MAX1289ETA+T Maxim Integrated Products, MAX1289ETA+T Datasheet - Page 9

• Manufacturer Part Number: MAX1289ETA+T
• Description: IC ADC 12BIT 150KSPS 8-TDFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX1289ETA+T

• Number Of Bits: 12
• Sampling Rate (per Second): 150k
• Data Interface: MICROWIRE™, QSPI™, Serial, SPI™
• Number Of Converters: 1
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-WDFN Exposed Pad
• Number Of Adc Inputs: 1
• Architecture: SAR
• Conversion Rate: 150 KSPs
• Resolution: 12 bit
• Input Type: Voltage
• Interface Type: Serial
• Voltage Reference: External
• Supply Voltage (max): 3.3 V
• Maximum Power Dissipation: 1481 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: MAX1289ETA+T

Internal protection diodes that clamp the analog input to
V
GND - 0.3V to V
must not exceed V
than GND by more than 50mV for accurate conversions.
If an off-channel analog input voltage exceeds the
supplies, limit the input current to 2mA.
Figure 5a. Single Conversion AIN1 vs. GND (MAX1286/MAX1287), Unipolar Mode AIN+ vs. AIN- (MAX1288/MAX1289)
Figure 5b. Single Conversion AIN2 vs. GND (MAX1286/MAX1287), Bipolar Mode AIN+ vs. AIN- (MAX1288/MAX1289)
DD
CNVST
CNVST
SCLK
DOUT
SCLK
DOUT
and GND allow the analog input pins to swing from
HIGH-Z
HIGH-Z
150ksps, 12-Bit, 2-Channel Single-Ended, and
t
ACQ
DD
t
ACQ
_______________________________________________________________________________________
DD
+ 0.3V without damage. Both inputs
t
CONV
t
CONV
by more than 50mV or be lower
SAMPLING INSTANT
Analog Input Protection
SAMPLING INSTANT
MSB
B11
MSB
B11
1
1
B10
B10
1-Channel True-Differential ADCs
B9
B9
B8
B8
4
4
B7
B7
The MAX1286–MAX1289 operate from an internal oscilla-
tor, which is accurate within 10% of the 4MHz specified
clock rate. This results in a worst-case conversion time of
3.7µs. The internal clock releases the system micro-
processor from running the SAR conversion clock and
allows the conversion results to be read back at the
processor’s convenience, at any clock rate from 0 to
8MHz.
B6
B6
B5
B5
B4
B4
8
8
B3
B3
B2
B2
B1
B1
LSB
B0
Internal Clock
LSB
B0
12
12
HIGH-Z
HIGH-Z
9