AD1870–SPECIFICATIONS

REV. 0

–2–

TEST CONDITIONS UNLESS OTHERWISE NOTED

Supply Voltages

5.0

V

Ambient Temperature

25

°C

12.288

MHz

Input Signal

991.768

Hz

–0.5

dB Full Scale

Measurement Bandwidth

23.2 Hz to 19.998 kHz

Load Capacitance on Digital Outputs

50

pF

2.4

V

0.8

V

Master Mode, Data I

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

Typ

Max

Unit

Resolution

16

Bits

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

Without A-Weight Filter

89

93

dB

With A-Weight Filter

92

96

dB

Signal to (THD + Noise)

86.5

90.5

dB

Signal to THD

94

dB

Analog Inputs

Single-Ended Input Range (

± Full Scale)*

± 1.49

V

Input Impedance at Each Input Pin

32

k

Ω

2.05

2.25

2.55

V

DC Accuracy

Gain Error

±0.5

2.5

%

Interchannel Gain Mismatch

0.05

dB

Gain Drift

115

ppm/

°C

Midscale Offset Error (After Calibration)

±3

20

LSBs

Midscale Drift

–0.2

LSB/

°C

Crosstalk (EIAJ Method)

–110

–100

dB

× 1.326.

Minimum Input

V

V

Maximum Input

V

V

REF

REF

REF

REF

=

×

=+

×

















–

.

.

1 326

2

1 326

2