19-2765; Rev 3; 8/11
EVALUATION KIT AVAILABLE
MAX174/MX574A/MX674A
Industry-Standard, Complete 12-Bit ADCs
General Description
The MAX174/MX574A/MX674A are complete 12-bit
analog-to-digital converters (ADCs) that combine high
speed, low-power consumption, and on-chip clock and
voltage reference. The maximum conversion times are
8µs (MAX174), 15µs (MX674A), and 25µs (MX574A).
Maxim’s BiCMOS construction reduces power dissipa-
tion 3 times (150mW) over comparable devices. The
internal buried zener reference provides low-drift and
low-noise performance. External component require-
ments are limited to only decoupling capacitors and fixed
resistors. The versatile analog input structure allows for
0 to +10V or 0 to +20V unipolar or ±5V or ±10V bipolar
input ranges with pin strapping.
The MAX174/MX574A/MX674A use standard micropro-
cessor interface architectures and can be interfaced to
8-, 12-, and 16-bit wide buses. Three-state data outputs
are controlled by
CS,
CE, and R/C logic inputs.
Ordering Information
appears at end of data sheet.
Features
S
Complete ADC with Reference and Clock
S
12-Bit Resolution and Linearity
S
No Missing Codes Over Temperature
S
150mW Power Dissipation
S
8µs (MAX174), 15µs (MX674A), and 25µs (MX574A)
Max Conversion Times
S
Precision Low TC Reference: 10ppm/NC
S
Monolithic BiCMOS Construction
S
150ns Maximum Data Access Time
Applications
Digital Signal Processing
High-Accuracy Process Control
High-Speed Data Acquisition
Electro-Mechanical Systems
Functional Diagram
V
L
1
R
2R
9.950kI
5kI
12-BIT
DAC
AGND
9
DGND
15
V
CC
7
V
EE
11
BIPOFF
12
10V
IN
20V
IN
13
14
5kI
REFIN
10
12
SAR
2
3
4
REFOUT
8
+10V
REF
MAX174
MX574A
MX674A
4
LOW
NIBBLE
16
D0
19
D3
4
MIDDLE
NIBBLE
20
D4
D7
23
4
HIGH
NIBBLE
24
D8
27
D11
CLOCK
AND
CONTROL
LOGIC
12/8
CS
A0
28 6
5
STS CE R/C
For related parts and recommended products to use with this part, refer to
www.maxim-ic.com/MAX174.related.
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
MAX174/MX574A/MX674A
Industry-Standard, Complete 12-Bit ADCs
ABSOLUTE MAXIMUM RATINGS
V
CC
to DGND ..............................................................0 to 16.5V
V
EE
to DGND ...............................................................0 to 16.5V
V
L
to DGND ......................................................................0 to 7V
DGND to AGND ...................................................................
Q1V
Control Inputs to DGND
(CE,
CS,
A0, 12/8, R/C) ........................ -0.3V to (V
CC
+ 0.3V)
Digital Output Voltage to DGND
(DB11–DB0, STS)..................................... -0.3V to (V
L
+ 0.3V)
Analog Inputs to AGND (REFIN, BIPOFF, 10V
IN
) ...........
Q16.5V
20V
IN
to AGND...................................................................
Q24V
REFOUT................................... Indefinite short to V
CC
or AGND
Power Dissipation (any package) to +75NC .................1000mW
Derates above +75NC ..............................................10mW/NC
Operating Temperature Ranges
MAX174_C, MX_74AJ/K/L...................................... 0 to +70NC
MAX174_E, MX_74AJE/KE/LE ........................ -40NC to +85NC
MAX174_M, MX_74AS/T/U............................ -55NC to +125NC
Storage Temperature Range............................ -55NC to +160NC
Lead Temperature (soldering, 10s) ................................+300NC
Soldering Temperature (reflow)
PDIP, Wide SO .............................................................+260NC
PLCC ............................................................................+245NC
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional opera-
tion 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.
ELECTRICAL CHARACTERISTICS—MAX174
(V
L
= +5V, V
EE
= +15V or +12V, V
EE
= -15V or -12V, T
A
= +25NC, unless otherwise noted.)
PARAMETER
ACCURACY
Resolution
RES
T
A
= +25°C
Integral Nonlinearity
INL
MAX174A/B
MAX174C
MAX174AC/BC
T
A
= T
MIN
to T
MAX
MAX174AE/BE/AM/BM
MAX174C
Differential Nonlinearity
Unipolar Offset Error (Note 1)
Bipolar Offset Error (Notes 2, 3)
Full-Scale Calibration Error (Note 3)
TEMPERATURE COEFFICIENTS (Using Internal Reference) (Notes 2, 3, 4)
Unipolar Offset Change
MAX174A/B
MAX174C
MAX174AC/BC
MAX174CC
Bipolar Offset Change
MAX174AE/AM
MAX174BE/BM
MAX174CE/CM
±1
±2
±1
±2
±1
±2
±4
LSB
LSB
DNL
12 bits, no missing codes over temperature
MAX174A/B
MAX174C
MAX174A
MAX174B/C
12
±1/2
±1
±1/2
±3/4
±1
±1
±1
±2
±3
±4
±0.25
LSB
LSB
LSB
%
LSB
Bits
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
Maxim Integrated Products
2
MAX174/MX574A/MX674A
Industry-Standard, Complete 12-Bit ADCs
ELECTRICAL CHARACTERISTICS—MAX174 (continued)
(V
L
= +5V, V
EE
= +15V or +12V, V
EE
= -15V or -12V, T
A
= +25NC, unless otherwise noted.)
PARAMETER
SYMBOL
MAX174AC
MAX174BC
MAX174CC
MAX174AE
Full-Scale Calibration Change
MAX174BE
MAX174CE
MAX174AM
MAX174BM
MAX174CM
INTERNAL REFERENCE
Output Voltage
Output Current (Note 5)
No load
MAX174A
MAX174B/C
9.98
9.97
10.00
10.00
10.02
10.03
2
V
mA
CONDITIONS
MIN
TYP
MAX
±2 (10)
±5 (27)
±9 (50)
±7 (19)
±10 (38)
±20 (75)
±5 (12)
±10 (25)
±20 (50)
LSB
(ppm/°C
UNITS
Available for external loads, in addition to
REFIN and BIPOFF load
ELECTRICAL CHARACTERISTICS—MX574A, MX674A
(V
L
= + 5V, V
EE
= +15V or +12V, V
EE
= -15V or -12V, T
A
= +25NC, unless otherwise noted.)
PARAMETER
ACCURACY
Resolution
RES
T
A
= +25°C
Integral Nonlinearity
INL
T
A
= T
MIN
to T
MAX
Differential Nonlinearity
Unipolar Offset Error (Note 1)
Bipolar Offset Error (Notes 2, 3)
Full-Scale Calibration Error
(Note 3)
MX574AK/L/T/U,
MX674AK/L/T/U
MX574AJ/S, MX674AJ/S
MX574AK/L/KE/LE
MX674AK/L/KE/LE
MX574AT/U, MX674AT/U
MX574AJ/S, MX674AJ/S
DNL
12 bits, no missing codes over temperature
MX574AK/L/T/U, MX674AK/L/T/U
MX574AJ/S, MX674AJ/S
MX574AL/U, MX674AL/U
MX574AJ/K/S/T, MX674AJ/K/S/T
MX574AL/U
MX574AJ/K/S/T, MX674A
MX574AK/L/T/U, MX674AK/L/T/U
MX574AJ/S, MX674AJ/S
12
±1/2
±1
±1/2
±1/2
±3/4
±1
±1
±1
±2
±3
±4
±0.125
±0.25
±1
±2
LSB
LSB
LSB
%
LSB
Bits
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
TEMPERATURE COEFFICIENTS (Using Internal Reference) (Notes 2, 3, 4)
Unipolar Offset Change
LSB
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
Maxim Integrated Products
3
MAX174/MX574A/MX674A
Industry-Standard, Complete 12-Bit ADCs
ELECTRICAL CHARACTERISTICS—MX574A, MX674A (continued)
(V
L
= + 5V, V
EE
= +15V or +12V, V
EE
= -15V or -12V, T
A
= +25NC, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MX574AK/L, MX674AK/L
MX574AJ, MX674AJ
Bipolar Offset Change
MX574AU/LE, MX674AU/LE
MX574AT/KE, MX674AT/KE
MX574AS/JE, MX674AS/JE
MX574AL, MX674AL
MX574AK, MX674AK
MX574AJ, MX674AJ
MX574ALE, MX674ALE
Full-Scale Calibration Change
MX574AKE, MX674AKE
MX574AJE, MX674AJE
MX574AU, MX674AU
MX574AT, MX674AT
MX574AS, MX674AS
INTERNAL REFERENCE
MX574AL/U
Output Voltage
No load
MX574AJ/K/S/T, MX674AL/U
MX674AJ/K/S/T
Output Current (Note 5)
Available for external loads, in addition to
REFIN and BIPOFF load
9.99
9.98
9.97
10.00
10.00
10.00
10.01
10.02
10.03
2
mA
V
MIN
TYP
MAX
±1
±2
±1
±2
±4
±2 (10)
±5 (27)
±9 (50)
±7 (19)
±10 (38)
±20 (75)
±5 (12)
±10 (25)
±20 (50)
LSB
(ppm/°C
LSB
UNITS
ELECTRICAL CHARACTERISTICS—MAX174/MX574/MX674A
(V
L
= +5V, V
CC
= +15V or +12V, V
EE
= -15V or -12V, T
A
= +25NC, unless otherwise noted.)
PARAMETER
ANALOG INPUT
Bipolar Input Range
Unipolar Input Range
Input Impedance
Using 10V input
Using 20V input
Using 10V input
Using 20V input
10V input
20V input
15V ±1.5V or
12V ±0.6V
5V ±0.5V
V
IL
V
IH
CS,
CE, R/C, A0, 12/8
CS,
CE, R/C, A0, 12/8
2.0
MAX174A/B, MX_74AK/L/TU
MAX174C, MX_74AJ/S
0
0
3
6
5
10
±1/8
±1/8
±1/8
±1/8
±5
±10
+10
+20
7
14
±1
±2
±1/2
±1/2
0.8
V
V
kW
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
POWER-SUPPLY REJECTION (Max Change in Full-Scale Calibration)
V
CC
Only
V
EE
Only
V
L
Only
LOGIC INPUTS
Input Low Voltage
Input High Voltage
V
V
LSB
LSB
LSB
15V ±1.5V or 12V ±0.6V
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
Maxim Integrated Products
4
MAX174/MX574A/MX674A
Industry-Standard, Complete 12-Bit ADCs
ELECTRICAL CHARACTERISTICS—MAX174/MX574/MX674A (continued)
(V
L
= +5V, V
CC
= +15V or +12V, V
EE
= -15V or -12V, T
A
= +25NC, unless otherwise noted.)
PARAMETER
Input Current
Input Capacitance
LOGIC OUTPUTS
Output Low Voltage
Output High Voltage
Floating State Leakage Current
Floating State Output Capacitance
CONVERSION TIME
MX574A
12-Bit Cycle
t
CONV
MX674A
MAX174
MX574A
8-Bit Cycle
POWER REQUIREMENTS
V
CC
Operating Range
V
L
Operating Range
V
EE
Operating Range
V
CC
Supply Current (Note 5)
V
L
Supply Current (Note 5)
V
EE
Supply Current (Note 5)
Power Dissipation (Note 5)
Note
Note
Note
Note
Note
1:
2:
3:
4:
5:
I
CC
I
L
I
EE
P
D
V
CC
= +15V and V
EE
= -15V
11.4
4.5
-11.4
3
3
6
150
16.5
5.5
-16.5
5
8
10
265
V
V
V
mA
mA
mA
mW
t
CONV
MX674A
MAX174
15
9
6
10
6
4
20
12
7
14
8
5
25
15
8
18
11
6
µs
µs
V
OL
V
OH
I
LKG
C
OUT
DB11–DB0, STS
DB11–DB0, STS
DB11–DB0, STS
DB11–DB0
I
SINK
= 1.6mA
I
SOURCE
= 500µA
V
OUT
= 0 to V
L
8
4
±10
0.4
V
V
µA
pF
SYMBOL
I
IN
C
IN
CONDITIONS
CS,
CE, R/C, A0, 12/8, V
IN
= 0 to V
L
CS,
CE, R/C, A0, 12/8
7
MIN
TYP
MAX
±5
UNITS
µA
pF
Adjustable to zero.
With 50ω fixed resistor from REFOUT to BIPOFF. Adjustable to zero.
With 50ω fixed resistor from REFOUT to REFIN. Adjustable to zero.
Maximum change in specification from T
A
= +25°C to T
MIN
or T
A
= +25°C to T
MAX
.
External load current should not change during a conversion. For
Q12V
supply operation, REFOUT need not be buffered
except when external load in addition to REFIN and BIPOFF inputs have to be driven.
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
Maxim Integrated Products
5
51单片机
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
