

-

-

2.3

-

V

A/D Decimation Filter Characteristics

Passband

(Note 3)

0.02

-

20.0

0.02

-

20.0

kHz

Passband Ripple

-

-

0.01

-

-

0.01

dB

Stopband

(Note 3)

27.56

-

5617.2 27.56

-

5617.2

kHz

Stopband Attenuation

(Note 4)

80

-

-

80

-

-

dB

Group Delay (Fs = Output Sample Rate) (Note 5)

-

15/Fs

-

-

15/Fs

-

s

Group Delay Variation vs. Frequency

∆ t

gd

--

0

-

-

0

µs