
MAX1304–MAX1306/MAX1308–MAX1310/MAX1312–MAX1314
8-/4-/2-Channel, 12-Bit, Simultaneous-Sampling ADCs
with ±10V, ±5V, and 0 to +5V Analog Input Ranges
4 _______________________________________________________________________________________
EXTERNAL REFERENCE (REF and REF
MS
are externally driven)
REF Input Voltage Range V
REF
2.0 2.5 3.0 V
REF Input Resistance R
REF
(Note 5) 5 kΩ
REF Input Capacitance 15 pF
REF
MS
Input Voltage Range
V
REFMS
2.0 2.5 3.0 V
REF
MS
Input Resistance
R
REFMS
(Note 6) 5 kΩ
REF
MS
Input Capacitance 15 pF
REF+ Output Voltage
V
REF+
3.850
V
COM
2.600
V
REF-
1.350
V
Differential Reference Voltage
V
REF+
-
V
REF
-
2.500
V
DIGITAL INPUTS (D0–D7, RD, WR, CS, CLK, SHDN, CHSHDN, CONVST)
Input-Voltage High V
IH
0.7 x DV
DD
V
Input-Voltage Low V
IL
0.3 x DV
DD
V
Input Hysteresis 20 mV
Input Capacitance C
IN
15 pF
Input Current I
IN
V
IN
= 0 or DV
DD
0.02
±1 µA
CLOCK-SELECT INPUT (INTCLK/EXTCLK)
Input-Voltage High V
IH
0.7 x AV
DD
V
Input-Voltage Low V
IL
0.3 x AV
DD
V
DIGITAL OUTPUTS (D0–D11, EOC, EOLC)
Output-Voltage High V
OH
I
SOURCE
= 0.8mA, Figure 1 DV
DD
- 0.6 V
Output-Voltage Low V
OL
I
SINK
= 1.6mA, Figure 1 0.4 V
D0–D11 Tri-State Leakage Current
0.06
1µA
D 0–D 11 Tr i - S tate Outp ut
C ap aci tance
RD = high or CS = high 15 pF
POWER SUPPLIES
Analog Supply Voltage
AV
DD
4.75 5.25
DV
DD
2.70 5.25
V
MAX1304/MAX1305/MAX1306,
all channels selected
55 60
MAX1308/MAX1309/MAX1310,
all channels selected
54 60
Analog Supply Current
I
AVDD
MAX1312/MAX1313/MAX1314,
all channels selected
54 60
mA
ELECTRICAL CHARACTERISTICS (continued)
(AV
DD
= +5V, DV
DD
= +3V, AGND = DGND = 0, V
REF
= V
REFMS
= +2.5V (external reference), C
REF
= C
REFMS
= 0.1µF, C
REF+
=
C
REF-
= 0.1µF, C
REF+-to-REF-
= 2.2µF || 0.1µF, C
COM
= 2.2µF || 0.1µF, C
MSV
= 2.2µF || 0.1µF (unipolar devices), MSV = AGND (bipo-
lar devices), f
CLK
= 16.67MHz 50% duty cycle, INTCLK/EXTCLK = AGND (external clock), SHDN = DGND, T
A
= T
MIN
to T
MAX
,
unless otherwise noted. Typical values are at T
A
= +25°C. See Figures 3 and 4.)
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