MAX1299CEAE+ Maxim Integrated Products, MAX1299CEAE+ Datasheet - Page 13

• Manufacturer Part Number: MAX1299CEAE+
• Description: IC TEMP SENS W/ADC 16-SSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX1299CEAE+

• Function: Temp Monitoring System (Sensor)
• Topology: ADC, Multiplexer, Register Bank
• Sensor Type: External & Internal
• Sensing Temperature: -40°C ~ 85°C, External Sensor
• Output Type: MICROWIRE™, QSPI™, SPI™
• Output Alarm: No
• Output Fan: No
• Voltage - Supply: 2.7 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-SSOP
• Full Temp Accuracy: +/- 1 C
• Digital Output - Bus Interface: Serial (3-Wire)
• Digital Output - Number Of Bits: 12 bit
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

input sampling capacitance of the ADC (4pF). Source
impedances below 100kΩ have no significant effect on
MAX1298/MAX1299 AC performance.
Internal protection diodes clamp the analog inputs to
V
0.3V and V
accurate conversions, the inputs should not extend
beyond the supply rails.
If an off-channel analog input extends beyond the
supply rails, limit the input current to 2mA.
Figure 3a. Voltage Conversion Timing Diagram
Figure 3b. Temperature Conversion Timing Diagram
DD
SSTRB
SSTRB
and GND, so channels can swing within GND -
FCLK
FCLK
DD
12-Bit Serial-Output Temperature Sensors
WARMUP
13 f
+ 0.3V without damage. However, for
CLKs
______________________________________________________________________________________
WARMUP
13 f
CLKs
Analog Input Protection
CONVERSION CYCLE 1
ACQUISITION
INPUT
4 f
CLKs
FIRST CONVERSION
ACQUISITION
CONVERSION CYCLE 1
INPUT
f
CLKs
CYCLES 2–12
CONVERTION
REFERENCE
SAMPLING
44 f
CLKs
ACQUISITION 1
The MAX1298/MAX1299 feature a serial interface that is
fully compatible with SPI, QSPI, and MICROWIRE
devices. For SPI/QSPI, ensure that the CPU serial inter-
face runs in master mode so it generates the serial
clock signal. Select a 2.5MHz clock frequency or less,
and set zero values for clock polarity (CPOL) and
phase (CPHA) in the µP control registers. Figure 4
shows detailed serial interface timing information. See
Tables 2–5 for programming information.
WARMUP
13 f
REF
CONVERSION CYCLES 2–12
CLKs
REFERENCE SAMPLING
with 5-Channel ADC
ACQUISITION 2
44 f
REF
CLKs
ACQUISITION
CONVERTION CYCLES 1–12
SECOND CONVERSION
INPUT
48 f
CLKs
Serial Digital Interface
WRITE TO OUTPUT
REGISTER
OUTPUT REGISTER
3 f
AND WRITE TO
SUBTRACTION
CLKs
3 f
CLKs
13