MAX1062 Datasheet, PDF (8/17 Pages) Maxim Integrated Products – 14-Bit, %V, 200ksps ADC with 10μA Shutdown

14-Bit, +5V, 200ksps ADC with 10µA Shutdown
V_DD
1mA
DOUT
DOUT
1mA
C_LOAD = 50pF
C_LOAD = 50pF
DGND
a) V_OL TO V_OH
DGND
b) HIGH-Z TO V_OL AND V_OH TO V_OL
Figure 1. Load Circuits for DOUT Enable Time and SCLK to
DOUT Delay Time
V_DD
1mA
DOUT
DOUT
1mA
C_LOAD = 50pF
C_LOAD = 50pF
DGND
a) V_OH TO HIGH-Z
DGND
b) V_OL TO HIGH-Z
Figure 2. Load Circuits for DOUT Disable Time
CS
SCLK
t_CSS
t_CL
t_CH
t_CP
t_CSW
t_CSH
t_DO
t_DV
DOUT
Figure 3. Detailed Serial Interface Timing
Input Bandwidth
The ADC’s input tracking circuitry has a 4MHz small-
signal bandwidth, so it is possible to digitize high-
speed transient events and measure periodic signals
with bandwidths exceeding the ADC’s sampling rate by
using undersampling techniques. To avoid aliasing of
unwanted high-frequency signals into the frequency
band of interest, use antialias filtering.
Analog Input Protection
Internal protection diodes, which clamp the analog
input to AV_DD and/or AGND, allow the input to swing
from AGND - 0.3V to AV_DD + 0.3V, without damaging
the device.
If the analog input exceeds 300mV beyond the sup-
plies, limit the input current to 10mA.
t_TR
AIN
AIN
CS
SCLK
V_REF
REF
DOUT
4.7µF
+5V
AV_DD ^MAX1062
0.1µF
+5V
DV_DD
AGND
0.1µF
DGND
CS
SCLK
DOUT
GND
Figure 4. Typical Operating Circuit
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