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Texas Instruments TLV40x1EVM (Rev. A) User guides
User's Guide
SNOU164A – September 2018 – Revised June 2019
TLV40x1EVM
The TLV40x1 devices are MicroPower, high-accuracy comparators with an internal 0.2V or 1.2V reference
and propagation delay of 450ns. The comparators are available in an ultra-small, WCSP package
measuring 0.73 mm × 0.73 mm. The TLV40x1EVM is intended to make it easier to evaluate or to integrate
the device in the user’s prototype system.
The EVM is comprised of four identical layouts (quadrants) where a different TLV40x1 device can be
installed. For user flexibility, each quadrant can be conveniently detached from the other quadrants by
flexing the EVM at the provided scribe lines. The shipped EVM has the TVL4021R1, TLV4031R1,
TLV4041R2, and TLV4041R1 installed in quadrants (I to IV) respectively.
The EVM board provides mounting holes which are compatible to an industry standard DIP package. A 8pin DIP socket, common 0.1 inch pin headers, or wires can be installed depending on the user’s
integration requirement.
Quadrant 1
Quadrant 2
U1_1 is the TLV4021R1
Quadrant 3
U1_2 is the TLV4031R1
U1_3 is the TLV4041R2
Scribe Line
Scribe Line
Quadrant 4
U1_4 is the TLV4041R1
Scribe Line
Figure 1. TLV40x1EVM Board Top View
1
2
3
Contents
TLV40x1EVM Block Diagram .............................................................................................
How to Use the TLV40x1EVM for Evaluation or System Prototypes ................................................
2.1
Usage Example .....................................................................................................
TLV40x1EVM Schematic ...................................................................................................
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TLV40x1EVM
2
3
3
4
1
TLV40x1EVM Block Diagram
1
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TLV40x1EVM Block Diagram
The block diagram for each Quadrant is identical with each Quadrant having a different TLV40x1 device
populated. For example, Quadrant 1 is populated with the TLV4021R1, Quadrant 2 is populated with the
TLV4031R1, Quadrant 3 is populated with the TLV4041R2. and Quadrant 4 is populated with the
TLV4041R1. See Table 2 for a description of each TLV40x1 family member.
V_POS
4
Quadrant 1
2
VPU
1
OUT
TLV40x1 Pins
IN_AUX
7
V+
B1
EVM Terminals
(8-Pin DIP)
IN
R3_1
0603
100k
TLV4021R1
+
R1_1
0603
DNP
OUT
t
8
A1
A2
IN
R2_1
0603
DNP
C1_1
0603
0.1u
0.2V
B2
V-
5
V_NEG
Figure 2. Block Diagram
Table 1. TLV40x1 and EVM "Quadrant" Board Signals
TL40x1 DEVICE
TLV40x1EVM DIP HOLES
PIN NUMBER
SIGNAL NAME
PIN NUMBER
SIGNAL NAME
A1
OUT
1
OUT
B1
V+
4
V_POS
B2
V–
5
V_NEG
A2
IN
8
IN
7
IN_AUX
2
VPU
3, 6
No Connection
Table 2. TLV40x1 Truth Table
2
DEVICE
REFERENCE
VOLTAGE
INPUT
CONFIGURATION
OUTPUT
TOPOLOGY
TLV4021R2
TLV4021R1
0.2V
1.2V
Non-Inverting
Open-Drain
TLV4031R2
TLV4031R1
0.2V
1.2V
Inverting
Open-Drain
TLV4041R2
TLV4041R1
0.2V
1.2V
Non-Inverting
Push-Pull
TLV4051R2
TLV4051R1
0.2V
1.2V
Inverting
Push-Pull
TLV40x1EVM
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How to Use the TLV40x1EVM for Evaluation or System Prototypes
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2
How to Use the TLV40x1EVM for Evaluation or System Prototypes
The TLV40x1EVM quadrant is assembled with the TLV40x1 device, a 0.1 µF ceramic capacitor (in 0603
package), and a 100 kΩ pull-up resistor (only for Quadrants I & II). If the application needs to scale down
the input voltage to a lower value, a pair of resistors R1 and R2 can be installed by the user. In this case,
connect the voltage to be monitored to IN_AUX (DIP PIN 7) instead of IN (DIP PIN 8).
Depending on the user’s setup or requirement, a standard 8-pin DIP socket or 0.1-inch pin headers may
be installed. Users may also solder wires directly to the DIP holes.
2.1
Usage Example
Figure 3 shows a typical use case of TLV4021R1 as an undervoltage monitor. Resistors R1 and R2 need
to be installed on the EVM and the voltage to be monitored is applied to IN_AUX (DIP PIN 7). The
configuration detects an undervoltage condition when the input voltage at IN_AUX drops below 2 V. The
output pull-up resistor R3 is connected to a 1.8 V supply through VPU (DIP PIN2). The example assumes
that the logic device that is connected to the output of the comparator operates at 1.8 V.
VMON
1.8V
(IN_AUX)
(VPU)
(V_POS)
R1
R3
V+
TLV4021R1
IN
R2
OUT
s5
Figure 3. Usage Example
Listed below is the equation for deriving values for R1 and R2. For more details on this application, please
refer to the Applications Section of the TLV4021 datasheet
(1)
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TLV40x1EVM
3
TLV40x1EVM Schematic
3
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TLV40x1EVM Schematic
V_POS
V_POS
4
2
IN
IN_AUX
V+
B1
EVM Terminals
(8-Pin DIP)
8
t
A1
A2
IN
R2_1
0603
DNP
1
C1_1
0603
0.1u
0.2V
B2
OUT
IN
8
R2_1
0603
DNP
Quadrant 4
VPU
A1
TLV4041R2
B2
V-
1
C1_1
0603
0.1u
1.2V
OUT
IN
8
t
R2_1
0603
DNP
VPU
A1
B2
V-
1
C1_1
0603
0.1u
0.2V
1
OUT
R3_1
0603
DNP
TLV4041R1
OUT
IN
+
R1_1
0603
DNP
OUT
A2
V+
B1
EVM Terminals
(8-Pin DIP)
+
IN
7
R3_1
0603
DNP
B1
OUT
t
IN_AUX
V+
R1_1
0603
DNP
2
TLV40x1 Pins
7
EVM Terminals
(8-Pin DIP)
A2
IN
2
R3_1
0603
100k
TLV4031R1
+
R1_1
0603
DNP
OUT
IN_AUX
V+
B1
EVM Terminals
(8-Pin DIP)
4
Quadrant 3
VPU
TLV40x1 Pins
7
R3_1
0603
100k
TLV4021R1
+
R1_1
0603
DNP
2
TLV40x1 Pins
7
V_POS
4
Quadrant 2
VPU
TLV40x1 Pins
IN_AUX
V_POS
4
Quadrant 1
8
OUT
t
A1
A2
IN
R2_1
0603
DNP
C1_1
0603
0.1u
1.2V
B2
V-
V-
5
5
5
5
V_NEG
V_NEG
V_NEG
V_NEG
Figure 4. TLV40x1EVM Schematic
4
TLV40x1EVM
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Revision History
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Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Original (September 2019) to A Revision ............................................................................................... Page
•
Changed the BOM for the EVM. All 4 Quadrants are now populated with different devices from the TLV40x1 family. ..... 2
SNOU164A – September 2018 – Revised June 2019
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Revision History
5
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