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AD1974
(Rev.:Rev0)

4 ADC with PLL, 192 kHz, 24-Bit Codec

Analog Devices 

AD1974

SPECIFICATIONS

TEST CONDITIONS

Performance of all channels is identical, exclusive of the interchannel gain mismatch and interchannel phase deviation specifications.

Supply Voltages (AVDD, DVDD) 3.3 V

Temperature Range1

As specified in Table 1 and Table 2

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

Load Capacitance (Digital Output) 20 pF

Load Current (Digital Output)

±1 mA or 1.5 kΩ to ½ DVDD supply

Input Voltage High

2.0 V

Input Voltage Low

0.8 V

1 Functionally guaranteed at −40°C to +125°C case temperature.

ANALOG PERFORMANCE SPECIFICATIONS

Specifications guaranteed at 25°C (ambient).

Table 1.

Parameter

ANALOG-TO-DIGITAL CONVERTERS

ADC Resolution

Full-Scale Input Voltage (Differential)

Dynamic Range

No Filter (RMS)

With A-Weighted Filter (RMS)

Total Harmonic Distortion + Noise (THD + N)

Gain Error

Interchannel Gain Mismatch

Offset Error

Gain Drift

Interchannel Isolation

CMRR

Input Resistance

Input Capacitance

Input Common-Mode Bias Voltage

REFERENCE

Internal Reference Voltage

External Reference Voltage

Common-Mode Reference Output

Conditions

All ADCs

20 Hz to 20 kHz, −60 dB input

−1 dBFS

100 mV rms, 1 kHz

100 mV rms, 20 kHz

FILTR pin

FILTR pin

CM pin

Min Typ

24

1.9

98

100

−10

−0.25

−10

102

105

−96

0

100

−110

55

55

14

10

1.5

1.50

1.32 1.50

1.50

Max Unit

Bits

V rms

−87

+10

+0.25

+10

dB

dB

dB

%

dB

mV

ppm/°C

dB

dB

dB

kΩ

pF

V

V

1.68 V

V

Rev. 0 | Page 3 of 24

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