Rainbow-electronics MAX1303 Bedienungsanleitung PDF herunterladen (Seite 3)

MAX1302/MAX1303

8-/4-Channel, ±V

REF

Multirange Inputs,

Serial 16-Bit ADCs

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(AV

DD1

= AV

DD2

= DV

DDO

= 5V, AGND1 = DGND = DGNDO = AGND2 = AGND3 = 0, f

CLK

= 3.5MHz (50% duty cycle),

external clock mode, V

REF

= 4.096V (external reference operation), REFCAP = AV

DD1

, maximum single-ended bipolar input range

(±V

REF

), C

DOUT

= 50pF, C

SSTRB

= 50pF, T

= -40°C to +85°C, unless otherwise noted. Typical values are at T

= +25°C.)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX

UNITS

Differential inputs, FSR = 2 x V

REF

Single-ended inputs, FSR = V

REF

Single-ended inputs, FSR = V

REF

/ 2 85

Signal-to-Noise Ratio SNR

Single-ended inputs, FSR = V

REF

/ 4 82

Total Harmonic Distortion

(Up to the 5th Harmonic)

THD -98 dB

Spurious-Free Dynamic Range SFDR 92 99 dB

Aperture Delay t

Figure 21 15 ns

Aperture Jitter t

Figure 21

100

Channel-to-Channel Isolation

105

CONVERSION RATE

External clock mode, Figure 2

114

External acquisition mode, Figure 3 84Byte-Wide Throughput Rate

SAMPLE

Internal clock mode, Figure 4

106

ksps

ANALOG INPUTS (CH0–CH3 MAX1303, CH0–CH7 MAX1302, AGND1)

Small-Signal Bandwidth All input ranges, V

= 100mV

P-P

(Note 2) 1.5

MHz

Full-Power Bandwidth All input ranges, V

= 4V

P-P

(Note 2)

700

kHz

R[2:1] = 001

-V

REF

/ 4 +V

REF

/ 4

R[2:1] = 010

-V

REF

/ 2

R[2:1] = 011 0

REF

/ 2

R[2:1] = 100

-V

REF

/ 2 +V

REF

/ 2

R[2:1] = 101

-V

REF

R[2:1] = 110 0

REF

Input Voltage Range (Table 6) V

CH_

R[2:1] = 111

-V

REF

Tr ue- D i ffer enti al Anal og C om m on-

M od e V ol tag e Rang e

CMDR

DIF/SGL = 1 (Note 4)

-4.75 +5.50

Common-Mode Rejection Ratio CMRR

D IF/S G L = 1, i np ut vol tag e r ang e = ± V

R E F

/ 4

75 dB

Input Current I

CH_

-V

REF

< V

CH_

< +V

REF

-1500 +650

µA

Input Capacitance C

CH_

5pF

Input Resistance R

CH_

6kΩ

1 2 3 4 5 6 7 8 ... 30 31

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