MAXIM MAX6133 Technical data

General Description
The MAX6133 high-precision, low-power, low-dropout voltage reference features a low 3ppm/°C (max) temper­ature coefficient and a low dropout voltage (200mV, max). This series-mode device features bandgap tech­nology for low-noise performance and excellent accura­cy. Load regulation specifications are guaranteed for source currents up to 15mA. The laser-trimmed, high­stability thin-film resistors, together with post-package trimming, guarantee an excellent initial accuracy specifi­cation (0.04%, max). The MAX6133 is a series voltage reference and consumes only 40µA of supply current (virtually independent of supply voltage). Series-mode references save system power and use minimal external components compared to 2-terminal shunt references.
The MAX6133 is available in 8-pin µMAX and SO pack­ages. The unique blend of tiny packaging and excellent precision performance make these parts ideally suited for portable and communication applications.
Applications
Precision Regulators A/D and D/A Converters Power Supplies High-Accuracy Industrial and Process Control Hand-Held Instruments
Features
Low Temperature Coefficient
3ppm/°C (max), SO 5ppm/°C (max), µMAX
Tiny 5mm
3mm µMAX Package
Low 200mV (max) Dropout Voltage
Low 40µA Quiescent Current
±0.04% (max) Initial Accuracy
Low 16µV
P-P
Noise (0.1Hz to 10Hz) (2.5V Output)
15mA Output Source-Current Capability
Wide 2.7V to 12.6V Supply Voltage
Excellent Line (30µV/V, max) and
Load (0.05mV/mA, max) Regulation
MAX6133
3ppm/°C, Low-Power, Low-Dropout
Voltage Reference
________________________________________________________________ Maxim Integrated Products 1
Pin Configuration
Ordering Information
MAX6133
OUT
SUPPLY INPUT
GND
*INPUT CAPACITORS ARE OPTIONAL.
IN
0.1µF*
REFERENCE OUTPUT
0.1µF
Typical Operating Circuit
19-2266; Rev 2; 6/03
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Note: Two-number part suffix indicates output voltage option.
Selector Guide
SUFFIX VOLTAGE OUTPUT
25 2.500V
30 3.000V
41 4.096V
50 5.000V
PART TEMP RANGE PIN-PACKAGE
MAX6133A_ _ -40°C to +125°C 8 µMAX 0.06 5
MAX6133AASA_ _ -40°C to +125°C 8 SO 0.04 3
MAX6133BASA_ _ -40°C to +125°C 8 SO 0.08 5
MAXIMUM INITIAL
ACCURACY (%)
TOP VIEW
*INTERNALLY CONNECTED, DO NOT CONNECT.
MAXIMUM TEMPCO
(ppm/°C, -40°C to +85°C)
N.C.
N.C.
1
2
MAX6133
3
4
SO/µMAX
87I.C.*
N.C.IN
OUT
6
I.C.*GND
5
MAX6133
3ppm/°C, Low-Power, Low-Dropout Voltage Reference
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICSMAX6133_25 (V
OUT
= 2.500V)
(VIN= 5V, C
LOAD
= 0.1µF, I
OUT
= 0, TA= T
MIN
to T
MAX
. Typical values are at TA = +25°C, unless otherwise noted.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Voltage (with Respect to GND)
IN ........................................................................-0.3V to +13V
OUT..............................................-0.3V to +6V or (V
IN
+ 0.3V)
OUT Short Circuit to IN or GND Duration ...............................60s
Continuous Power Dissipation (T
A
= +70°C)
8-Pin µMAX (derate 5.5mW/°C above +70°C) .............362mW
8-Pin SO (derate 5.88mW/°C above +70°C)................471mW
Operating Temperature Range .........................-40°C to +125°C
Storage Temperature Range .............................-65°C to +150°C
Junction Temperature......................................................+150°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Output Voltage V
Output Voltage Accuracy
Output Voltage Temperature Coefficient (Note 1)
Input Voltage Range V
Line Regulation ∆V
Load Regulation ∆V
Dropout Voltage (Note 2)
Quiescent Supply Current
Output Short-Circuit Current
Output Voltage Noise e
Turn-On Settling Time t
Thermal Hysteresis (Note 3)
Long-Term Stability t = 1000 hours
OUT
TCV
OUT
IN
/VIN2.7V VIN 12.6V 2 30 µV/V
OUT
/I
OUT
OUT
V
DO
I
IN
I
SC
n
ON
TA = +25°C
T
= +25°C
A
A grade SO
B grade SO
µMAX
Inferred from line regulation 2.7 12.6 V
-100µA I
V
OUT
V
OUT
TA = +25°C4060
TA = -40°C to +125°C85
Short to GND: V
Short to VIN: V
0.1Hz f 10Hz 16 µV
10Hz f 1kHz 12 µV
V
settles to ±0.01% of final value 500 µs
OUT
A grade SO 2.4990 2.5000 2.5010
B grade SO 2.4980 2.5000 2.5020
µMAX 2.4985 2.5000 2.5015
A grade SO -0.04 +0.04
B grade SO -0.08 +0.08
µMAX -0.06 +0.06
TA = -40°C to +85°C13
T
= -40°C to +125°C47
A
TA = -40°C to +85°C35
T
= -40°C to +125°C510
A
TA = -40°C to +85°C15
T
= -40°C to +125°C27
A
15mA 0.003 0.05 mV/mA
OUT
= 0.1%, I
= 0.1%, I
= 1mA 0.02 0.2
OUT
= 10mA 0.2 0.4
OUT
= 0V 90
OUT
= V
OUT
IN
SO 40
µMAX 145
-2
120 ppm
V
%
ppm/°C
V
µA
mA
P-P
RMS
ppm
MAX6133
3ppm/°C, Low-Power, Low-Dropout
Voltage Reference
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICSMAX6133_30 (V
OUT
= 3.0000V)
(VIN= 5V, C
LOAD
= 0.1µF, I
OUT
= 0, TA= T
MIN
to T
MAX
. Typical values are at TA = +25°C, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Output Voltage V
Output Voltage Accuracy
Output Voltage Temperature Coefficient (Note 1)
Input Voltage Range V
Line Regulation ∆V
Load Regulation ∆V
Dropout Voltage (Note 2)
Quiescent Supply Current
Output Short-Circuit Current
Output Voltage Noise e
Turn-On Settling Time t
Thermal Hysteresis (Note 3)
Long-Term Stability t = 1000 hours
OUT
TCV
OUT
IN
/VIN3.2V VIN 12.6V 2 30 µV/V
OUT
/I
OUT
OUT
V
DO
I
IN
I
SC
n
ON
TA = +25°C
= +25°C
T
A
A grade SO
B grade SO
µMAX
Inferred from line regulation 3.2 12.6 V
-100µA I
V
OUT
V
OUT
TA = +25°C4060
TA = -40°C to +125°C85
Short to GND: V
Short to VIN: V
0.1Hz f 10Hz 24 µV
10Hz f 1kHz 15 µV
V
settles to ±0.01% of final value 600 µs
OUT
A grade SO 2.9988 3.0000 3.0012
B grade SO 2.9976 3.0000 3.0024
µMAX 2.9982 3.0000 3.0018
A grade SO -0.04 +0.04
B grade SO -0.08 +0.08
µMAX -0.06 +0.06
TA = -40°C to +85°C13
= -40°C to +125°C47
T
A
TA = -40°C to +85°C35
= -40°C to +125°C510
T
A
TA = -40°C to +85°C15
T
= -40°C to +125°C27
A
15mA 0.003 0.06 mV/mA
OUT
= 0.1%, I
= 0.1%, I
= 1mA 0.01 0.2
OUT
= 10mA 0.2 0.4
OUT
= 0V 90
OUT
= V
OUT
IN
SO 40
µMAX 145
-2
120 ppm
V
%
ppm/°C
V
µA
mA
P-P
RMS
ppm
MAX6133
3ppm/°C, Low-Power, Low-Dropout Voltage Reference
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICSMAX6133_41 (V
OUT
= 4.096V)
(VIN= 5V, C
LOAD
= 0.1µF, I
OUT
= 0, TA= T
MIN
to T
MAX
. Typical values are at TA = +25°C, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Output Voltage V
Output Voltage Accuracy
Output Voltage Temperature Coefficient (Note 1)
Input Voltage Range V
Line Regulation ∆V
Load Regulation ∆V
Dropout Voltage (Note 2)
Quiescent Supply Current
Output Short-Circuit Current
Output Voltage Noise e
Turn-On Settling Time t
Thermal Hysteresis (Note 3)
Long-Term Stability t = 1000 hours
OUT
TCV
OUT
IN
/VIN4.2V VIN 12.6V 2 40 µV/V
OUT
/I
OUT
OUT
V
DO
I
IN
I
SC
n
ON
TA = +25°C
= +25°C
T
A
A grade SO
B grade SO
µMAX
Inferred from line regulation 4.2 12.6 V
-100µA I
V
OUT
V
OUT
TA = +25°C4565
TA = -40°C to +125°C85
Short to GND: V
Short to VIN: V
0.1Hz f 10Hz 32 µV
10Hz f 1kHz 22 µV
V
settles to ±0.01% of final value 800 µs
OUT
A grade SO 4.0943 4.0960 4.0977
B grade SO 4.0927 4.0960 4.0993
µMAX 4.0935 4.0960 4.0985
A grade SO -0.04 +0.04
B grade SO -0.08 +0.08
µMAX -0.06 +0.06
TA = -40°C to +85°C13
T
A
TA = -40°C to +85°C35
T
A
TA = -40°C to +85°C15
T
A
15mA 0.003 0.08 mV/mA
OUT
= 0.1%, I
= 0.1%, I
= 1mA 0.01 0.2
OUT
= 10mA 0.2 0.4
OUT
= 0V 90
OUT
= V
OUT
IN
SO 40
µMAX 145
V
%
= -40°C to +125°C47
= -40°C to +125°C510
= -40°C to +125°C27
-2
120 ppm
ppm/°C
V
µA
mA
P-P
RMS
ppm
MAX6133
3ppm/°C, Low-Power, Low-Dropout
Voltage Reference
_______________________________________________________________________________________ 5
ELECTRICAL CHARACTERISTICSMAX6133_50 (V
OUT
= 5.000V)
(VIN= 5.5V, C
LOAD
= 0.1µF, I
OUT
= 0, TA= T
MIN
to T
MAX
. Typical values are at TA = +25°C, unless otherwise noted.)
Note 1: The MAX6133 is 100% drift-tested for TA= T
MIN
to T
MAX
, as specified.
Note 2: Dropout Voltage is the minimum voltage at which V
OUT
changes 0.1% from V
OUT
at VIN= 5V (VIN= 5.5V for V
OUT
= 5V).
Note 3: Thermal Hysteresis is defined as the change in the initial +25°C output voltage after cycling the device from T
MAX
to T
MIN
.
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Output Voltage V
Output Voltage Accuracy
Output Voltage Temperature Coefficient (Note 1)
Input Voltage Range V
Line Regulation ∆V
Load Regulation ∆V
Dropout Voltage (Note 2)
Quiescent Supply Current
Output Short-Circuit Current
Output Voltage Noise e
Turn-On Settling Time t
Thermal Hysteresis (Note 3)
Long-Term Stability t = 1000 hours
TA = +25°C
T
A grade SO
B grade SO
µMAX
Inferred from line regulation 5.2 12.6 V
/VIN5.2V VIN 12.6V 2 50 µV/V
-100µA I
OUT
V
V
TA = +25°C4060
TA = -40°C to +125°C85
Short to GND: V
Short to VIN: V
0.1Hz f 10Hz 40 µV
10Hz f 1kHz 26 µV
V
TCV
OUT
OUT
V
OUT
IN
DO
I
IN
I
SC
ON
OUT
/I
n
= +25°C
A
= 0.1%, I
OUT
= 0.1%, I
OUT
settles to ±0.01% of final value 1000 µs
OUT
A grade SO 4.9980 5.0000 5.0020
B grade SO 4.9960 5.0000 5.0040
µMAX 4.9970 5.0000 5.0030
A grade SO -0.04 +0.04
B grade SO -0.08 +0.08
µMAX -0.06 +0.06
TA = -40°C to +85°C13
= -40°C to +125°C47
T
A
TA = -40°C to +85°C35
= -40°C to +125°C510
T
A
TA = -40°C to +85°C15
T
= -40°C to +125°C27
A
15mA 0.01 0.10 mV/mA
OUT
= 1mA 0.02 0.2
OUT
= 10mA 0.2 0.4
OUT
= 0V 90
OUT
= V
OUT
IN
SO 40
µMAX 145
-2
120 ppm
V
%
ppm/°C
V
µA
mA
P-P
RMS
ppm
MAX6133
3ppm/°C, Low-Power, Low-Dropout Voltage Reference
6 _______________________________________________________________________________________
Typical Operating Characteristics
(VIN= 5V, I
OUT
= 0, TA = +25°C, unless otherwise noted.) (Note 4)
SUPPLY CURRENT vs. INPUT VOLTAGE
(V
OUT
= 2.5V)
MAX6133 toc09
INPUT VOLTAGE (V)
SUPPLY CURRENT (µA)
12119 103 4 5 6 7 81 2
15
30
45
60
75
90
105
120
135
150
0
013
TA = +85°C
TA = +125°C
TA = +25°C
TA = -40°C
-120
-80
-100
-60
-40
-20
0
0.0001 0.010.001 0.1 10 100 1000
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (V
OUT
= 5V)
MAX6133 toc08
FREQUENCY (kHz)
PSRR (dB)
1
VIN = 5.5V
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (V
OUT
= 2.5V)
FREQUENCY (kHz)
0.0001 0.1 10 1000.001 0.01 1000
PSRR (dB)
0
-120
-100
-80
-60
-40
-20
MAX6133 toc07
1
DROPOUT VOLTAGE vs. OUTPUT CURRENT
(V
OUT
= 5V)
MAX6133 toc06
OUTPUT CURRENT (mA)
DROPOUT VOLTAGE (mV)
181612 144 6 8 102
50
100
150
200
250
300
350
400
450
500
550
600
0
020
TA = +85°C
TA = +125°C
TA = +25°C
TA = -40°C
VIN = 5.5V
DROPOUT VOLTAGE vs. OUTPUT CURRENT
(V
OUT
= 2.5V)
MAX6133 toc05
OUTPUT CURRENT (mA)
DROPOUT VOLTAGE (mV)
18161412108642
100
200
300
400
500
600
700
0
020
TA = +85°C
TA = +125°C
TA = +25°C
TA = -40°C
LOAD REGULATION
(V
OUT
= 5V)
MAX6133 toc04
OUTPUT CURRENT (mA)
OUTPUT VOLTAGE (V)
18
2
46 10
12 14816
4.9985
4.9990
4.9995
5.0000
5.0005
5.0010
5.0015
5.0020
4.9980 020
TA = +25°C
VIN = 5.5V
TA = +125°C
TA = +85°C
TA = -40°C
LOAD REGULATION
(V
OUT
= 2.5V)
MAX6133 toc03
OUTPUT CURRENT (mA)
OUTPUT VOLTAGE (V)
201814 1646810122
2.5005
2.5010
2.4990
2.4995
2.5000
2.5015
2.5020
2.5025
2.5030
2.5035
2.5040
0
TA = +25°C
TA = +125°C
TA = +85°C
TA = -40°C
OUTPUT VOLTAGE vs. TEMPERATURE
(V
OUT
= 5V)
MAX6133 toc02
TEMPERATURE (°C)
OUTPUT VOLTAGE (V)
1109565 80-10 5 20 35 50-25
4.9985
4.9990
4.9995
5.0000
5.0005
5.0010
4.9980
-40 125
3 TYPICAL UNITS V
IN
= 5.5V
OUTPUT VOLTAGE vs. TEMPERATURE
(V
OUT
= 2.5V)
MAX6133 toc01
TEMPERATURE (°C)
OUTPUT VOLTAGE (V)
1109565 80-10 5 20 35 50-25
2.4994
2.4996
2.4998
2.5000
2.5002
2.5004
2.5006
2.5008
2.5010
2.4992
-40 125
3 TYPICAL UNITS
MAX6133
3ppm/°C, Low-Power, Low-Dropout
Voltage Reference
_______________________________________________________________________________________ 7
Typical Operating Characteristics (continued)
(VIN= 5V, I
OUT
= 0, TA = +25°C, unless otherwise noted.) (Note 4)
LOAD TRANSIENT
(V
OUT
= 2.5V)
MAX6133 toc15
2.5V
0mA
10mA
I
OUT
10mA/div
V
OUT
50mV/div AC-COUPLED
400µs/div
C
OUT
= 10µF
LOAD TRANSIENT
(V
OUT
= 2.5V)
MAX6133 toc14
2.5V
-100µA
1mA
1ms/div
I
OUT
1mA/div
V
OUT
50mV/div AC-COUPLED
C
OUT
= 0.1µF
LOAD TRANSIENT
(V
OUT
= 2.5V)
MAX6133 toc13
2.5V
0mA
10mA
I
OUT
10mA/div
V
OUT
50mV/div AC-COUPLED
400µs/div
C
OUT
= 0.1µF
0.1Hz TO 10Hz OUTPUT NOISE (V
OUT
= 5V)
MAX6133 toc12
V
OUT
10µV/div
1s/div
VIN = 5.5V
0.1Hz TO 10Hz OUTPUT NOISE (V
OUT
= 2.5V)
MAX6133 toc11
V
OUT
4µV/div
1s/div
SUPPLY CURRENT vs. INPUT VOLTAGE
(V
OUT
= 5V)
MAX6133 toc10
INPUT VOLTAGE (V)
SUPPLY CURRENT (µA)
12119 103 4 5 6 7 81 2
20
40
60
80
100
120
140
160
180
200
220
0
013
TA = +85°C
TA = +125°C
TA = +25°C
TA = -40°C
VIN = 5.5V
MAX6133
3ppm/°C, Low-Power, Low-Dropout Voltage Reference
8 _______________________________________________________________________________________
Typical Operating Characteristics (continued)
(VIN= 5V, I
OUT
= 0, TA = +25°C, unless otherwise noted.) (Note 4)
TURN-ON TRANSIENT
(V
OUT
= 2.5V)
MAX6133 toc21
5V
0V
2.5V
V
OUT
1V/div
V
IN
2V/div
2ms/div
C
OUT
= 10µF
0V
TURN-ON TRANSIENT
(V
OUT
= 5V)
MAX6133 toc20
5.5V
0V
5V
V
OUT
2V/div
V
IN
2V/div
400µs/div
VIN = 5.5V
C
OUT
= 0.1µF
0V
TURN-ON TRANSIENT
(V
OUT
= 2.5V)
MAX6133 toc19
5V
0V
2.5V
V
OUT
1V/div
V
IN
2V/div
100µs/div
0V
C
OUT
= 0.1µF
LINE TRANSIENT
(V
OUT
= 5V)
MAX6133 toc18
6.5V
5V
5.5V
V
OUT
10mV/div AC-COUPLED
V
IN
500mV/div AC-COUPLED
1ms/div
C
OUT
= 0.1µF
VIN = 5.5V
LINE TRANSIENT
(V
OUT
= 2.5V)
MAX6133 toc17
5.5V
2.5V
4.5V
V
OUT
10mV/div AC-COUPLED
V
IN
500mV/div AC-COUPLED
400µs/div
C
OUT
= 0.1µF
LOAD TRANSIENT
(V
OUT
= 2.5V)
MAX6133 toc16
2.5V
-100µA
1mA
I
OUT
1mA/div
V
OUT
20mV/div AC-COUPLED
1ms/div
C
OUT
= 10µF
MAX6133
3ppm/°C, Low-Power, Low-Dropout
Voltage Reference
_______________________________________________________________________________________ 9
Note 4: Many of the MAX6133 Typical Operating Characteristics are extremely similar. The extremes of these characteristics are
found in the MAX6133 (2.5V output) and the MAX6133 (5V output). The Typical Operating Characteristics of the remainder of the MAX6133 family typically lie between these two extremes and can be estimated based on their output voltages.
Typical Operating Characteristics (continued)
(VIN= 5V, I
OUT
= 0, TA = +25°C, unless otherwise noted.) (Note 4)
5.5V
0V
5V
0V
TURN-ON TRANSIENT
(V
= 5V)
OUT
2ms/div
VIN = 5.5V
C
OUT
MAX6133 toc22
= 10µF
V
IN
2V/div
V
OUT
2V/div
LONG-TERM STABILITY vs. TIME
= 5.0V)
(V
5.0008
5.0007
5.0006
5.0005
5.0004
5.0003
(V)
5.0002
OUT
V
5.0001
5.0000
4.9999
4.9998
4.9997
4.9996 0 400200 600 800100 500300 700 900 1000
OUT
TIME (HOURS)
2.5008
2.5007
2.5006
2.5005
(V)
OUT
V
2.5004
2.5003
2.5002
2.5001 0400200 600 800100 500300 700 900 1000
2 TYPICAL UNITS SO PACKAGE
LONG-TERM STABILITY vs. TIME
= 2.5V)
(V
OUT
2 TYPICAL UNITS SO PACKAGE
TIME (HOURS)
5.0014
MAX6133 toc25
5.0012
5.0010
5.0008
(V)
OUT
V
5.0006
5.0004
5.0002
5.0000 0 400200 600 800100 500300 700 900 1000
LONG-TERM STABILITY vs. TIME
(V
2.5010
2.5008
MAX6133 toc23
2.5006
2.5004
(V)
2.5002
OUT
V
2.5000
2.4998
2.4996
2.4994 0 400200 600 800100 500300 700 900 1000
TIME (HOURS)
LONG-TERM STABILITY vs. TIME
= 5.0V)
(V
OUT
2 TYPICAL UNITS µMAX PACKAGE
TIME (HOURS)
OUT
= 2.5V)
2 TYPICAL UNITS
µ
MAX6133 toc26
MAX PACKAGE
MAX6133 toc24
MAX6133
3ppm/°C, Low-Power, Low-Dropout Voltage Reference
10 ______________________________________________________________________________________
Applications Information
Bypassing/Load Capacitance
For the best line-transient performance, decouple the input with a 0.1µF ceramic capacitor as shown in the Typical Operating Circuit. Place the capacitor as close to IN as possible. When transient performance is less important, no capacitor is necessary. The MAX6133 family requires a minimum output capacitance of 0.1µF for stability and is stable with capacitive loads (includ­ing the bypass capacitance) of up to 100µF. In applica­tions where the load or the supply can experience step changes, a larger output capacitor reduces the amount of overshoot (undershoot) and improves the circuit’s transient response. Place output capacitors as close to the device as possible.
Supply Current
The quiescent supply current of the MAX6133 series reference is typically 40µA and is virtually independent of the supply voltage. In the MAX6133 family, the load current is drawn from the input only when required, so supply current is not wasted and efficiency is maxi­mized at all input voltages. This improved efficiency reduces power dissipation and extends battery life. When the supply voltage is below the minimum-speci­fied input voltage (as during turn-on), the devices can draw up to 150µA beyond the nominal supply current. The input voltage source must be capable of providing this current to ensure reliable turn-on.
Thermal Hysteresis
Thermal hysteresis is the change in the output voltage at TA = +25°C before and after the device is cycled over its entire operating temperature range. Hysteresis is caused by differential package stress appearing across the bandgap core transistors. The typical ther­mal hysteresis value is 120ppm for both SO and µMAX packages.
Turn-On Time
These devices typically turn on and settle to within
0.01% of their final value in <1ms. The turn-on time can increase up to 2ms with the device operating at the minimum dropout voltage and the maximum load.
Low-Power, 14-Bit DAC
with MAX6133 as a Reference
Figure 1 shows a typical application circuit for the MAX6133 providing both the power supply and precision reference voltage for a 14-bit high-resolution, serial­input, voltage-output digital-to-analog converter. The MAX6133 with a 2.5V output provides the reference volt­age for the DAC.
Pin Description
Figure 1. 14-Bit High-Resolution DAC and Positive Reference From a Single 3V Supply
PIN NAME FUNCTION
1, 3, 7 N.C. No Connection. Not connected internally. Leave unconnected or connect to GND.
2 IN Positive Power-Supply Input
4 GND Ground
5, 8 I.C. Internally Connected. Do not connect externally.
6 OUT Reference Output Voltage. Connect a 0.1µF minimum capacitor to GND.
3V SUPPLY
REF
V
DD
MAX5143MAX6133
ANALOG OUTPUT
GND
IN
2.5V
OUT
GND
MAX6133
3ppm/°C, Low-Power, Low-Dropout
Voltage Reference
______________________________________________________________________________________ 11
Figure 3. Temperature Coefficient vs. Operating Temperature Range for a 1LSB Maximum Error
Negative Low-Power Voltage Reference
As shown in Figure 2, the MAX6133 can be used to develop a negative voltage reference using the MAX400, a rail-to-rail op-amp with low power, low noise, and low offset. The circuit only provides a good negative reference and is ideal for space- and cost­sensitive applications since it does not use resistors.
Temperature Coefficient vs.
Operating Temperature Range
for a 1LSB Maximum Error
In a data converter application, the converters refer­ence voltage must stay within a certain limit to keep the error in the data converter smaller than the resolution limit through the operating temperature range. Figure 3 shows the maximum allowable reference-voltage tem­perature coefficient that keeps the conversion error to less than 1LSB. This is a function of the operating tem­perature range (T
MAX
- T
MIN
) with the converter resolu­tion as a parameter. The graph assumes the reference-voltage temperature coefficient as the only parameter affecting accuracy. In reality, the absolute static accuracy of a data converter is dependent on the combination of many parameters such as integral non­linearity, differential nonlinearity, offset error, gain error, as well as voltage reference changes.
Chip Information
TRANSISTOR COUNT: 656
PROCESS: BiCMOS
Figure 2. Negative Low-Power Voltage Reference
POSITIVE SUPPLY
0.1µF
0.1µF
0.1µF
V+
MAX400
V-
0.1µF
OUT
IN
MAX6133
GND
-V
OUT
10,000
1000
100
TEMPERATURE
COEFFICIENT
(ppm/°C)
10
1
0.1
0.01 110
OPERATING TEMPERATURE RANGE (T
MAX
- T
) (°C)
MIN
8 BIT
10 BIT
12 BIT
14 BIT
16 BIT
18 BIT
20 BIT
100
MAX6133
3ppm/°C, Low-Power, Low-Dropout Voltage Reference
12 ______________________________________________________________________________________
Package Information
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.)
N
1
TOP VIEW
e
FRONT VIEW
INCHES
DIM
MIN
0.053A
0.004
A1
0.014
B
0.007
C e 0.050 BSC 1.27 BSC
0.150
HE
D
A
B
A1
C
L
E H 0.2440.228 5.80 6.20
0.016L
VARIATIONS:
INCHES
MINDIM
D
0.189 0.197 AA5.004.80 8
0.337 0.344 AB8.758.55 14
D
0∞-8∞
MAX
0.069
0.010
0.019
0.010
0.157
0.050
MAX
0.3940.386D
MILLIMETERS
MAX
MIN
1.35
1.75
0.10
0.25
0.35
0.49
0.19
0.25
3.80 4.00
0.40 1.27
MILLIMETERS
MAX
MIN
9.80 10.00
N MS012
16
AC
SOICN .EPS
SIDE VIEW
PROPRIETARY INFORMATION
TITLE:
PACKAGE OUTLINE, .150" SOIC
21-0041
REV.DOCUMENT CONTROL NO.APPROVAL
1
B
1
MAX6133
3ppm/°C, Low-Power, Low-Dropout
Voltage Reference
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 13
© 2003 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.)
0.6±0.1
0.6±0.1
8
b
E H
A1
A
ÿ 0.50±0.1
1
D
TOP VIEW
A2
e
FRONT VIEW
4X S
BOTTOM VIEW
c
L
SIDE VIEW
8
1
DIM
A A1 A2 b
c D
e
E
H
L
α
S
INCHES
MIN
-
0.002
0.030
0.010
0.005
0.116
0.0256 BSC
0.116
0.188
0.016 0∞
0.0207 BSC
MAX
0.043
0.006
0.037
0.014
0.007
0.120
0.120
0.198
0.026 6∞
MILLIMETERS
MIN
0.05 0.15
0.25 0.36
0.13 0.18
2.95 3.05
2.95 3.05
4.78
0.41
MAX
- 1.10
0.950.75
0.65 BSC
5.03
0.66
0.5250 BSC
6∞0∞
α
8LUMAXD.EPS
PROPRIETARY INFORMATION
TITLE:
PACKAGE OUTLINE, 8L uMAX/uSOP
REV.DOCUMENT CONTROL NO.APPROVAL
21-0036
1
J
1
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