1996 Mar 21

10

Philips Semiconductors

Product specification

10-bit high-speed low-power

analog-to-digital converter

TDA8762A

5. The analog bandwidth is defined as the maximum input sine wave frequency which can be applied to the device.

No glitches greater than 2 LSBs, neither any significant attenuation are observed in the reconstructed signal.

6. The analog input settling time is the minimum time required for the input signal to be stabilized after a sharp full-scale

input (square-wave signal) in order to sample the signal and obtain correct output data.

7. Effective bits are obtained via a Fast Fourier Transform (FFT) treatment taking 8K acquisition points per equivalent

fundamental period. The calculation takes into account all harmonics and noise up to half of the clock frequency

(NYQUIST frequency). Conversion to signal-to-noise ratio: S/N = EB

× 6.02 + 1.76 dB.

8. Intermodulation measured relative to either tone with analog input frequencies of 4.43 MHz and 4.53 MHz. The two

input signals have the same amplitude and the total amplitude of both signals provides full scale to the converter.

9. Measurement carried out using video analyser VM700A, where the video analog signal is reconstructed through a

digital-to-analog converter.

characteristics of the acquisition circuit; an external latch will ease the design if output data lines cannot be short to

minimize capacitance.

Fig.3 Explanation of note 3.

handbook, halfpage

RLAD

ROT

VRT

VRM

VRB

ROB

code 1023

code 0

7

6

9

MGD281

IL

RL