MAX1168BCEG+ Maxim Integrated Products, MAX1168BCEG+ Datasheet - Page 13

• Manufacturer Part Number: MAX1168BCEG+
• Description: IC ADC 16BIT 200KSPS 24-QSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX1168BCEG+

• Number Of Bits: 16
• Sampling Rate (per Second): 200k
• Data Interface: MICROWIRE™, QSPI™, Serial, SPI™
• Number Of Converters: 1
• Power Dissipation (max): 762mW
• Voltage Supply Source: Analog and Digital
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 24-QSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The MAX1168 features a 16-bit-wide data-transfer
mode that includes a longer acquisition time (11.5
clock cycles). Longer acquisition times are useful in
applications with input source resistances greater than
1kΩ. Noise increases when using large source resis-
tances. To improve the input signal bandwidth under
AC conditions, drive AIN_ with a wideband buffer
(>10MHz) that can drive the ADC’s input capacitance
and settle quickly.
The ADC’s input-tracking circuitry has a 4MHz small-
signal bandwidth, making possible the digitization of
high-speed transient events and the measurement of
Figure 4. MAX1168 Functional Diagram
Multichannel, 16-Bit, 200ksps Analog-to-Digital
______________________________________________________________________________________
AGND
DSPR
SCLK
DSEL
AIN0
AIN1
AIN2
AIN3
AIN4
AIN5
AIN6
AIN7
REF
DIN
CS
OSCILLATOR
ANALOG-INPUT
MULTIPLEXER
REFERENCE
Input Bandwidth
AGND
BIAS
MULTIPLEXER
REFCAP
INPUT REGISTER
RAIL
AZ
CONTROL
BUFFER
DGND
SUCCESSIVE-APPROXIMATION
DAC
ANALOG-SWITCH FINE TIMING
AV
REGISTER
DD
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 anti-alias filtering.
Internal protection diodes, which clamp the analog
input to AV
(AGND - 0.3V) to (AV
device. If the analog input exceeds 300mV beyond the
supplies, limit the input current to 10mA.
COMPARATOR
MAX1168
ACCUMULATOR
DD
MEMORY
DV
DD
or AGND, allow the input to swing from
OUTPUT
DD
+ 0.3V) without damaging the
Converters
Analog Input Protection
DOUT
EOC
DSPX
13