links Maxim Integrated Products, links Datasheet - Page 10

• Manufacturer Part Number: links
• Manufacturer: Maxim Integrated Products

2.7V to 3.6V and 4.5V to 5.5V, Low-Power,
4-/8-/12-Channel 2-Wire Serial 8-Bit ADCs
The MAX11600–MAX11605 feature input tracking cir-
cuitry with a 2MHz small signal bandwidth. The 2MHz
input bandwidth makes it 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 high-fre-
quency signals being aliased into the frequency band
of interest, anti-alias filtering is recommended.
Figure 3. MAX11604/MAX11605 Simplified Functional Diagram
Figure 4. Equivalent Input Circuit
10
______________________________________________________________________________________
AIN3/REF
AIN0
AIN1
AIN2
GND
Analog Input Bandwidth
AIN11/REF
AIN10
GND
AIN0
AIN1
AIN2
AIN3
AIN4
AIN5
AIN6
AIN7
AIN8
AIN9
SDA
SCL
V
DD
ANALOG INPUT MUX
CONFIGURATION REGISTER
ANALOG
INPUT
MUX
INPUT SHIFT REGISTER
SETUP REGISTER
REF
4.096V (MAX11604)
2.048V (MAX11605)
T/H
REFERENCE
8-BIT
ADC
CONTROL
LOGIC
C
T/H
Internal protection diodes clamp the analog input to
V
swing from (GND - 0.3V) to (V
ing damage to the device. For accurate conversions,
the inputs must not go more than 50mV below GND or
above V
than 50mV, the input current should be limited to 2mA.
DD
and GND. These diodes allow the analog inputs to
MAX11604
MAX11605
OSCILLATOR
INTERNAL
DD
OUTPUT SHIFT
REGISTER AND
12-BYTE RAM
Analog Input Range and Protection
. If the analog input exceeds V
REF
CAPACITIVE
DAC
THE MAX11600/MAX11601/MAX11604/MAX11605
USE THE SAME PIN FOR AIN_ AND REF, WHILE THE
MAX11602/MAX11603 USE DIFFERENT PINS.
SEE THE PIN DESCRIPTION SECTION.
MAX11600
MAX11601
DD
+ 0.3V) without caus-
DD
by more