AD9789BBCZ datasheet(22/76 Pages) AD

22 / 76 page

AD9789

Rev. A | Page 22 of 76

TERMINOLOGY

Monotonicity

A DAC is monotonic if the output either increases or remains

constant as the digital input increases.

Offset Error

Offset error is the deviation of the output current from the ideal

of 0. For IOUTP, 0 mA output is expected when all inputs are

set to 0. For IOUTN, 0 mA output is expected when all inputs

are set to 1.

Gain Error

Gain error is the difference between the actual and ideal output

span. The actual span is determined by the output when all inputs

are set to 1s minus the output when all inputs are set to 0s.

Temperature Drift

Temperature drift is specified as the maximum change from the

ambient (25°C) value to the value at either TMIN or TMAX. For offset,

gain, and reference drift, the drift is reported in ppm per °C.

Power Supply Rejection (PSR)

PSR is the maximum change in the full-scale output as the

supplies are varied from nominal to minimum and maximum

specified voltages.

Output Compliance Range

The output compliance range is the range of allowable voltage

at the output of a current output DAC. Operation beyond the

maximum compliance limits may cause either output stage

saturation or breakdown, resulting in nonlinear performance.

Spurious-Free Dynamic Range (SFDR)

SFDR is the difference, in dB, between the peak amplitude of

the output signal and the peak spurious signal over the specified

bandwidth.

Noise Spectral Density (NSD)

NSD is the converter noise power per unit of bandwidth. NSD

is usually specified in dBm/Hz in the presence of a 0 dBm full-

scale signal.

Adjacent Channel Leakage Ratio (ACLR)

The adjacent channel leakage (power) ratio is the ratio, in dBc,

between the measured power within a channel relative to its

adjacent channels.

Modulation Error Ratio (MER)

Modulated signals create a discrete set of output values referred

to as a constellation. Each symbol creates an output signal corre-

sponding to one point on the constellation. MER is a measure

of the discrepancy between the average output symbol magnitude

and the rms error magnitude of the individual symbol.

Intermodulation Distortion (IMD)

IMD is the result of two or more signals at different frequencies

mixing together. Many products are created according to the

formula af1 ± bf2, where a and b are integer values.

AD9789BBCZ датащи(PDF) 22 Page - Analog Devices

AD9789BBCZ датащи(HTML) 22 Page - Analog Devices

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76

датащи скачать

ссылки URL