Datasheet

MAX1303
4-Channel, ±V
REF
Multirange Inputs,
Serial 16-Bit ADC
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
AVDD1
= V
AVDD2
= V
DVDD
= V
DVDDO
= 5V, V
AGND1
= V
VDGND
= V
DGNDO
= V
AGND2
= V
AGND3
= 0V, f
CLK
= 3.5MHz (50% duty
cycle), external clock mode, V
REF
= 4.096V (external reference operation), REFCAP = AVDD1, maximum single-ended bipolar input
range (±V
REF
), C
DOUT
= 50pF, C
SSTRB
= 50pF, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Differential inputs, FSR = 2 x V
REF
90
Single-ended inputs, FSR = V
REF
88
Single-ended inputs, FSR = V
REF
/2 85
Signal-to-Noise Ratio SNR
Single-ended inputs, FSR = V
REF
/4 82
dB
Total Harmonic Distortion
(Up to the 5th Harmonic)
THD -98 dB
Spurious-Free Dynamic Range SFDR 92 99 dB
Aperture Delay t
AD
Figure 19 15 ns
Aperture Jitter t
AJ
Figure 19 100 ps
Channel-to-Channel Isolation 105 dB
CONVERSION RATE
External clock mode, Figure 1 114
External acquisition mode, Figure 2 84Byte-Wide Throughput Rate f
SAMPLE
Internal clock mode, Figure 3 106
ksps
ANALOG INPUTS (CH0–CH3, AGND1)
Small-Signal Bandwidth All input ranges, V
IN
= 100mV
P-P
(Note 2) 1.5 MHz
Full-Power Bandwidth All input ranges, V
IN
= 4V
P-P
(Note 2) 700 kHz
R[2:1] = 001 -V
REF
/4 +V
REF
/4
R[2:1] = 010 -V
REF
/2 0
R[2:1] = 011 0 +V
REF
/2
R[2:1] = 100 -V
REF
/2 +V
REF
/2
R[2:1] = 101 -V
REF
0
R[2:1] = 110 0 +V
REF
Input Voltage Range (Table 6) V
CH_
R[2:1] = 111 -V
REF
+V
REF
V
Tr ue- D i ffer enti al Anal og C om m on-
M od e V ol tag e Rang e
V
CMDR
DIF/SGL = 1 (Note 4) -4.75 +5.50 V
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