MC1650 データシートの表示（PDF） - Motorola => Freescale

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MC1650

Dual A/D Converter   

Motorola => Freescale 

MC1650 MC1651

FIGURE 1 — SWITCHING TIME TEST CIRCUIT @ 25°C

Vin to Channel A

VCC =

+ 7.0 Vdc

VXX =

+ 2.0 Vdc

Vout to

Channel B

VR1, VR2, VR3

P1

P2

P3

VX

P4

0.1 µF

0.1 µF Coax

10 7 1 16

VCC Gnd

+

–

D

Q

C

Q

+

–

D

Q

C

Q

VEE

0.1 µF

VEE =

–3.2 Vdc

Note: All power supply and logic levels are shown shifted 2.0 volts positive.

50 ohm termination to ground located in each scope channel input.

All input and output cables to the scope are equal lengths of 50 ohm coaxial cable.

FIGURE 2 — SWITCHING AND PROPAGATION WAVEFORMS @ 25°C

The pulse levels shown are used to check ac parameters

over the full common-mode range.

V — INPUT TO OUTPUT

CLOCK TO OUTPUT

Vin

50%

tpd

tpd

VIH P1

50%

VR Vin

VIL

50%

40 ns

30 ns

30 ns

30 ns

40 ns

90%

Q

50%

10%

P4

50%

30 ns

t+

t–

C

tpd

tpd

Test pulses: t +, t – = 1.5 ± 0.2 ns (10% to 90%)

f = 5.0 MHz

50% Duty Cycle

50%

Q

P4: t +, t – = 1.5 ± 0.2 ns.

TEST PULSE LEVELS

P1

P2

P3

MC1650 MC1651 MC1650 MC1651 MC1650 MC1651

VIH +2.1 V +2.1 V +5.0 V +4.5 V –0.3 V –0.8 V

VR +2.0 V +2.0 V +4.9 V +4.4 V –0.4 V –0.9 V

VIL +1.9 V +1.9 V +4.8 V +4.3 V –0.5 V –1.0 V

VIH + 2.1 V

VR + 2.0 V

VIL + 1.9 V

+1.11 V

+0.31 V

MOTOROLA

4–338

MECL Data

DL122 — Rev 6

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