AD1870–SPECIFICATIONS

REV. A

–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