Datasheet

MAX196/MAX198
Multirange, Single +5V, 12-Bit DAS
with 12-Bit Bus Interface
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Table 2. Control-Byte Format
D7 (MSB) D6 D5 D4 D3 D2 D1 D0 (LSB)
PD1 PD0 ACQMOD RNG BIP A2 A1 A0
Table 4. Clock and Power-Down Selection
PD1 PD0 DEVICE MODE
0 0 Normal Operation / External Clock Mode
0 1 Normal Operation / Internal Clock Mode
1 0
Standby Power-Down (STBYPD); clock mode
is unaffected
1 1
Full Power-Down (FULLPD); clock mode is
unaffected
Table 3. Range and Polarity Selection
BIP RNG
INPUT RANGE (V)
(MAX196)
0 0 0 to 5
0 1 0 to 10
1 0 ±5
1 1 ±10
Table 5. Channel Selection
A2 A1 A0 CH0 CH1 CH2 CH3 CH4 CH5
0 0 0
∗
0 0 1
∗
0 1 0
∗
0 1 1
∗
1 0 0
∗
1 0 1
∗
BIT NAME DESCRIPTION
7, 6 PD1, PD0 These two bits select the clock and power-down modes (Table 4).
5 ACQMOD 0 = internally controlled acquisition (6 clock cycles), 1 = externally controlled acquisition
4 RNG Selects the full-scale voltage magnitude at the input (Table 3).
3 BIP Selects unipolar or bipolar conversion mode (Table 3).
2, 1, 0 A2, A1, A0 These are address bits for the input mux to select the “on” channel (Table 5).
INPUT RANGE (V)
(MAX198)
0 to V
REF
/2
0 to V
REF
±V
REF
/2
±V
REF