MAX1303BEUP+ Maxim Integrated Products, MAX1303BEUP+ Datasheet

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MAX1303BEUP+

Manufacturer Part Number
MAX1303BEUP+
Description
ADC Single SAR 115KSPS 16-Bit Serial 20-Pin TSSOP
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX1303BEUP+

Package
20TSSOP
Resolution
16 Bit
Sampling Rate
115 KSPS
Architecture
SAR
Number Of Adcs
1
Number Of Analog Inputs
4|2
Digital Interface Type
Serial (SPI, QSPI, Microwire)
Input Type
Voltage
Signal To Noise Ratio
90(Typ) dB
Polarity Of Input Voltage
Unipolar|Bipolar
The MAX1302/MAX1303 multirange, low-power, 16-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™-compatible
serial 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. The MAX1303
provides four (single-ended) or two (true differential)
analog input channels. Each analog input channel is
independently software programmable for seven
single-ended input ranges (0 to +V
0 to +V
and three differential input ranges (±V
±2 x V
An on-chip +4.096V reference offers a small convenient
ADC solution. The MAX1302/MAX1303 also accept an
external reference voltage between 3.800V and 4.136V.
The MAX1302 is available in a 24-pin TSSOP package
and the MAX1303 is available in a 20-pin TSSOP pack-
age. Each device is specified for operation from -40°C
to +85°C.
19-3576; Rev 1; 12/06
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
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.
REF
Industrial Control Systems
Data-Acquisition Systems
Avionics
Robotics
REF
).
, -V
REF
________________________________________________________________ Maxim Integrated Products
to 0, ±V
8-/4-Channel, ±V
General Description
REF
/4, ±V
Applications
REF
REF
/2, -V
/2, and ±V
REF
REF
/2, ±V
/2 to 0,
REF
REF
),
,
♦ Software-Programmable Input Range for Each
♦ Single-Ended Input Ranges
♦ Differential Input Ranges
♦ Eight Single-Ended or Four Differential Analog
♦ Four Single-Ended or Two Differential Analog
♦ ±6V Overvoltage Tolerant Inputs
♦ Internal or External Reference
♦ 115ksps Maximum Sample Rate
♦ Single +5V Power Supply
♦ 20-/24-Pin TSSOP Package
*Future product—contact factory for availability.
Note: All devices are specified over the -40°C to +85°C oper-
ating temperature range.
MAX1302AEUG*
MAX1302BEUG*
MAX1303AEUP*
MAX1303BEUP
Pin Configurations continued at end of data sheet.
REF
Channel
Inputs (MAX1302)
Inputs (MAX1303)
0 to +V
to 0, ±V
±V
PART
TOP VIEW
REF
Serial 16-Bit ADCs
Multirange Inputs,
/2, ±V
REF
REF
SSTRB
AV
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
/2, -V
DD1
DIN
/4, ±V
CS
REF
PIN-
PACKAGE
24 TSSOP
24 TSSOP
20 TSSOP
20 TSSOP
10
11
12
1
2
3
4
5
6
7
8
9
, and ±2 x V
REF
Ordering Information
REF
MAX1302
TSSOP
/2 to 0, 0 to +V
Pin Configurations
/2, and ±V
C H A N N EL S
24
23
22
21
20
19
18
17
16
15
14
13
REF
AGND1
AGND2
AV
AGND3
REF
REFCAP
DV
DV
DGND
DGNDO
DOUT
SCLK
8
8
4
4
REF
DD2
DD
DDO
REF
Features
, -V
PKG CODE
U24-1
U24-1
U20-2
U20-2
REF
1

Related parts for MAX1303BEUP+

MAX1303BEUP+ Summary of contents

Page 1

... Avionics Robotics SPI and QSPI are trademarks of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corp. ________________________________________________________________ Maxim Integrated Products 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. REF ♦ Software-Programmable Input Range for Each Channel ♦ ...

Page 2

Serial 16-Bit ADCs ABSOLUTE MAXIMUM RATINGS AV DD1 to AGND1 ....................................................-0.3V to +6V AV DD2 to AGND2 ....................................................-0. DGND ........................................................-0.3V to +6V DV DDO to DGNDO ..................................................-0. ...

Page 3

ELECTRICAL CHARACTERISTICS (continued) ( 5V, AGND1 = DGND = DGNDO = AGND2 = AGND3 = 0, f DD1 DD2 DD DDO external clock mode 4.096V (external reference operation), REFCAP ...

Page 4

Serial 16-Bit ADCs ELECTRICAL CHARACTERISTICS (continued) ( 5V, AGND1 = DGND = DGNDO = AGND2 = AGND3 = 0, f DD1 DD2 DD DDO external clock mode 4.096V (external ...

Page 5

ELECTRICAL CHARACTERISTICS (continued) ( 5V, AGND1 = DGND = DGNDO = AGND2 = AGND3 = 0, f DD1 DD2 DD DDO external clock mode 4.096V (external reference operation), REFCAP ...

Page 6

Serial 16-Bit ADCs ELECTRICAL CHARACTERISTICS (continued) ( 5V, AGND1 = DGND = DGNDO = AGND2 = AGND3 = 0, f DD1 DD2 DD DDO external clock mode 4.096V (external ...

Page 7

5V, AGND1 = DGND = DGNDO = AGND2 = AGND3 = 0, f DD1 DD2 DD DDO external clock mode 4.096V (external reference operation), REFCAP = AV REF ...

Page 8

Serial 16-Bit ADCs ( 5V, AGND1 = DGND = DGNDO = AGND2 = AGND3 = 0, f DD1 DD2 DD DDO external clock mode 4.096V (external reference operation), REFCAP ...

Page 9

5V, AGND1 = DGND = DGNDO = AGND2 = AGND3 = 0, f DD1 DD2 DD DDO external clock mode 4.096V (external reference operation), REFCAP = AV REF ...

Page 10

Serial 16-Bit ADCs ( 5V, AGND1 = DGND = DGNDO = AGND2 = AGND3 = 0, f DD1 DD2 DD DDO external clock mode 4.096V (external reference operation), REFCAP ...

Page 11

5V, AGND1 = DGND = DGNDO = AGND2 = AGND3 = 0, f DD1 DD2 DD DDO external clock mode 4.096V (external reference operation), REFCAP = AV REF ...

Page 12

Serial 16-Bit ADCs PIN NAME MAX1302 MAX1303 Analog Supply Voltage 1. Connect DD1 AV DD1 2 3 CH0 Analog Input Channel CH1 Analog Input Channel CH2 Analog Input ...

Page 13

PIN NAME MAX1300 MAX1301 Analog Signal Ground 3. AGND3 is the ADC negative reference potential. Connect AGND3 AGND3 AGND1. DGND, DGNDO, AGND3, AGND2, and AGND1 must be connected together. Analog Supply Voltage 2. Connect AV ...

Page 14

Serial 16-Bit ADCs To maintain a low-noise environment, the MAX1302 and MAX1303 provide separate power supplies for each section of circuitry. Table 1 shows the four separate power supplies. Achieve optimal performance using separate ...

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

Serial 16-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 16-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 CHANNEL-SELECT BIT CH0 ...

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

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

Page 21

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

Page 22

Serial 16-Bit ADCs 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 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 SSTRB t SSCS CS ...

Page 24

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

Page 25

External-acquisition-mode control byte • Internal-clock-mode control byte • Reset byte • Partial power-down-mode control byte This prevents the MAX1302/MAX1303 from inadvertent- ly exiting full power-down mode because glitch in a noisy digital environment. The ...

Page 26

Serial 16-Bit ADCs SAR ADC REF MAX1302 MAX1303 5kΩ 4.096V BANDGAP REFERENCE Figure 18. External Reference Operation Bridge Application The MAX1302/MAX1303 convert 1kHz signals more accurately than a similar sigma-delta converter that might be considered in bridge applications. ...

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 16-Bit ADCs 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 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 16-Bit ADCs CH0 CH1 CH2 ANALOG CH3 INPUT MUX CH4 AND CH5 MULTIRANGE CH6 CIRCUITRY CH7 AGND1 REFCAP REF Pin Configurations (continued) TOP VIEW AGND1 DD1 CH0 3 18 CH1 4 17 ...

Page 31

... 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 ____________________ 31 © 2006 Maxim Integrated Products ...

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