MAX9075EXK+T Maxim Integrated Products, MAX9075EXK+T Datasheet - Page 6

• Manufacturer Part Number: MAX9075EXK+T
• Description: IC COMPARATOR SNGL SC70-5
• Manufacturer: Maxim Integrated Products
• Type: General Purposer

Specifications of MAX9075EXK+T

• Number Of Elements: 1
• Output Type: CMOS, Push-Pull, Rail-to-Rail, TTL
• Voltage - Supply: 2.1 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 6-TSSOP (5 lead), SC-88A, SOT-353
• Number Of Channels: 1 Channel
• Product: Digital Comparators
• Offset Voltage (max): +/- 8 mV
• Input Bias Current (max): - 20 nA
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.1 V
• Supply Current (max): 6.6 uA
• Maximum Power Dissipation: 200 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Comparator Type: General Purpose
• No. Of Comparators: 1
• Response Time: 580ns
• Ic Output Type: CMOS, Push Pull, TTL
• Supply Current: 3µA
• Supply Voltage Range: 2.1V To 5.5V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: MAX9075EXK+T; MAX9075EXK+TTR

Low-Cost, Ultra-Small, 3µA
Single-Supply Comparators
The MAX9075/MAX9077 feature a 580ns propagation
delay from an ultra-low supply current of only 3µA per
comparator. These devices are capable of single-sup-
ply operation in the 2.1V to 5.5V range. Large internal
output drivers allow rail-to-rail output swing with up to
2mA loads. Both comparators offer a push-pull output
that sinks and sources current.
The MAX9075/MAX9077 are designed to maintain a
low-supply current during repeated transitions by limit-
ing the shoot-through current.
The input common-mode voltage range for these
devices extends from -0.2V to V
other comparators, the MAX9075/MAX9077 can oper-
ate at any differential input voltage within these limits.
Input bias current is typically -5nA if the input voltage is
between the supply rails.
Although the comparators have a very high gain, useful
gain is limited by noise. The comparator has a wide-
band peak-to-peak noise of approximately 70µV.
6
SOT23
Noise Considerations, Comparator Input
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1
2
3
4
5
MAX9075
SC70
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—
—
—
—
—
1
2
3
4
5
PIN
µMAX/SO
Detailed Description
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—
—
1
4
3
2
8
5
6
7
MAX9077
Comparator Output
CC
SOT23
- 1.2V. Unlike many
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—
—
1
2
4
3
8
5
6
7
NAME
OUTA
OUTB
GND
INA+
INB+
OUT
INA-
INB-
V
IN+
IN-
CC
Hysteresis extends the comparator’s noise margin by
increasing the upper threshold and decreasing the
lower threshold. A voltage divider from the output of the
comparator sets the trip voltage. Therefore, the trip
voltage is related to the output voltage. Set the hystere-
sis with three resistors using positive feedback, as
shown in Figure 1.
The design procedure is as follows:
1) Choose R3. The leakage current of IN+ may cause a
2) Choose the hysteresis voltage (V
3) Calculate R1 as follows:
Comparator Output
Output of Comparator A
Ground
Noninverting Comparator Input
Noninverting Input of Comparator A
Inverting Comparator Input
Inverting Input of Comparator A
Positive Supply Voltage
Noninverting Input of Comparator B
Inverting Input of Comparator B
Output of Comparator B
small error; however, the current through R3 can be
approximately 500nA and still maintain accuracy.
The added supply current due to the circuit at the
trip point is V
for R3, as this keeps the current well below the sup-
ply current of the chip.
voltage between the upper and lower thresholds. In
this example, choose V
V
R1 = R3 x V
REF
= 1.2V and V
HYS
Applications Information
CC
/R3; 10MΩ is a good practical value
/ V
CC
CC
FUNCTION
= 5V.
= 10MΩ x 0.05 / 5 = 100kΩ
HYS
Pin Description
Adding Hysteresis
= 50mV and assume
HYS
), which is the