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MAX5492PC01500+T

P1-P3P4-P6P7-P8
MAX5492
10kΩ Precision-Matched
Resistor-Divider in SOT23
4 _______________________________________________________________________________________
FREQUENCY RESPONSE
MAX5492 toc05
FREQUENCY (kHz)
RESPONSE (dB)
10,0001000110100
-15
-12
-9
-6
-3
0
3
6
-18
0.1 100,000
RATIO = 1.1:1
C
L
= 10pF
SPECTRAL NOISE DENSITY
MAX5492 toc06
FREQUENCY (Hz)
NOISE (nV/√Hz)
10010 10001
100
10
V
P1-P2
= 10V
V
P1-P2
= 2V
RATIO = 1.1:1
TOTAL HARMONIC DISTORTION
PLUS NOISE RESPONSE
MAX5492 toc07
FREQUENCY (Hz)
THD+N (%)
10k1k100
0.001
0.01
0.1
1
10
100
0.0001
10 100k
RATIO = 1.1:1
20Hz TO 20kHz BANDPASS
Typical Operating Characteristics (continued)
(V
P1-P3
= 10V, T
A
= +25°C, unless otherwise noted.)
Pin Description
PIN NAME FUNCTION
1 P1 R1 Connection Terminal
2SL
Sense Connection for Low Side of Resistor String. Leave floating or connect in a Kelvin connection
configuration.
3 P2 R2 Connection Terminal
4 P3 Set-Point Connection Terminal
5SH
Sense Connection for High Side of Resistor String. Leave floating or connect in a Kelvin connection
configuration.
Detailed Description
The MAX5492 consists of two precision, low-ratio-drift
resistors with an end-to-end resistance of 10kΩ (R
1
+ R
2
).
(See Figure 1.) P3 is the set point of the divider. The
maximum working voltage of the MAX5492 is 40V.
This device offers a wide range of resistance ratios
(R
1
/R
2
) from 1:1 to 10:1 and is ideally suited for preci-
sion operational-amplifier gain/attenuation control. The
MAX5492 features a ±2kV ESD protection that
enhances system robustness. A maximum initial ratio
accuracy of 0.035% and a low ratio drift enhance sys-
tem accuracy.
Applications Information
Kelvin Sensing
Kelvin sensing can improve accuracy in sensitive appli-
cations. Apply a voltage or current at P1 and use sense
high (SH) and sense low (SL) to monitor the voltage at
the upper and lower ends of the resistor string.
MAX5492
10kΩ Precision-Matched
Resistor-Divider in SOT23
_______________________________________________________________________________________ 5
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 5-pin SOT23 package is 141°C/W. Calculate the
resulting temperature rise as:
∆T = 160mW x 141°C/W = 22.5°C
If the ratio temperature coefficient is 1.5ppm/°C (typ),
the total error introduced by self-heating is:
22.5°C x 1.5ppm/°C = 33.75ppm
P
V
R
V
k
mW
DISS
MAX
=
()
=
()
=
22
40
10
160
Ω
IN
P1
P2
P3
MAX5492
R
2
R
1
OUT
Figure 3. Buffered Attenuator
MAX5492
R
2
R
1
P1
P2
P3
IN
OUT
Figure 1. Inverting Amplifier Configuration
P1
P2
P3
MAX5492
R
2
R
1
OUT
IN
Figure 4. Attenuator with Buffer
MAX5492
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
MAX5492
10kΩ Precision-Matched
Resistor-Divider in SOT23
6 _______________________________________________________________________________________
Example Part Numbers
PREFIX MAX 5492 V A 10000 -T
ROOT PART NUMBER
MAX5492 = 10kΩ 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 10:1.
Format examples:
01000 = 1:1
02500 = 2.5:1
07538 = 7.538:1
10000 = 10:1
TAPE AND REEL
How to Order
PART NUMBER RESISTOR-RATIO RANGE
RESISTOR-RATIO
ACCURACY (% MAX)
RESISTOR RATIO
MAX5492PA02500-T 2.000 to 2.999 0.035 2.5:1
MAX5492RB03000-T 3.000 to 3.999 0.05 3:1
MAX5492UA07538-T 7.538 to 10.0 0.035 7.538:1
P1-P3P4-P6P7-P8

MAX5492PC01500+T

Mfr. #:
Buy MAX5492PC01500+T
Manufacturer:
Maxim Integrated
Description:
Resistor Networks & Arrays 10kOhm Precision Match Res/Divide
Lifecycle:
New from this manufacturer.
Delivery:
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