MAXIM MAX6220 Technical data
General Description
The MAX6220 is a low-noise, precision voltage reference with extremely low 20ppm/°C temperature coefficient over the automotive temperature range (-40°C to
+125°C) and excellent ±0.1% initial accuracy. This
device features buried-zener technology for low noise
performance. The load-regulation specification is guaranteed for source and sink currents up to 15mA.
Excellent line and load regulation and low output
impedance at high frequency make the MAX6220 ideal
for high-resolution data-conversion systems up to
16 bits. The MAX6220 is set for 2.5V, 4.096V, and
5.0V outputs.
Applications
High-Accuracy Industrial and Process Control
ATE Equipment
Precision Current Sources
Features
♦ Low 20ppm/°C Temperature Coefficient over
-40°C to +125°C Range
♦ Very Low 1.5µVp-p Noise (0.1Hz to 10Hz)
♦ ±0.1% Initial Accuracy
♦ ±15mA Output Source and Sink Current
♦ 8V to 40V Input Voltage Range
♦ Optional Noise Reduction and Voltage Trim
♦ Excellent Transient Response
♦ Low 20ppm/1000hr Long-Term Stability
♦ Stable for All Capacitive Loads
MAX6220
Low-Noise, Precision, +2.5V/+4.096V/+5V
Voltage Reference
________________________________________________________________ Maxim Integrated Products 1
Typical Operating Circuit
OUT
NR
TRIM
GND
I.C.
I.C.
IN
I.C.
SOIC
TOP VIEW
1
2
8
7
3
4
6
5
MAX6220
Pin Configuration
19-1930; Rev 0; 4/01
PART
TEMP. RANGE
PIN-
OUPUT
(V)
MAX6220ASA25
8 SO 2.5
MAX6220ASA41
8 SO 4.096
MAX6220ASA50
8 SO 5.0
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.
Ordering Information
查询MAX6220供应商
PACKAGE
VOLTAGE
8V TO 40V INPUT
IN
OUT
*
2.2µF
*OPTIONAL (STABLE WITH ALL CAPACITIVE LOADS)
NR
MAX6220
GND
TRIM
REFERENCE OUT
*
2.2µF
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
MAX6220
Low-Noise, Precision, +2.5V/+4.096V/+5V
Voltage Reference
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS—(+2.5V)
(VIN= +10V, I
OUT
= 0mA, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at TA= +25°C.)
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.
(Voltages Referenced to GND)
IN..............................................................................-0.3V to +42V
OUT, TRIM ...............................................................-0.3V to +12V
NR ..............................................................................-0.3V to +6V
OUT Short-Circuit to GND Duration (V
IN
≤ 12V)..........Continuous
OUT Short-Circuit to GND Duration (V
IN
≤ 42V) ........................5s
OUT Short-Circuit to IN Duration (V
IN
≤ 12V) ..............Continuous
Continuous Power Dissipation (T
A
= +70°C)
8-Pin SO (derate 5.9mW/°C above +70°C) ....................471mW
Operating Temperature Range...........................-40°C to +125°C
Storage Temperature Range ..............................-65°C to +150°C
Lead Temperature (soldering, 10s)...................................+300°C
PARAMETER
SYMBOL
CONDITIONS T
A
MIN
TYP
MAX
UNITS
Input Voltage Range V
IN
840V
Output Voltage V
OUT
V
Output Voltage Temperature
Coefficient (Note 1)
220
ppm/˚C
27
Line Regulation (Note 2)
∆V
IN
8V ≤ VIN ≥ 40V
45
ppm/V
16
Sourcing: 0mA ≤ I
OUT
≤ 15mA
15
16
Load Regulation (Note 2)
∆V
OUT
/
Sinking: -15mA ≤ I
OUT
≤ 0mA
30
ppm/mA
2.9
Supply Current I
IN
3.3
mA
Trim-Adjustment Range
(Figure 1) ±15
mV
Turn-On Settling Time t
ON
To ±0.01% of final value 5 µs
0.1Hz ≤ f ≥ 10Hz
µVp-p
Output Noise Voltage
(Note 3)
e
N
10Hz ≤ f ≥ 1kHz
2.8
µV
RMS
Temperature Hysteresis (Note 4) 20 ppm
Long-Term Stability
∆t = 1000hr 20 ppm
TCV
+25°C 2.497 2.500 2.503
OUT
∆V
/
OUT
∆I
OUT
∆V
OUT
∆V
OUT
+25°C
+25°C
+25°C
+25°C 1.8
±25
1.5
1.3
MAX6220
Low-Noise, Precision, +2.5V/+4.096V/+5V
Voltage Reference
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS—(+4.096V)
(VIN= +10V, I
OUT
= 0mA, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at TA= +25°C.)
PARAMETER
SYMBOL
CONDITIONS T
A
MIN
TYP
MAX
UNITS
Input Voltage Range V
IN
840V
Output Voltage V
OUT
V
Output VoltageTemperature
Coefficient (Note 1)
220
ppm/°C
27
Line Regulation (Note 2)
∆V
IN
8V ≤ VIN ≥ 40V
45
ppm/V
16
Sourcing: 0mA ≤ I
OUT
≤ 15mA
15
16
Load Regulation (Note 2)
∆V
OUT
/
Sinking: -15mA ≤ I
OUT
≤ 0mA
30
ppm/mA
1.9 3.1
Supply Current I
IN
3.5
mA
Trim-Adjustment Range
(Figure 1) ±24
mV
Turn-On Settling Time t
ON
To ±0.01% of final value 5 µs
0.1Hz ≤ f ≥ 10Hz 2.4 µVp-p
Output Noise Voltage
(Note 3)
e
N
10Hz ≤ f ≥ 1kHz 2.0 4.0 µV
RMS
Temperature Hysteresis (Note 4) 20 ppm
Long-Term Stability
∆t = 1000hr 20 ppm
TCV
∆V
∆I
∆V
∆V
OUT
/
OUT
OUT
OUT
OUT
+25°C 4.092 4.096 4.100
+25°C
+25°C
+25°C
+25°C
±40
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