MAX11604EEE+ Maxim Integrated Products, MAX11604EEE+ Datasheet - Page 20

• Manufacturer Part Number: MAX11604EEE+
• Description: IC ADC SERIAL 8BIT 12CH 16-QSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX11604EEE+

• Number Of Bits: 8
• Sampling Rate (per Second): 188k
• Data Interface: I²C, Serial
• Number Of Converters: 1
• Power Dissipation (max): 1.75mW
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-SSOP (0.150", 3.90mm Width)
• Resolution: 8 bit
• Interface Type: I2C
• Snr: 49 dB
• Voltage Reference: 4.096 V
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 4.5 V
• Maximum Power Dissipation: 666.7 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Input Voltage: 5 V
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

2.7V to 3.6V and 4.5V to 5.5V, Low-Power,
4-/8-/12-Channel 2-Wire Serial 8-Bit ADCs
Figure 12. Unipolar Transfer Function
Figure 14. Power-Supply and Grounding Connections
20
R* = 5Ω
______________________________________________________________________________________
1...111
1...110
1...101
1...100
0...011
0...010
0...001
0...000
*OPTIONAL
3V/5V
OUTPUT CODE
V
REF
DD
0
1
0.1µF
2
MAX11600–
MAX11605
3
GND
INPUT VOLTAGE (LSB)
SUPPLIES
V
LOGIC
1 LSB =
252
= 3V/5V
3V/5V
253
CIRCUITRY
DIGITAL
254
V
256
REF
255
DGND
GND
256
For best performance, use PC boards. Wire-wrap config-
urations are not recommended since the layout should
ensure proper separation of analog and digital traces. Do
not run analog and digital lines parallel to each other, and
do not lay out digital signal paths underneath the ADC
package. Use separate analog and digital PCB ground
sections with only one star point (Figure 14) connecting
the two ground systems (analog and digital). For lowest
noise operation, ensure the ground return to the star
ground’s power supply is low impedance and as short as
possible. Route digital signals far away from sensitive
analog and reference inputs.
High-frequency noise in the power supply (V
influence the proper operation of the ADC’s fast
comparator. Bypass V
0.1µF capacitor located as close as possible to the
MAX11600–MAX11605 power-supply pin. Minimize
capacitor lead length for best supply-noise rejection,
and add an attenuation resistor (5Ω) if the power sup-
ply is extremely noisy.
Figure 13. Bipolar Transfer Function
0...111
0...110
0...101
0...100
0...001
0...000
1...111
1...011
1...010
1...001
1...000
(TWO'S COMPLEMENT)
REF
OUTPUT CODE
-128
Layout, Grounding, and Bypassing
-127
-126 -125
INPUT VOLTAGE (LSB)
NEGATIVE INPUT
DD
-1
0
to the star ground with a
+1
+124
1 LSB =
+125
+126
V
256
REF
+127
DD
+128
) could