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AD1870

Single-Supply 16-Bit ∑-∆ Stereo ADC

Analog Devices 

AD1870–SPECIFICATIONS

TEST CONDITIONS UNLESS OTHERWISE NOTED

Supply Voltages

5.0

V

Ambient Temperature

25

°C

Input Clock (fCLKIN) [256 × fS]

Input Signal

12.288

991.768

MHz

Hz

–0.5

dB Full Scale

Measurement Bandwidth

23.2 Hz to 19.998 kHz

Load Capacitance on Digital Outputs 50

pF

Input Voltage HI (VIH)

2.4

V

Input Voltage LO (VIL)

0.8

V

Master Mode, Data I2S-Justified (Refer to Figure 14).

Device Under Test (DUT) bypassed and decoupled as shown in Figure 3.

DUT is antialiased and ac-coupled as shown in Figure 2. DUT is calibrated.

Values in bold typeface are tested; all others are guaranteed but not tested.

ANALOG PERFORMANCE

Min

Resolution

Dynamic Range (20 Hz to 20 kHz, –60 dB Input)

Without A-Weight Filter

89

With A-Weight Filter

92

Signal to (THD + Noise)

86.5

Signal to THD

Analog Inputs

Single-Ended Input Range (± Full Scale)*

Input Impedance at Each Input Pin

VREF

2.05

DC Accuracy

Gain Error

Interchannel Gain Mismatch

Gain Drift

Midscale Offset Error (After Calibration)

Midscale Drift

Crosstalk (EIAJ Method)

*VIN p-p = VREF × 1.326.

Minimum Input = VREF –

 VREF × 1.326 

 2 

Maximum Input = VREF +





VREF

× 1.326 

2 

Typ

16

93

96

90.5

94

VREF ± 1.49

32

2.25

± 0.5

0.05

115

±3

–0.2

–110

Max

2.55

؎2.5

؎20

–100

Unit

Bits

dB

dB

dB

dB

V

kΩ

V

%

dB

ppm/°C

LSBs

LSB/°C

dB

–2–

REV. A

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