MAX174_11 Datasheet, PDF (1/18 Pages) Maxim Integrated Products – Industry-Standard, Complete 12-Bit ADCs

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
10
2R
REFIN
9
AGND
VL DGND
VCC
1
15
7
VEE BIPOFF
11
12
10VIN 20VIN
13 14
R
5kI
12-BIT
DAC
9.950kI
5kI
12
8
REFOUT
+10V
REF
MAX174
MX574A
MX674A
SAR
4
LOW
NIBBLE
4
MIDDLE
NIBBLE
4
HIGH
NIBBLE
16
19 20
23 24
27
D0
D3 D4
D7 D8
D11
CLOCK
AND
CONTROL
LOGIC
28 6 5
STS CE R/C
2 _12/8
3
CS
4
A0
For related parts and recommended products to use with this part, refer to www.maxim-ic.com/MAX174.related.
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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.