MAX6350 Maxim Integrated Products, MAX6350 Datasheet

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MAX6350

Manufacturer Part Number
MAX6350
Description
Manufacturer
Maxim Integrated Products
Datasheet

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The MAX6325/MAX6341/MAX6350 are low-noise, preci-
sion voltage references with extremely low, 0.5ppm/°C
typical temperature coefficients and excellent, ±0.02%
initial accuracy. These devices feature buried-zener
technology for lowest noise performance. Load-regula-
tion specifications are guaranteed for source and sink
currents up to 15mA. Excellent line and load regulation
and low output impedance at high frequencies make
them ideal for high-resolution data-conversion systems
up to 16 bits.
The MAX6325 is set for a 2.5V output, the MAX6341 is
set for a 4.096V output, and the MAX6350 is set for a
5V output. All three provide for the option of external
trimming and noise reduction.
________________________Applications
19-1203; Rev 1; 1/01
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.
*OPTIONAL
2.2µF
High-Resolution Analog-to-Digital
and Digital-to-Analog Converters
High-Accuracy Reference Standard
High-Accuracy Industrial and Process Control
Digital Voltmeters
ATE Equipment
Precision Current Sources
*
Typical Operating Circuit
NR
________________________________________________________________ Maxim Integrated Products
8V TO 36V INPUT
1ppm/°C, Low-Noise, +2.5V/+4.096V/+5V
MAX6325
MAX6341
MAX6350
GND
General Description
IN
TRIM
OUT
2.2µF
REFERENCE OUT
*
o Ultra Low, 1ppm/°C Max Tempco
o Very Low, 1.5µVp-p Noise (0.1Hz to 10Hz)
o ±0.02% Initial Accuracy (MAX6350)
o ±15mA Output Source and Sink Current
o Low, 18mW Power Consumption (MAX6325)
o Industry-Standard Pinout
o Optional Noise Reduction and Voltage Trim
o Excellent Transient Response
o 8-Pin SO Package Available
o Low, 30ppm/1000hr Long-Term Stability
o Stable for All Capacitive Loads
Ordering Information continued at end of data sheet.
____________________________Features
MAX6325CPA
MAX6325CSA
MAX6325EPA
MAX6325ESA
MAX6325MJA
(MAX6325)
I.C. = INTERNALLY CONNECTED; DO NOT USE
TOP VIEW
PART
Voltage References
GND
I.C.
NR
IN
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
TEMP. RANGE
0°C to +70°C
0°C to +70°C
1
2
3
4
Ordering Information
MAX6325
MAX6341
MAX6350
DIP/SO
Pin Configuration
8 Plastic DIP
8 SO
8 Plastic DIP
8 SO
8 CERDIP
PIN-
PACKAGE
8
7
6
5
I.C.
I.C.
OUT
TRIM
TEMPCO
(ppm/
MAX
1.0
1.0
1.5
1.5
2.5
°
C)
1

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MAX6350 Summary of contents

Page 1

... The MAX6325 is set for a 2.5V output, the MAX6341 is set for a 4.096V output, and the MAX6350 is set for a 5V output. All three provide for the option of external trimming and noise reduction. ________________________Applications ...

Page 2

Low-Noise, +2.5V/+4.096V/+5V Voltage References ABSOLUTE MAXIMUM RATINGS (Voltages Referenced to GND) IN ................................................................................-0.3V to 40V OUT, TRIM..................................................................-0.3V to 12V NR.................................................................................-0. ≤ 12V)..........Continuous OUT Short-Circuit to GND Duration (V IN ≤ 40V) ........................5s OUT Short-Circuit to GND Duration ...

Page 3

Low-Noise, +2.5V/+4.096V/+5V ELECTRICAL CHARACTERISTICS—MAX6341 (V = +10V 0mA OUT A MIN PARAMETER SYMBOL Input Voltage Range V Output Voltage V OUT Output Voltage Temperature TCV Coefficient (Note 1) ∆V OUT Line ...

Page 4

... Low-Noise, +2.5V/+4.096V/+5V Voltage References ELECTRICAL CHARACTERISTICS—MAX6350 (V = +10V 0mA OUT A MIN PARAMETER SYMBOL Input Voltage Range V IN Output Voltage V OUT Output Voltage Temperature TCV OUT Coefficient (Note 1) ∆V OUT Line Regulation (Note 2) ∆V IN ∆V OUT Load Regulation (Note 2) ∆ ...

Page 5

... TEMPERATURE (°C) MAX6341 CHANGE IN OUTPUT VOLTAGE vs. OUTPUT CURRENT 300 T = +85°C A 200 100 T = +25° -100 T = -40°C A -200 -300 -40 -30 -20 - (mA) OUT SUPPLY CURRENT vs. TEMPERATURE 3.5 3.0 2.5 MAX6350 MAX6341 2.0 1.5 MAX6325 1.0 -55 -35 - 105 125 TEMPERATURE (°C) 5 ...

Page 6

... FREQUENCY (Hz) MAX6341 0.1Hz to 10Hz NOISE MAX6325- 0µF OUT NR 1s/div MAX6350 OUTPUT NOISE-VOLTAGE DENSITY vs. FREQUENCY 100 0µ 1µ 100 1k 10k FREQUENCY (Hz) RIPPLE REJECTION vs. FREQUENCY (C = 0µ MAX6325 MAX6341 90 85 MAX6350 100 1k 10k FREQUENCY (Hz) MAX6350 0.1Hz to 10Hz NOISE MAX6325- 0µF OUT NR 1s/div ...

Page 7

... LOAD-TRANSIENT RESPONSE (SINKING) MAX6325-20 2µs/div 10mA/div (SINKING) OUT 500µV/div OUT MAX6325 TURN-ON AND TURN-OFF TRANSIENT RESPONSE MAX6325- 0µF IN OUT NR 1µs/div 10V/div 1V/div OUT MAX6350 TURN-ON AND TURN-OFF TRANSIENT RESPONSE MAX6325- 0µF IN OUT NR 1µs/div 10V/div 1V/div OUT 10mA 0mA +10V 0 +10V 0 7 ...

Page 8

... Figure 3 shows how both a +5V and -5V precision ref- erence can be obtained from a single, unregulated +5V supply. A MAX865 generates approximately ±9V to operate the MAX6350 reference and MAX400 inverting amplifier. The +5V is inverted by the ultra-low offset MAX400 op amp. Resistor R1 is optional, and may be used to trim the ±5V references. R2 and R4 should be matched, both in absolute resistance and temperature coefficient ...

Page 9

... CERDIP MAX6350CPA 0°C to +70°C 8 Plastic DIP MAX6350CSA 0°C to +70° MAX6350EPA -40°C to +85°C 8 Plastic DIP MAX6350ESA -40°C to +85° MAX6350MJA -55°C to +125°C 8 CERDIP _______________________________________________________________________________________ Voltage References IN OUT MAX6350 R1 NR TRIM 10kΩ GND ___________________Chip Information TRANSISTOR COUNT: 435 MAX ...

Page 10

Low-Noise, +2.5V/+4.096V/+5V Voltage References ________________________________________________________Package Information 10 ______________________________________________________________________________________ ...

Page 11

... 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 ___________________11 © 2001 Maxim Integrated Products ...

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