OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

MAX5491WC30000+T

P1-P3P4-P6P7-P7
MAX5491
Applications Information
Self-Heating and Error
Applying a voltage across terminals P1 and P2 causes
the device to heat up due to power dissipation. In high-
voltage applications, consider the error in resistance-
ratio temperature coefficient caused by self-heating.
The worst-case self-heating occurs when the operating
voltage attains its maximum value. Approximate the
result of power dissipation under this condition as:
The thermal resistance from junction to ambient, θ
J-A
,
for a 3-pin SOT23 package is 141°C/W. Calculate the
resulting temperature rise as:
∆T = 83.3mW x 141°C/W = 11.7°C
If the ratio temperature coefficient is 2ppm/°C (typ), the
total error introduced by self-heating is:
11.7°C x 2ppm/°C = 23.4ppm
P
V
R
V
k
mW
DISS
MAX
.=
()
=
()
=
22
50
30
83 3
Ω
Precision-Matched Resistor-Divider in SOT23
4 _______________________________________________________________________________________
IN
P1
P2
P3
MAX5491
R
2
R
1
OUT
Figure 3. Buffered Attenuator
MAX5491
R
2
R
1
P1
P2
P3
IN
OUT
Figure 1. Inverting Amplifier Configuration
P1
P2
P3
MAX5491
R
2
R
1
OUT
IN
Figure 4. Attenuator with Buffer
MAX5491
R
2
R
1
P1
P2
P3
IN
OUT
Figure 2. Noninverting Amplifier Configuration
A
V
V
R
R
OUT
IN
==−
1
2
A
V
V
R
R
OUT
IN
==+1
1
2
A
V
V
R
RR
OUT
IN
==
+
2
12
A
V
V
R
RR
OUT
IN
==
+
2
12
Typical Applications
Example Part Numbers
MAX5491
Precision-Matched Resistor-Divider in SOT23
_______________________________________________________________________________________ 5
PREFIX MAX 5491 V A 10000 -T
ROOT PART NUMBER
MAX5491 = 30kΩ End-to-End
RATIO RANGE
L through W. Resistor ratio must fall in the appropriate
ratio range. (See Table 2.)
RATIO ACCURACY
A = 0.035% (max); B = 0.05% (max); C = 0.1% (max)
RESISTANCE RATIO
Five number ratio designator. Ratios available from 1:1 to 30:1.
Format examples:
010000 = 1:1
02500 = 2.5:1
07538 = 7.538:1
25000 = 25:1
TAPE AND REEL
How to Order
PART RESISTOR-RATIO RANGE
RESISTOR-RATIO
ACCURACY (% MAX)
RESISTOR RATIO
MAX5491RA02500-T 2.000 to 2.899 0.035 2.5:1
MAX5491VC10000-T 10.000 to 15.999 0.100 10:1
MAX5491SB03200-T 2.900 to 3.999 0.050 3.2:1
MAX5491UA07538-T 6.000 to 9.999 0.035 7.538:1
Table 1. Standard Ratios*
PART RESISTOR RATIO
RESISTOR-RATIO
SUFFIX
RESISTOR-RATIO
ACCURACY (% MAX)
TOP MARK
MAX5491LA01000-T 1:1 01000 0.035 FZPD
MAX5491LB01000-T 1:1 01000 0.050 FZPE
MAX5491LC01000-T 1:1 01000 0.100 FZPF
MAX5491MA01100-T 1.1:1 01100 0.035 FZPA
MAX5491MB01100-T 1.1:1 01100 0.050 FZPB
MAX5491MC01100-T 1.1:1 01100 0.100 FZPC
MAX5491NA01500-T 1.5:1 01500 0.035 FZOX
MAX5491NB01500-T 1.5:1 01500 0.050 FZOY
MAX5491NC01500-T 1.5:1 01500 0.100 FZOZ
MAX5491PA02000-T 2:1 02000 0.035 FZOO
MAX5491PB02000-T 2:1 02000 0.050 FZOP
MAX5491PC02000-T 2:1 02000 0.100 FZOQ
MAX5491RA02500-T 2.5:1 02500 0.035 FZPP
MAX5491
Precision-Matched Resistor-Divider in SOT23
6 _______________________________________________________________________________________
Table 1. Standard Ratios* (continued)
PART RESISTOR RATIO
RESISTOR-RATIO
SUFFIX
RESISTOR-RATIO
ACCURACY (% MAX)
TOP MARK
MAX5491RB02500-T 2.5:1 02500 0.050 FZPQ
MAX5491RC02500-T 2.5:1 02500 0.100 FZON
MAX5491SA03200-T 3.2:1 03200 0.035 FZOU
MAX5491SB03200-T 3.2:1 03200 0.050 FZOV
MAX5491SC03200-T 3.2:1 03200 0.100 FZOW
MAX5491TA05000-T 5:1 05000 0.035 FZOR
MAX5491TB05000-T 5:1 05000 0.050 FZOS
MAX5491TC05000-T 5:1 05000 0.100 FZOT
MAX5491UA07538-T 7.538:1 07538 0.035 FZPM
MAX5491UB07538-T 7.538:1 07538 0.050 FZPN
MAX5491UC07538-T 7.538:1 07538 0.100 FZPO
MAX5491VA10000-T 10:1 10000 0.035 FZPJ
MAX5491VB10000-T 10:1 10000 0.050 FZPK
MAX5491VC10000-T 10:1 10000 0.100 FZPL
MAX5491WA30000-T 30:1 30000 0.035 FZPG
MAX5491WB30000-T 30:1 30000 0.050 FZPH
MAX5491WC30000-T 30:1 30000 0.100 FZPI
*Standard ratios are available for ordering in any quantity. Nonstandard ratios are also available for values between 1:1 to 30:1.
A minimum order quantity of 10,000 units is required for nonstandard ratios. Please contact factory for more information.
Table 2. Ratio Ranges
LETTER SUFFIX RESISTOR-RATIO RANGE
L 1.000 to 1.099
M 1.100 to 1.349
N 1.350 to 1.699
P 1.700 to 2.000
R 2.001 to 2.899
S 2.900 to 3.999
T 4.000 to 5.999
U 6.000 to 9.999
V 10.000 to 15.999
W 16.000 to 30.000
Chip Information
TRANSISTOR COUNT: 0
PROCESS: BiCMOS
P1-P3P4-P6P7-P7

MAX5491WC30000+T

Mfr. #:
Buy MAX5491WC30000+T
Manufacturer:
Maxim Integrated
Description:
Resistor Networks & Arrays Precision Match Res/Divide
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet