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MAX132ENG 18-Bit ADC with Serial Interface MaximIC
Maxim Integrated MaximIC
MAX132ENG Datasheet PDF : 16 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
±18-Bit ADC with Serial Interface
ELECTRICAL CHARACTERISTICS (continued)
(V+ = 5V, V- = -5V, DGND = AGND = IN LO = REF- = 0V, REF+ = 545mV, RINT = 602k, CINT = 0.0047µF, CREF = 0.1µF,
fCLK = 32,768Hz, 60Hz mode, TA = TMIN to TMAX, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
DIGITAL SECTION
Output High
Output Low
Input High
Input Low
Input Current
Input Capacitance
DOUT, IOUT = -1mA
3.5 4.3
VOH DOUT, IOUT = -100µA
4.0 4.5
V
EOC, P0–P3, IOUT = -100µA
4.0 4.7
VOL
DOUT, IOUT = 1.6mA
EOC, P0–P3, IOUT = 100µA
0.1 0.4
V
0.1 0.4
VIH
Referred to DGND, 4.5V V+ 5.5V, CS, DIN, SCLK
2.4
V
VIL
Referred to DGND, 4.5V V+ 5.5V, CS, DIN, SCLK
0.8
V
IIN
CS, DIN, SCLK, and DOUT when three-stated
±10 ±500
nA
CIN CS, DIN, SCLK, and DOUT when three-stated
5
pF
INTERFACE TIMING
(Test Circuit of Figure 1, Figure 2, V+ = 5V, V- = -5V, DGND = AGND = 0V, TA = +25°C, unless otherwise noted.) (Note 3)
PARAMETER
CS Lead Time
CS Lag Time
SCLK High Time
SCLK Low Time
CS High Pulse Width
DIN to SCLK Setup Time
DIN to SCLK Hold Time
DOUT Access Time from Three-State
Data Valid
DOUT Disable Time to Three-State
Delay to P0–P3 High
Delay to P0–P3 Low
SYMBOL
t1
t2
t3
t4
t5
t6
t7
t8
t9
t10
t11
t12
CONDITIONS
See Figure 3
See Figure 4
MIN TYP MAX
500
400
400
300
1
0
200
320
60
320
230 350
230 350
UNITS
ns
ns
ns
ns
µs
ns
ns
ns
ns
ns
ns
ns
Note 1: ±18-bit accuracy achieved by averaging multiple conversions.
Note 2: Maximum deviation from best straight-line fit.
Note 3: Guaranteed by design, not tested.
Note 4: Difference in reading for equal positive and negative inputs near full scale.
_______________________________________________________________________________________ 3
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