AD1847 datasheet(2/28 Pages) AD

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STANDARD TEST CONDITIONS UNLESS OTHERWISE NOTED

Temperature

°C

DAC Output Conditions

Digital Supply (VDD)

5.0

0 dB Attenuation

Analog Supply (VCC)

5.0

Full-Scale Digital Inputs

Word Rate (FS )

kHz

16-Bit Linear Mode

Input Signal

1007

No Output Load

Analog Output Passband

Hz to 20 kHz

Mute Off

FFT Size

4096

ADC Input Conditions

VIH

2.4

0 dB Gain

VIL

0.8

–3.0 dB Relative to Full Scale

VOH

2.4

Line Input

VOL

0.4

16-Bit Linear Mode

ANALOG INPUT

Min

Typ

Max

Units

Full-Scale Input Voltage (RMS Values Assume Sine Wave Input)

Line1, Line2, AUX1, AUX2

V rms

2.54

2.8

3.10

V p-p

Input Impedance

Line1, Line2, AUX1, AUX2†

Ω

Input Capacitance†

PROGRAMMABLE GAIN AMPLIFIER—ADC

Min

Typ

Max

Units

Step Size (All Steps Tested, –30 dB Input)

1.10

1.5

1.90

PGA Gain Range Span†

21.0

24.0

AUXILIARY INPUT ANALOG AMPLIFIERS/ATTENUATORS

Min

Typ

Max

Units

Step Size (+12 dB to –28.5 dB, Referenced to DAC Full Scale)

1.3

1.5

1.7

(–30 dB to –34.5 dB, Referenced to DAC Full Scale)

1.1

1.5

1.9

Input Gain/Attenuation Range Span†

45.5

47.5

AUX Input Impedance†

Ω

DIGITAL DECIMATION AND INTERPOLATION FILTERS†

Min

Max

Units

Passband

0.4

Passband Ripple

–0.1

+0.1

Transition Band

0.4

0.6

Stopband

0.6

∞

Stopband Rejection

Group Delay

30/FS

Group Delay Variation Over Passband

µs

REV. B

AD1847–SPECIFICATIONS

–2–

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