MAX188BEWP+T Maxim Integrated Products, MAX188BEWP+T Datasheet - Page 6

• Manufacturer Part Number: MAX188BEWP+T
• Description: IC ADC 12BIT SERIAL 20-SOIC
• Manufacturer: Maxim Integrated Products
• Type: Data Acquisition System (DAS)r

Specifications of MAX188BEWP+T

• Resolution (bits): 12 b
• Sampling Rate (per Second): 133k
• Data Interface: Serial
• Voltage Supply Source: Dual ±
• Voltage - Supply: ±5V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Low-Power, 8-Channel,
Serial 12-Bit ADCs
6
__________________________________________Typical Operating Characteristics
_____________________________________________________________Pin Description
-0.05
0.30
0.25
0.20
0.15
0.10
0.05
0.00
PIN
1-8
10
11
9
________________________________________________________________________________________________
-60
-40
POWER-SUPPLY REJECTION
-20 0
CH0-CH7
vs. TEMPERATURE
NAME
TEMPERATURE (°C)
SHDN
VREF
V
SS
20
40
60
V
V
DD
SS
80
Sampling Analog Inputs
Negative Supply Voltage. Tie to -5V ±5% or AGND
Three-Level Shutdown Input. Pulling SHDN low shuts the MAX186/MAX188 down to 10µA (max)
supply current, otherwise the MAX186/MAX188 are fully operational. Pulling SHDN high puts the ref-
erence-buffer amplifier in internal compensation mode. Letting SHDN float puts the reference-buffer
amplifier in external compensation mode.
Reference Voltage for analog-to-digital conversion. Also, Output of the Reference Buffer Amplifier
(4.096V in the MAX186, 1.638 x REFADJ in the MAX188). Add a 4.7µF capacitor to ground when
using external compensation mode. Also functions as an input when used with a precision external
reference.
= 0V or -5V
= +5V ±5%
100
-100
-120
-140
120
-60
-20
-40
-80
20
0
140
0
2.456
2.455
2.454
2.453
2.452
MAX186/MAX188 FFT PLOT – 133kHz
-40 -20 0 20 40 60 80 100 120
INTERNAL REFERENCE VOLTAGE
vs. TEMPERATURE
TEMPERATURE (°C)
FREQUENCY
33.25kHz
FUNCTION
f t = 10kHz
f
T
s
A
= 133kHz
ft = 10kHz
fs = 133kHz
= +25°C
0.16
0.14
0.12
0.10
0.08
0.06
0.04
0.02
CHANNEL-TO-CHANNEL OFFSET MATCHING
0
-60
66.5kHz
-40
-20
vs. TEMPERATURE
TEMPERATURE (°C)
0
20
40
60
80
100
120
140