Datasheet

MAX196/MAX198
Multirange, Single +5V, 12-Bit DAS
with 12-Bit Bus Interface
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= 5V ±5%; unipolar/bipolar range; external reference mode, V
REF
= 4.096V; 4.7µF at REF pin; external clock, f
CLK
= 2.0MHz
with 50% duty cycle; T
A
= T
MIN
to T
MAX
; unless otherwise noted. Typical values are at T
A
= +25°C.)
MAX198
MAX196
MAX198
MAX196
-600 360
I
IN
-1200 720
µA
±V
REF
/2 range
±V
REF
range
±5V range
-1200 10
±10V range
-600 10
Bipolar
Input Voltage Range
(see Table 3)
V
IN
-10 10
-5 5
MAX196
-V
REF
V
REF
-V
REF
/2 V
REF
/2
MAX198
Bipolar
MAX196
MAX198
0V to 5V or 0V to V
REF
/2 range
0V to 10V or 0V to V
REF
range
±5V or ±V
REF
/2 range
±10V or ±V
REF
range
Buffer Voltage Gain 1.6384 V/V
REFADJ Adjustment Range ±1.5 %With recommended circuit (Figure 1)
Capacitive Bypass at REF 4.7 µF
REFADJ Output Voltage 2.465 2.500 2.535 V
Load Regulation 10 mV0mA to 0.5mA output current (Note 6)
0V
REF
0V
REF
/2
Unipolar
Input Resistance
∆V
IN
∆I
IN
21
kΩ
16
360
Unipolar
Input Current
720
Bipolar
0V to 5V range
0.1 10
0V to 10V range
Unipolar
2.5
Small-Signal Bandwidth
5
MHz
PARAMETER SYMBOL MIN TYP MAX UNITS
2.5
-3dB
rolloff
1.25
010
V
05
Track/Hold Acquisition Time 3 µs
Input Capacitance 40 pF
REF Output Voltage V
REF
4.076 4.096 4.116 V
REF Output Tempco
(Contact Maxim Applications for
guaranteed temperature drift
specifications)
15
ppm/°C
Output Short-Circuit Current 30 mA
CONDITIONS
(Note 5)
T
A
= +25°C
MAX196_C/MAX198_C
f
CLK
= 2.0MHz
TC V
REF
40MAX196_M/MAX198_M
30MAX196_E/MAX198_E
ANALOG INPUT
INTERNAL REFERENCE