MAX1302AEUG+T Maxim Integrated, MAX1302AEUG+T Datasheet - Page 13

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

Specifications of MAX1302AEUG+T

• 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 successive-
approximation ADC operates from a single +5V supply
and has a separate digital supply allowing digital inter-
face with 2.7V to 5.25V systems. This 16-bit ADC has
internal track-and-hold (T/H) circuitry that supports single-
ended and fully differential inputs. For single-ended con-
versions, the valid analog input voltage range spans from
-V
mum allowable differential input voltage spans from -2 x
V
software-programmable channel and data-acquisition
Figure 1. Typical Application Circuit
REF
REF
PIN
21
22
23
24
to +2 x V
below ground to +V
REF
AGND3
AGND2
AGND1
AVDD2
NAME
. Data can be converted in a variety of
______________________________________________________________________________________
Detailed Description
Analog Signal Ground 3. AGND3 is the ADC negative reference potential. Connect AGND3 to AGND1.
DGND, DGNDO, AGND3, AGND2, and AGND1 must be connected together.
Analog Supply Voltage 2. Connect AVDD2 to a +4.75V to +5.25V power-supply voltage. Bypass AVDD2
to AGND2 with a 0.1µF capacitor.
Analog Ground 2. This ground carries approximately five times more current than AGND1. DGND,
DGNDO, AGND3, AGND2, and AGND1 must be connected together.
Analog Ground 1. DGND, DGNDO, AGND3, AGND2, and AGND1 must be connected together.
REF
8-Channel, ±V
1µF
above ground. The maxi-
ACCELERATION
WHEATESTONE
WHEATESTONE
TEMPERATURE
PRESSURE
4–20mA
PLC
0.1µF
0.1µF
CHO
CH1
CH2
CH3
CH4
CH5
CH6
CH7
REF
AGND1
REFCAP
AVDD2
AGND2
5.0V
0.1µF
AGND3
MAX1302
AVDD1
5.0V
DGND
configurations. Microprocessor (µP) control is made easy
through an SPI-/QSPI-/MICROWIRE-compatible serial
interface.
The MAX1302 has eight single-ended analog input
channels or four differential channels (see the Block
Diagram ). Each analog input channel is independently
software programmable for seven single-ended input
ranges (0V to +V
to 0V, ±V
input ranges (±V
Additionally, all analog input channels are fault tolerant to
±6V. A fault condition on an idle channel does not affect
the conversion result of other channels.
REF
DGNDO
DVDD
DVDD0
5.0V
SSTRB
DOUT
SCLK
FUNCTION
DIN
CS
0.1µF
REF
Multirange Inputs,
Pin Description (continued)
/4, ±V
0.1µF
3.3V
Serial 16-Bit ADC
REF
V
SCK
I/O
MOSI
I/O
MISO
DD
MC68HCXX
REF
REF
/2, -V
V
µC
SS
/2, and ±V
/2, ±V
REF
/2 to 0V, 0V to +V
REF
REF
) and three differential
, and ±2 x V
REF
, -V
REF
REF
13
).