MAX1302AEUG+ Maxim Integrated, MAX1302AEUG+ Datasheet

no-image

MAX1302AEUG+

Manufacturer Part Number
MAX1302AEUG+
Description
Analog to Digital Converters - ADC 16Bit, 8Ch, 4.096V Multi-In Serial ADC
Manufacturer
Maxim Integrated
Datasheet

Specifications of MAX1302AEUG+

Rohs
yes
Number Of Channels
8/4
Architecture
SAR
Conversion Rate
115 kSPs
Resolution
16 bit
Input Type
Single-Ended/Differential
Snr
90 dB
Interface Type
SPI
Operating Supply Voltage
4.75 V to 5.25 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Package / Case
TSSOP-24
Maximum Power Dissipation
1111.1 mW
Number Of Converters
1
Voltage Reference
4.096 V
The MAX1302 multirange, low-power, 16-bit, succes-
sive-approximation, analog-to-digital converter (ADC)
operates from a single +5V supply and achieves
throughput rates up to 115ksps. A separate digital sup-
ply allows digital interfacing with a 2.7V to 5.25V system
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 MAX1302 provides eight (single-ended) or four
(true differential) analog input channels. Each analog
input channel is independently software programmable
for seven single-ended input ranges (0V to +V
-V
±V
ranges (±V
An on-chip +4.096V reference offers a small convenient
ADC solution. The MAX1302 also accepts an external
reference voltage between 3.800V and 4.136V.
The MAX1302 is available in a 24-pin TSSOP package
and is specified for operation from -40°C to +85°C.
19-6249; Rev 0; 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
REF
/2 to 0V, 0V to +V
Industrial Control Systems
Data-Acquisition Systems
Avionics
Robotics
/2, and ±V
REF
/2, ±V
________________________________________________________________ Maxim Integrated Products
REF
REF
), and three differential input
General Description
, ±2 x V
REF
8-Channel, ±V
, -V
REF
REF
).
Applications
®
-compatible serial
to 0V, ±V
REF
REF
/4,
/2,
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 ±6V Overvoltage Tolerant Inputs
o Internal or External Reference
o 115ksps Maximum Sample Rate
o Single +5V Power Supply
o 24-Pin TSSOP Package
Note: All devices are specified over the -40°C to +85°C oper-
ating temperature range.
+ Denotes a lead(Pb)-free/RoHS-compliant package.
MAX1302AEUG+
MAX1302BEUG+
REF
Channel
Inputs (MAX1302)
0V to +V
-V
±V
TOP VIEW
REF
PART
REF
Multirange Inputs,
to 0V, ±V
/2, ±V
Serial 16-Bit ADC
REF
AVDD1
SSTRB
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
DIN
CS
REF
/2, -V
10
11
12
1
2
3
4
5
6
7
8
9
REF
, and ±2 x V
Ordering Information
PIN-PACKAGE
24 TSSOP
24 TSSOP
REF
+
/4, ±V
MAX1302
TSSOP
/2 to 0V, 0V to +V
Pin Configuration
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
C H A N N EL S
REF
REF
8
8
,
1

Related parts for MAX1302AEUG+

MAX1302AEUG+ Summary of contents

Page 1

... REF o 115ksps Maximum Sample Rate ). o Single +5V Power Supply o 24-Pin TSSOP Package PART MAX1302AEUG+ Applications MAX1302BEUG+ Note: All devices are specified over the -40°C to +85°C oper- ating temperature range. + Denotes a lead(Pb)-free/RoHS-compliant package. TOP VIEW Multirange Inputs, Serial 16-Bit ADC ...

Page 2

REF Serial 16-Bit ADC 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 ...

Page 3

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

Page 4

REF Serial 16-Bit ADC ELECTRICAL CHARACTERISTICS (continued AVDD1 AVDD2 DVDD DVDDO cycle), external clock mode 4.096V (external reference operation), REFCAP = AVDD1, maximum single-ended bipolar input REF range (±V ...

Page 5

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

Page 6

REF Serial 16-Bit ADC ELECTRICAL CHARACTERISTICS (continued AVDD1 AVDD2 DVDD DVDDO cycle), external clock mode 4.096V (external reference operation), REFCAP = AVDD1, maximum single-ended bipolar input REF 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

REF Serial 16-Bit ADC ( 5V, V AVDD1 AVDD2 DVDD DVDDO cycle), external clock mode 4.096V (external reference operation), REFCAP = AVDD1, maximum single-ended bipolar input REF range (±V ...

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

REF Serial 16-Bit ADC ( 5V, V AVDD1 AVDD2 DVDD DVDDO cycle), external clock mode 4.096V (external reference operation), REFCAP = AVDD1, maximum single-ended bipolar input REF range (±V ...

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

REF Serial 16-Bit ADC PIN NAME Analog Supply Voltage 1. Connect AVDD1 to a +4.75V to +5.25V power-supply voltage. Bypass AVDD1 1 AVDD1 to AGND1 with a 0.1µF capacitor. 2 CH0 Analog Input Channel 0 3 CH1 Analog ...

Page 13

PIN NAME Analog Signal Ground 3. AGND3 is the ADC negative reference potential. Connect AGND3 to AGND1. 21 AGND3 DGND, DGNDO, AGND3, AGND2, and AGND1 must be connected together. Analog Supply Voltage 2. Connect AVDD2 to a +4.75V ...

Page 14

REF Serial 16-Bit ADC To maintain a low-noise environment, the MAX1302 provides separate power supplies for each section of circuitry. Table 1 shows the four separate power sup- plies. Achieve optimal performance using separate AVDD1, AVDD2, DVDD, and ...

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) As ...

Page 16

REF Serial 16-Bit ADC 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 ...

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

REF Serial 16-Bit ADC 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 ...

Page 19

REF + REF +V /2 REF +V /4 REF REF -V /2 REF - REF -V REF INPUT RANGE SELECTION BITS, R[2:0] EACH INPUT IS FAULT TOLERANT TO ...

Page 20

REF Serial 16-Bit ADC Table 6. Range-Select Bits DIF/SGL ...

Page 21

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

Page 22

REF Serial 16-Bit ADC FSR FFFF FFFE FFFD 8001 8000 7FFF 0003 0002 1 LSB = 0001 0000 -32,768 -32,766 - AGND1 (DIF/SGL = 0) 0V (DIF/SGL = 1) INPUT VOLTAGE (LSB [DECIMAL]) Figure 12. Ideal ...

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 SSTRB t SSCS CS ...

Page 24

REF Serial 16-Bit ADC Table 8. Mode-Control Bits M[2: External Acquisition ...

Page 25

External-acquisition-mode control byte • Internal-clock-mode control byte • Reset byte • Partial power-down-mode control byte This prevents the MAX1302 from inadvertently exiting full power-down mode because glitch in a noisy digital environment. The MAX1302 ...

Page 26

REF Serial 16-Bit ADC 4.096V SAR ADC REF MAX1302 5kΩ 4.096V BANDGAP REFERENCE Figure 18. External Reference Operation Bridge Application The MAX1302 converts 1kHz signals more accurately than a similar sigma-delta converter that might be con- sidered in ...

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

REF Serial 16-Bit ADC Unipolar Offset Error When a zero-scale analog input voltage is applied to the converter inputs, the digital output is all ones (0xFFFF). Ideally, the transition from 0xFFFF to 0xFFFE occurs at AGND1 - 0.5 ...

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

REF Serial 16-Bit ADC CH0 CH1 CH2 ANALOG CH3 INPUT MUX CH4 AND CH5 MULTIRANGE CH6 CIRCUITRY CH7 AGND1 4.096V BANDGAP REFERENCE REFCAP REF Chip Information PROCESS: BiCMOS 30 ______________________________________________________________________________________ Multirange Inputs, CONTROL LOGIC AND REGISTERS AVDD2 CLOCK ...

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 ...

Related keywords