MAX1154BEUE-T Maxim Integrated, MAX1154BEUE-T Datasheet - Page 23

• Manufacturer Part Number: MAX1154BEUE-T
• Description: Analog to Digital Converters - ADC
• Manufacturer: Maxim Integrated

Specifications of MAX1154BEUE-T

• Number Of Channels: 10
• Architecture: SAR
• Conversion Rate: 94 KSPs
• Resolution: 10 bit
• Input Type: Single-Ended/Differential
• Snr: Yes
• Interface Type: Serial
• Operating Supply Voltage: 4.5 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: TSSOP-16
• Maximum Power Dissipation: 696 mW
• Minimum Operating Temperature: - 40 C
• Number Of Converters: 1
• Voltage Reference: Internal 4.096 V or External

execute a manual conversion. See Figure 9 for manual
conversion timing:
1) Disable autoscan (set up register scan mode bit to
2) Pull CS low.
3) Initiate a conversion by issuing a Manually
4) Pull CS high to start the conversion.
5) Maintain a logic high on CS to allow for reference
6) Pull CS low.
7) Issue a Read Current Data Register for Selected-
Every voltage measurement (internal V
input channel) requires 10.6µs to complete. If the inter-
nal reference needs to power up (reference mode =
01), an additional 40µs is required every time the
MAX1153/MAX1154 come out of automatic shutdown
mode after a sample wait period greater than 80µs.
Figure 9. Manual Conversion Timing Without Reading Data
with Internal Temperature Sensor and V
zero), if necessary.
Triggered Conversion command (0000, followed by
the address bits of the channel to be converted).
power-up (if the reference mode requires it) and
conversion time.
Channel command (0010, followed by the same
address of the channel in the Manually Triggered
Conversion command).
Stand-Alone, 10-Channel, 10-Bit System Monitors
DOUT
SCLK
DIN
CS
______________________________________________________________________________________
C3
C2
C1 C0
Voltage Measurements
A3
A2 A1
DD
A0
or external
t
PU+CONV
This internal acquisition channel samples and converts
the supply voltage, V
V
with the following equation:
The reference voltage must be larger than 1/2V
the operation to work properly. V
10.6µs (typ) per measurement.
The MAX1153/MAX1154 perform temperature measure-
ment by measuring the voltage across a diode-con-
nected transistor at two different current levels. The
following equation illustrates the algorithm used for
temperature calculations:
DD
V
DD
temperature
value can be calculated from the digitized data
=
2
x current data register content x
(
C3
=
C2
(
_
V
Temperature Measurement
HIGH
DD
C1 C0
.
_
−
A3
V
LOW
A2 A1
DD
DD
)
_
x
Monitoring V
monitoring requires
n x ln
A0
Monitor
⎡
⎢
⎣
q
k
)
I
I
LOW
High
⎛
⎜
⎝
1024
V
⎤
⎥
⎦
REF
DD
⎞
⎟
⎠
DD
for
23