ADAU1961WBCPZ-R7 datasheet(4/77 Pages) AD

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Data Sheet

ADAU1961

Rev. A | Page 3 of 76

SPECIFICATIONS

Supply voltage (AVDD) = 3.3 V, TA = 25°C, master clock = 12.288 MHz (48 kHz fS, 256 × fS mode), input sample rate = 48 kHz, measurement

bandwidth = 20 Hz to 20 kHz, word width = 24 bits, CLOAD (digital output) = 20 pF, ILOAD (digital output) = 2 mA, VIH = 2 V, VIL = 0.8 V,

unless otherwise noted. Performance of all channels is identical, exclusive of the interchannel gain mismatch and interchannel phase

deviation specifications.

ANALOG PERFORMANCE SPECIFICATIONS, TA = 25°C

IOVDD = 3.3 V ± 10%.

Table 1.

Parameter

Test Conditions/Comments

Min

Typ

Max

Unit

ANALOG-TO-DIGITAL CONVERTERS

ADC performance excludes mixers

and PGA

ADC Resolution

All ADCs

Bits

Digital Attenuation Step

0.375

Digital Attenuation Range

INPUT RESISTANCE

Single-Ended Line Input

−12 dB gain

80.4

kΩ

0 dB gain

kΩ

6 dB gain

10.5

kΩ

PGA Inverting Inputs

−12 dB gain

84.5

kΩ

0 dB gain

kΩ

35.25 dB gain

1.7

kΩ

PGA Noninverting Inputs

All gains

105

kΩ

SINGLE-ENDED LINE INPUT

Full-Scale Input Voltage (0 dB)

1.0 (2.83)

V rms (V p-p)

Dynamic Range

20 Hz to 20 kHz, −60 dB input

With A-Weighted Filter (RMS)

83.5

No Filter (RMS)

Total Harmonic Distortion + Noise

−1 dBFS

−90

−71

Signal-to-Noise Ratio

With A-Weighted Filter (RMS)

No Filter (RMS)

Input Mixer Gain per Step

−12 dB to +6 dB range

2.89

3.07

Mute Attenuation

LINPG[2:0], LINNG[2:0] = 000,

RINPG[2:0], RINNG[2:0] = 000,

MX1AUXG[2:0], MX2AUXG[2:0] = 000

−85.5

−77

Interchannel Gain Mismatch

−0.3

+0.032

+0.3

Offset Error

−5

Gain Error

−17

−12

−8

Interchannel Isolation

Power Supply Rejection Ratio

CM capacitor = 20 μF, 100 mV p-p @ 1 kHz

PSEUDO-DIFFERENTIAL PGA INPUT

Full-Scale Input Voltage (0 dB)

1.0 (2.83)

V rms (V p-p)

Dynamic Range

20 Hz to 20 kHz, −60 dB input

With A-Weighted Filter (RMS)

No Filter (RMS)

Total Harmonic Distortion + Noise

−1 dBFS

−89

−83

Signal-to-Noise Ratio

With A-Weighted Filter (RMS)

No Filter (RMS)

PGA Boost Gain Error

20 dB gain setting (RDBOOST[1:0],

LDBOOST[1:0] = 10)

−8

+0.4

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