MAX1303BEUP+ Maxim Integrated Products, MAX1303BEUP+ Datasheet - Page 22

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

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 contain one byte-wide mode-
control register. The timing diagram of Figure 15 shows
how to use the mode-control byte, and the mode-con-
trol byte format is shown in Table 7. The mode-control
byte is used to select the conversion method and to
control the power modes of the MAX1302/MAX1303.
8-/4-Channel, ±V
Serial 16-Bit ADCs
Figure 12. Ideal Bipolar Transfer Function, Single-Ended or
Differential Input
Figure 14. Ideal Unipolar Transfer Function, Single-Ended
Input, 0 to +FSR
22
______________________________________________________________________________________
FFFD
FFFD
FFFF
FFFE
8001
8000
7FFF
0003
0002
0001
0000
FFFF
FFFE
8001
8000
7FFF
0003
0002
0001
0000
(AGND1)
-32,768 -32,766
0
1
2
3
INPUT VOLTAGE (LSB [DECIMAL])
INPUT VOLTAGE (LSB [DECIMAL])
AGND1 (DIF/SGL = 0)
0V (DIF/SGL = 1)
-1
32,768
FSR
FSR
0
+1
1 LSB =
1 LSB =
65,536 x 4.096V
65,536 x 4.096V
FSR x V
FSR x V
Mode Control
REF
+32,765 +32,767
65,533 65,535
REF
REF
Multirange Inputs,
The conversion method is selected using the mode-con-
trol byte (see the Mode Control section), and the conver-
sion is initiated using a conversion start command (Table
3, and Figures 2, 3, and 4).The MAX1302/MAX1303 con-
vert analog signals to digital data using one of three
methods:
•
•
•
Figure 13. Ideal Unipolar Transfer Function, Single-Ended
Input, -FSR to 0
External Clock Mode, Mode 0 (Figure 2)
• Highest maximum throughput (see the Electrical
• User controls the sample instant
• CS remains low during the conversion
• User supplies SCLK throughout the ADC con-
External Acquisition Mode, Mode 1 (Figure 3)
• Lowest maximum throughput (see the Electrical
• User controls the sample instant
• User supplies two bytes of SCLK, then drives
• After SSTRB transitions high, the user supplies
Internal Clock Mode, Mode 2 (Figure 4)
• High maximum throughput (see the Electrical
• The internal clock controls the sampling instant
Characteristics table)
version and reads data at DOUT
Characteristics table)
CS high to relieve processor load while the
ADC converts
two bytes of SCLK and reads data at DOUT
Characteristics table)
FFFD
FFFF
FFFE
8001
8000
7FFF
0003
0002
0001
0000
0
1
2
Selecting the Conversion Method
3
INPUT VOLTAGE (LSB [DECIMAL])
32,768
FSR
1 LSB =
65,536 x 4.096V
FSR x V
65,533 65,535
REF
(AGND1)