MAX1034BEUG+ Maxim Integrated, MAX1034BEUG+ Datasheet

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MAX1034BEUG+

Manufacturer Part Number
MAX1034BEUG+
Description
Analog to Digital Converters - ADC 8-/4-Channel, Multirange Inputs,
Manufacturer
Maxim Integrated
Datasheet

Specifications of MAX1034BEUG+

Rohs
yes
Number Of Channels
8/4
Architecture
SAR
Conversion Rate
115 kSPs
Resolution
14 bit
Input Type
Single-Ended/Differential
Snr
84.5 dB
Interface Type
3-Wire, QSPI, SPI
Operating Supply Voltage
2.7 V to 5.25 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Package / Case
TSSOP-24
Maximum Power Dissipation
1111.1 mW
Minimum Operating Temperature
- 40 C
Number Of Converters
1
Voltage Reference
4.136 V
The MAX1034/MAX1035 multirange, low-power, 14-bit,
successive-approximation, analog-to-digital converters
(ADCs) operate from a single +5V supply and achieve
throughput rates up to 115ksps. A separate digital sup-
ply allows digital interfacing with 2.7V to 5.25V systems
using the SPI-/QSPI™-/MICROWIRE
interface. Partial power-down mode reduces the supply
current to 1.3mA (typ). Full power-down mode reduces
the power-supply current to 1µA (typ).
The MAX1034 provides eight (single-ended) or four (true
differential) analog input channels. The MAX1035 pro-
vides four (single-ended) or two (true differential) analog
input channels. Each analog input channel is indepen-
dently software programmable for seven single-ended
input ranges (0V to +V
-V
differential input ranges (±V
An on-chip +4.096V reference offers a small convenient
ADC solution. The MAX1034/MAX1035 also accept an
external reference voltage between 3.800V and 4.136V.
The MAX1034 is available in a 24-pin TSSOP package
and the MAX1035 is available in a 20-pin TSSOP pack-
age. Each device is specified for operation from -40°C
to +85°C.
19-3574; Rev 2; 3/12
QSPI is a trademark of Motorola, Inc.
MICROWIRE is a registered trademark of National
Semiconductor Corp.
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.
REF
to 0V, ±V
Industrial Control Systems
Data-Acquisition Systems
Avionics
Robotics
REF
________________________________________________________________ Maxim Integrated Products
/4, ±V
REF
8-/4-Channel, ±V
General Description
/2, -V
REF
REF
/2, and ±V
/2, ±V
REF
/2 to 0V, 0V to +V
Applications
®
REF
-compatible serial
, ±2 x V
REF
), and three
REF
).
REF
,
o Software-Programmable Input Range for Each
o Single-Ended Input Ranges
o Differential Input Ranges
o Eight Single-Ended or Four Differential Analog
o Four Single-Ended or Two Differential Analog
o ±6V Overvoltage Tolerant Inputs
o Internal or External Reference
o 115ksps Maximum Sample Rate
o Single +5V Power Supply
o 20-/24-Pin TSSOP Package
Note: All devices are specified over the -40°C to +85°C opera-
ting temperature range.
+ Denotes a lead(Pb)-free/RoHS-compliant package.
MAX1034EUG+
MAX1035EUP+
Pin Configurations continued at end of data sheet.
REF
Channel
Inputs (MAX1034)
Inputs (MAX1035)
0V to +V
-V
±V
TOP VIEW
REF
PART
REF
Serial 14-Bit ADCs
Multirange Inputs,
to 0V, ±V
/2, ±V
REF
AVDD1
SSTRB
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
DIN
REF
CS
/2, -V
10
11
12
PIN-PACKAGE
24 TSSOP
20 TSSOP
1
2
3
4
5
6
7
8
9
REF
, and ±2 x V
Ordering Information
REF
+
MAX1034
/4, ±V
TSSOP
Pin Configurations
/2 to 0V, 0V to +V
REF
REF
/2, and ±V
24
23
22
21
20
19
18
17
16
15
14
13
AGND1
AGND2
AVDD2
AGND3
REF
REFCAP
DVDD
DVDDO
DGND
DGNDO
DOUT
SCLK
Features
CHANNELS
REF
REF
8
4
,
1

Related parts for MAX1034BEUG+

MAX1034BEUG+ Summary of contents

Page 1

... Avionics Robotics QSPI is a trademark of Motorola, Inc. MICROWIRE is a registered trademark of National Semiconductor Corp. ________________________________________________________________ Maxim Integrated Products 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. REF o Software-Programmable Input Range for Each ...

Page 2

Serial 14-Bit ADCs ABSOLUTE MAXIMUM RATINGS AVDD1 to AGND1 ....................................................-0.3V to +6V AVDD2 to AGND2 ....................................................-0.3V to +6V DVDD to DGND ........................................................-0.3V to +6V DVDDO to DGNDO ..................................................-0.3V to +6V DVDD to DVDDO......................................................-0.3V to +6V DVDD, DVDDO to ...

Page 3

ELECTRICAL CHARACTERISTICS (continued 5V, V AVDD1 AVDD2 DVDD DVDDO external clock mode 4.096V (external reference operation), REFCAP = AVDD1, maximum single-ended bipolar input range (±V REF C = ...

Page 4

Serial 14-Bit ADCs ELECTRICAL CHARACTERISTICS (continued 5V, V AVDD1 AVDD2 DVDD DVDDO external clock mode 4.096V (external reference operation), REFCAP = AVDD1, maximum single-ended bipolar input range (±V ...

Page 5

ELECTRICAL CHARACTERISTICS (continued 5V, V AVDD1 AVDD2 DVDD DVDDO external clock mode 4.096V (external reference operation), REFCAP = AVDD1, maximum single-ended bipolar input range (±V REF C = ...

Page 6

Serial 14-Bit ADCs ELECTRICAL CHARACTERISTICS (continued 5V, V AVDD1 AVDD2 DVDD DVDDO external clock mode 4.096V (external reference operation), REFCAP = AVDD1, maximum single-ended bipolar input range (±V ...

Page 7

AVDD1 AVDD2 DVDD DVDDO cycle), external clock mode 4.096V (external reference operation), REFCAP = AVDD1, maximum single-ended bipolar input REF range (± 50pF, C REF DOUT ...

Page 8

Serial 14-Bit ADCs ( AVDD1 AVDD2 DVDD DVDDO cycle), external clock mode 4.096V (external reference operation), REFCAP = AVDD1, maximum single-ended bipolar input REF range (± 50pF, ...

Page 9

AVDD1 AVDD2 DVDD DVDDO cycle), external clock mode 4.096V (external reference operation), REFCAP = AVDD1, maximum single-ended bipolar input REF range (± 50pF, C REF DOUT ...

Page 10

Serial 14-Bit ADCs ( AVDD1 AVDD2 DVDD DVDDO cycle), external clock mode 4.096V (external reference operation), REFCAP = AVDD1, maximum single-ended bipolar input REF range (± 50pF, ...

Page 11

AVDD1 AVDD2 DVDD DVDDO cycle), external clock mode 4.096V (external reference operation), REFCAP = AVDD1, maximum single-ended bipolar input REF range (± 50pF, C REF DOUT ...

Page 12

Serial 14-Bit ADCs PIN NAME MAX1034 MAX1035 Analog Supply Voltage 1. Connect AVDD1 to a +4.75V to +5.25V power-supply voltage AVDD1 Bypass AVDD1 to AGND1 with a 0.1µF capacitor CH0 Analog Input Channel 0 ...

Page 13

PIN NAME MAX1034 MAX1035 21 18 AGND3 22 19 AVDD2 23 20 AGND2 24 1 AGND1 4–20mA ACCELERATION PRESSURE TEMPERATURE WHEATESTONE WHEATESTONE 1µF Figure 1. Typical Application Circuit Detailed Description The MAX1034/MAX1035 multirange, low-power, 14-bit successive-approximation ADCs operate ...

Page 14

Serial 14-Bit ADCs The MAX1034 has eight single-ended analog input channels or four differential channels (see the Block Diagram at the end of the data sheet). The MAX1035 has four single-ended analog input channels or two dif- ferential ...

Page 15

CS SCLK BYTE 1 SSTRB DIN ANALOG INPUT TRACK AND HOLD* HOLD HIGH DOUT IMPEDANCE *TRACK AND HOLD TIMING IS CONTROLLED BY SCLK. Figure 2. External Clock-Mode Conversion (Mode 0) Analog ...

Page 16

Serial 14-Bit ADCs CS SSTRB SCLK BYTE 1 DIN DOUT t ANALOG INPUT TRACK AND HOLD* HOLD TRACK INTCLK** *TRACK AND HOLD TIMING IS CONTROLLED BY SCLK. **INTCLK IS AN ...

Page 17

CS SSTRB SCLK BYTE 1 DIN DOUT ANALOG INPUT TRACK AND HOLD* HOLD INTCLK** *TRACK AND HOLD TIMING IS CONTROLLED BY INTCLK, AND IS NOT ACCESSIBLE TO THE USER. **INTCLK ...

Page 18

Serial 14-Bit ADCs Table 3. Input Data Word Formats OPERATION Conversion-Start Byte (Tables 4 and 5) Analog-Input Configuration Byte (Table 2) Mode-Control Byte (Table 7) Table 4. Channel Selection in Single-Ended Mode (DIF/SGL = 0) CHANNEL-SELECT BIT C2 ...

Page 19

REF +3/4 V REF +V /2 REF +V /4 REF REF -V /2 REF -3/4 V REF -V REF INPUT RANGE SELECTION BITS, R[2:0] EACH INPUT IS FAULT TOLERANT TO ±6V. Figure 7. Single-Ended ...

Page 20

Serial 14-Bit ADCs Table 6. Range-Select Bits DIF/SGL ...

Page 21

INPUT COMMON-MODE VOLTAGE RANGE vs. OUTPUT VOLTAGE (FSR = INPUT VOLTAGE (V) Figure 9. Common-Mode Voltage vs. Input Voltage (FSR = V INPUT COMMON-MODE ...

Page 22

Serial 14-Bit ADCs FSR 3FFF 3FFE 3FFD 2001 2000 1FFF 0003 0002 1 LSB = 0001 0000 -8,192 -8,190 - AGND1 (DIF/SGL = 0) 0V (DIF/SGL = 1) INPUT VOLTAGE (LSB [DECIMAL]) Figure 12. Ideal Bipolar ...

Page 23

CSS SCLK DIN START SEL2 SEL1 SEL0 ANALOG INPUT CONFIGURATION BYTE t DV HIGH DOUT IMPEDANCE Figure 15. Analog Input Configuration Byte and Mode-Control Byte Timing • User supplies one ...

Page 24

Serial 14-Bit ADCs Table 8. Mode-Control Bits M[2: For the external ...

Page 25

Internal-Clock-Mode Control Byte • Reset Byte • Partial Power-Down-Mode-Control Byte This prevents the MAX1034/MAX1035 from inadvertent- ly exiting full power-down mode because glitch in a noisy digital environment. The MAX1034/MAX1035 power up in normal ...

Page 26

Serial 14-Bit ADCs 4.096V SAR ADC REF MAX1034 MAX1035 5kΩ 4.096V BANDGAP REFERENCE Figure 18. External Reference Operation Bridge Application The MAX1034/MAX1035 convert 1kHz signals more accurately than a similar sigma-delta converter that might be considered in bridge ...

Page 27

INPUT 200Ω 4–20mA INPUT 200Ω Figure 19. 4–20mA Application BRIDGE Figure 20. Bridge Application Differential Nonlinearity (DNL) DNL is the difference between an actual step width and the ideal value of 1 LSB. A DNL error specification ...

Page 28

Serial 14-Bit ADCs Unipolar Offset Error When a zero-scale analog input voltage is applied to the converter inputs, the digital output is all ones (0x3FFF). Ideally, the transition from 0x3FFF to 0x3FFE occurs at AGND1 - 0.5 LSB. ...

Page 29

Effective Number of Bits (ENOB) ENOB indicates the global accuracy of an ADC at a specific input frequency and sampling rate. With an input range equal to the ADC’s full-scale range, calcu- late the ENOB as follows: ⎛ ...

Page 30

Serial 14-Bit ADCs CH0 CH1 ANALOG CH2 CH3 INPUT MUX CH4 AND CH5 MULTIRANGE CH6 CIRCUITRY CH7 AGND1 4.096V BANDGAP REFERENCE REFCAP REF Pin Configurations (continued) TOP VIEW + AGND1 1 AVDD1 2 CH0 3 CH1 4 MAX1035 ...

Page 31

... Maxim reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. 31 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2012 Maxim Integrated Products ...

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