MAX1303BEUP+ Maxim Integrated Products, MAX1303BEUP+ Datasheet - Page 16

• 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

Figure 8 illustrates the software-selectable differential
analog input voltage range that produces a valid digital
output. Each analog input differential pair can be inde-
pendently programmed to one of three differential input
ranges by setting the R[2:0] control bits with DIF/SGL = 1.
Regardless of the specified input voltage range and
whether the channel is selected, each analog input is
±6V fault tolerant. The analog input fault protection is
active whether the device is unpowered or powered.
8-/4-Channel, ±V
Serial 16-Bit ADCs
Figure 3. External Acquisition-Mode Conversion (Mode 1)
16
INTCLK**
SSTRB
TRACK AND HOLD*
SCLK
DOUT
______________________________________________________________________________________
DIN
CS
ANALOG INPUT
*TRACK AND HOLD TIMING IS CONTROLLED BY SCLK.
**INTCLK IS AN INTERNAL SIGNAL AND IS NOT ACCESSIBLE TO THE USER.
S
HOLD
C2
C1
C0
0
BYTE 1
0
0
0
TRACK
t
ACQ
REF
BYTE 2
Multirange Inputs,
SAMPLING INSTANT
f
100ns to 400ns
SAMPLE
f
INTCLK
≈ f
SCLK
≈ 4.5MHz
Any voltage beyond FSR, but within the ±6V fault-toler-
ant range, applied to an analog input results in a full-
scale output voltage for that channel.
Clamping diodes with breakdown thresholds in excess
of 6V protect the MAX1302/MAX1303 analog inputs
during ESD and other transient events (Figure 6). The
clamping diodes do not conduct during normal device
operation, nor do they limit the current during such
transients. When operating in an environment with the
potential for high-energy voltage and/or current tran-
sients, protect the MAX1302/MAX1303 externally.
/ 32 + f
HIGH IMPEDANCE
INTCLK
/ 17
B15
B14
B13
HOLD
B12
BYTE 3
B11
B10
B9
B8
B7
B6
B5
B4
BYTE 4
B3
B2
B1
B0