MAX1157BEUI+T Maxim Integrated, MAX1157BEUI+T Datasheet

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MAX1157BEUI+T

Manufacturer Part Number
MAX1157BEUI+T
Description
Analog to Digital Converters - ADC 14-Bit 135ksps 4.2V Precision ADC
Manufacturer
Maxim Integrated
Datasheet

Specifications of MAX1157BEUI+T

Rohs
yes
Number Of Channels
1
Architecture
SAR
Conversion Rate
135 KSPs
Resolution
14 bit
Input Type
Single-Ended
Snr
85 dB
Interface Type
Parallel
Operating Supply Voltage
4.75 V to 5.25 V
Maximum Operating Temperature
+ 85 C
Package / Case
TSSOP-28
Maximum Power Dissipation
1026 mW
Minimum Operating Temperature
- 40 C
Number Of Converters
1
Voltage Reference
4.096 V
The MAX1157/MAX1159/MAX1175 14-bit, low-power,
successive-approximation analog-to-digital converters
(ADCs) feature automatic power-down, a factory-trimmed
internal clock, and a 14-bit wide parallel interface. The
devices operate from a single +4.75V to +5.25V analog
supply and feature a separate digital supply input for
direct interface with +2.7V to +5.25V digital logic.
The MAX1157 accepts an analog input voltage range
from 0 to +10V while the MAX1159 accepts a bipolar
analog input voltage range of ±10V. The MAX1175
accepts a bipolar analog input voltage range of ±5V.
All devices consume only 23mW at a sampling rate
of 135ksps when using an external reference and
29mW when using the internal +4.096V reference.
AutoShutdown™ reduces supply current to 0.4mA at
10ksps. The MAX1157/MAX1159/MAX1175 are ideal for
high-performance, battery-powered data-acquisition
applications. Excellent AC performance (THD = -100dB)
and DC accuracy (±1LSB INL) make the MAX1157/
MAX1159/MAX1175 ideal for industrial process control,
instrumentation, and medical applications.
The MAX1157/MAX1159/MAX1175 are available in a
28-pin TSSOP package and are fully specified over the
-40°C to +85°C extended temperature range and the
0°C to +70°C commercial temperature range.
19-2653; Rev 1; 1/03
AutoShutdown is a trademark of Maxim Integrated Products, Inc.
Ordering Information continued at end of data sheet.
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.
MAX1157ACUI
MAX1157BCUI
Temperature Sensing and Monitoring
Industrial Process Control
I/O Modules
Data-Acquisition Systems
Precision Instrumentation
PART
14-Bit, 135ksps, Single-Supply ADCs with
________________________________________________________________ Maxim Integrated Products
General Description
TEMP RANGE
0°C to +70°C
0°C to +70°C
Applications
Bipolar Analog Input Range
PIN-PACKAGE
28 TSSOP
28 TSSOP
o Analog Input Voltage Range ±10V, ±5V, or 0 to 10V
o 14-Bit Wide Parallel Interface
o Single +4.75V to +5.25V Analog Supply Voltage
o Interfaces with +2.7V to +5.25V Digital Logic
o ±1LSB INL (max)
o ±1LSB DNL (max)
o Low Supply Current (MAX1159)
o Small Footprint
TOP VIEW
5.3mA (External Reference)
6.2mA (Internal Reference)
5µA AutoShutdown Mode
28-Pin TSSOP Package
INPUT VOLTAGE
AGND
AGND
AV
EOC
D10
D11
D12
D13
R/C
AIN
D6
D7
D8
D9
DD
0 to +10V
0 to +10V
RANGE
10
11
12
13
14
1
2
3
4
5
6
7
8
9
Ordering Information
MAX1157
MAX1159
MAX1175
TSSOP
Pin Configuration
28
27
26
25
24
23
22
21
20
19
18
17
16
15
D5
D4
D3
D2
D1
D0
N.C.
N.C.
DV
DGND
CS
RESET
REF
REFADJ
DD
INL (LSB)
Features
±1
±2
1

Related parts for MAX1157BEUI+T

MAX1157BEUI+T Summary of contents

Page 1

... Temperature Sensing and Monitoring Industrial Process Control I/O Modules Data-Acquisition Systems Precision Instrumentation AutoShutdown is a trademark of Maxim Integrated Products, Inc. PART TEMP RANGE MAX1157ACUI 0°C to +70°C MAX1157BCUI 0°C to +70°C Ordering Information continued at end of data sheet ...

Page 2

Single-Supply ADCs with Bipolar Analog Input Range ABSOLUTE MAXIMUM RATINGS AV to AGND .........................................................-0. DGND.........................................................-0.3V to +6V DD AGND to DGND.....................................................-0.3V to +0.3V AIN to AGND .....................................................-16.5V to +16.5V REF, REFADJ to AGND............................-0.3V ...

Page 3

Single-Supply ADCs with ELECTRICAL CHARACTERISTICS (continued) ( +5V ±5%, external reference = +4.096V unless otherwise noted. Typical values are at T PARAMETER SYMBOL Input Current Input Current Step at Power-Up Input Capacitance ...

Page 4

Single-Supply ADCs with Bipolar Analog Input Range ELECTRICAL CHARACTERISTICS (continued) ( +5V ±5%, external reference = +4.096V unless otherwise noted. Typical values are at T PARAMETER SYMBOL POWER SUPPLIES Analog Supply Voltage ...

Page 5

Single-Supply ADCs with ( +5V, external reference = +4.096V unless otherwise noted. Typical values are at T MAX INL vs. CODE 2.5 2.0 1.5 1.0 0.5 0 -0.5 -1.0 -1.5 ...

Page 6

Single-Supply ADCs with Bipolar Analog Input Range ( +5V, external reference = +4.096V unless otherwise noted. Typical values are at T MAX SINAD vs. FREQUENCY 100 ...

Page 7

Single-Supply ADCs with PIN NAME Reference Buffer Output. Bypass REFADJ with a 0.1µF capacitor to AGND for internal reference 15 REFADJ mode. Connect REFADJ to AV Reference Input/Output. Bypass REF with a 10µF capacitor to AGND. REF is ...

Page 8

Single-Supply ADCs with Bipolar Analog Input Range CS R/C EOC HIGH-Z D0–D13 Figure 2. MAX1157/MAX1159/MAX1175 Timing Diagram +5V ANALOG +5V DIGITAL 0.1µF µP DATA AV DV BUS DD DD ANALOG D0–D13 AIN INPUT MAX1157 MAX1159 R/C EOC MAX1175 ...

Page 9

Single-Supply ADCs with MAX1157 3.4kΩ R2 161Ω TRACK AIN R3 Figure 4. Equivalent Input Circuit EOC Figure 5. Selecting Standby Mode powers down the reference and reference buffer after completing a conversion. The reference and reference buffer require ...

Page 10

Single-Supply ADCs with Bipolar Analog Input Range R/C EOC Figure 6. Selecting Shutdown Mode +5V 68kΩ 100kΩ REFADJ 0.1µF 150kΩ Figure 7. MAX1157/MAX1159/MAX1175 Reference Adjust Circuit In shutdown mode, the reference and reference buffer shut down between conversions. ...

Page 11

Single-Supply ADCs with INPUT RANGE = 0 TO +10V OUTPUT CODE FULL-SCALE 111 TRANSITION 110 101 011 010 ...

Page 12

Single-Supply ADCs with Bipolar Analog Input Range MAX1157 MAX1159 MAX1175 MAX427 AIN ANALOG INPUT *MAX1157 ONLY. **MAX1159/MAX1175 ONLY. Figure 11. MAX1157/MAX1159/MAX1175 Fast-Settling Input Buffer onto the analog lines. If the analog and digital sections share the same supply, ...

Page 13

Single-Supply ADCs with In reality, there are other noise sources besides quanti- zation noise: thermal noise, reference noise, clock jitter, etc. SNR is computed by taking the ratio of the RMS signal to the RMS noise, which includes ...

Page 14

Single-Supply ADCs with Bipolar Analog Input Range REF AIN AGND RESET CS R/C 14 ______________________________________________________________________________________ REFADJ AV DD 5kΩ REFERENCE 14 BITS OUTPUT REGISTERS CAPACITIVE INPUT DAC SCALER SUCCESSIVE- APPROXIMATION CLOCK REGISTER AND CONTROL LOGIC Functional Diagram AGND ...

Page 15

... 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 ____________________ 15 © 2003 Maxim Integrated Products ...

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