Datasheet

MAX1132/MAX1133
16-Bit ADC, 200ksps, 5V Single-Supply
with Reference
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(AV
DD
= DV
DD
= +5V ±5%, f
SCLK
= 4.8MHz, external clock (50% duty cycle), 24 clocks/conversion (200ksps), bipolar input, external
V
REF
= +4.096V, V
REFADJ
= AV
DD
, C
REF
= 2.2µF, C
CREF
= 1µF, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at
T
A
= +25°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
ANALOG INPUT
Unipolar 0 12
MAX1132
Bipolar -12 12
Unipolar 0 4.096
Input Range
MAX1133
Bipolar - 4.096 4.096
V
Unipolar 7.5 10.0
MAX1132
Bipolar 5.9 7.9
Unipolar 100 1000
Input Impedance
MAX1133
Bipolar 3.4 4.5
kΩ
Input Capacitance 32 pF
CONVERSION RATE
Internal Clock Frequency 4 MHz
Aperture Delay t
AD
10 ns
Aperture Jitter t
AS
50 ps
MODE 1 (24 External Clock Cycles per Conversion)
Unipolar 0.1 3
External Clock Frequency f
SCLK
Bipolar 0.1 4.8
MHz
Unipolar 4.17 125
Sample Rate f
S
= f
SCLK
/24
Bipolar 4.17 200
ksps
Unipolar 8 240
Conversion Time (Note 4)
t
CONV+ACQ
=
24 / f
SCLK Bipolar 5 240
µs
MODE 2 (Internal Clock Mode)
External Clock Frequency
(Data Transfer Only)
8 MHz
Conversion Time SSTRB low pulse width 4 6 µs
Unipolar 1.82
Acquisition Time
Bipolar 1.14
µs
MODE 3 (32 External Clock Cycles per Conversion)
External Clock Frequency f
SCLK
Unipolar or bipolar 0.1 4.8 MHz
Sample Rate f
S
= f
SCLK
/32 Unipolar or bipolar 3.125 150 ksps
Conversion Time (Note 4)
t
CONV+ACQ
=
32 / f
SCLK
Unipolar or bipolar 6.67 320 µs
INTERNAL REFERENCE
Output Voltage V
REF
4.056 4.096 4.136 V
REF Short-Circuit Current 24 mA
Output Tempco ±20 ppm/
o
C