AD7298 Analog Devices, AD7298 Datasheet - Page 4

• Manufacturer Part Number: AD7298
• Description: 8-Channel, 1MSPS, 12-Bit SAR ADC with Temperature Sensor
• Manufacturer: Analog Devices

Specifications of AD7298

• Resolution (bits): 12bit
• # Chan: 8
• Sample Rate: 1MSPS
• Interface: SPI
• Analog Input Type: SE-Uni
• Ain Range: Uni (Vref),Uni 1.0V,Uni 1.25,Uni 2.0V,Uni 2.5V
• Adc Architecture: SAR
• Pkg Type: CSP

AD7298
Parameter
LOGIC INPUTS
LOGIC OUTPUTS
INTERNAL TEMPERATURE SENSOR
CONVERSION RATE
POWER REQUIREMENTS
1
2
3
4
5
6
7
See the Terminology section.
All specifications expressed in decibels are referred to full-scale input, FSR, and tested with an input signal at 0.5 dB below full scale, unless otherwise specified.
Sample tested during initial release to ensure compliance.
Refers to Pin
A correction factor may be required on the temperature sensor results when using an external V
I
Power dissipation is specified with V
TOTAL
Floating State Leakage Current
Floating State Output Capacitance
I
Power Dissipation
Input High Voltage, V
Input Low Voltage, V
Input Current, I
Input Capacitance, C
Output High Voltage, V
Output Low Voltage, V
Operating Range
Accuracy
Resolution
Conversion Time
Track-and-Hold Acquisition Time
Throughput Rate
V
V
TOTAL
DD
DRIVE
Normal Mode (Operational)
Normal Mode (Static)
Partial Power-Down Mode
Full Power-Down Mode
Normal Mode (Operational)
Normal Mode (Static)
Partial Power-Down Mode
Full Power-Down Mode
is the total current flowing in V
6
V
REF
specified for 25
IN
7
INL
IN
INH
3
OL
OH
o
C.
DD
DD
and V
= V
3
DRIVE
3
DRIVE
= 3.6 V, unless otherwise noted.
.
Min
0.7 × V
V
V
−40
2.8
1.65
DRIVE
DRIVE
− 0.3
− 0.2
DRIVE
Rev. B | Page 4 of 24
Typ
±0.01
3
±0.01
8
±1
±1
0.25
1
3
3
5.8
4.1
2.7
1
17.4
14.8
9.8
3.6
Max
+0.3 × V
±1
0.4
±1
+125
±2
±3
t
100
100
1
10
3.6
3.6
6.3
4.6
3.3
1.6
10
18.9
22.7
16.6
11.9
5.8
36
2
+ 16 × t
DRIVE
REF
SCLK
(see the Temperature Sensor Averaging section).
Unit
V
V
μA
pF
V
V
V
μA
pF
°C
°C
°C
μs
μs
ns
MSPS
KSPS
V
V
mA
mA
mA
μA
μA
mW
mW
mW
mW
μW
μW
Test Conditions/Comments
V
V
V
T
T
LSB size
For V
T
Full-scale step input
f
conversions, one cycle latency
For the T
Digital inputs = 0 V or V
V
T
T
T
T
V
SCLK
A
A
SENSE
A
A
A
A
IN
DRIVE
DRIVE
DD
DD
= −40°C to +85°C
= +85°C to +125°C
= −40°C to +25°C
= −40°C to +125°C
= −40°C to +25°C
= −40°C to +125°C
= 0 V or V
= 3.6 V, V
= 3 V, V
= 20 MHz, for analog voltage
IN0
< 1.8
≥ 1.8
temperature sensor channel
to V
SENSE
DRIVE
IN7
DRIVE
DRIVE
channel, one cycle latency
, with one cycle latency
= 3 V
= 3.6 V
DRIVE