AD7298BCPZ-RL7(RevPrA) 查看數據表（PDF） - Analog Devices

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AD7298BCPZ-RL7
(Rev.:RevPrA)

8-Channel, 1MSPS, 12-Bit SAR ADC with Temperature Sensor

Analog Devices 

Preliminary Technical Data

AD7298

Parameter

LOGIC INPUTS

Input High Voltage, VINH

Input Low Voltage, VINL

Input Current, IIN

Input Capacitance, CIN2

LOGIC OUTPUTS

Output High Voltage, VOH

Output Low Voltage, VOL

Floating State Leakage Current

Floating State Output Capacitance2

TEMPERATURE SENSOR—INTERNAL

Operating Range

Accuracy

Resolution

Min

0.7 ×

VDRIVE

Typ

Max Unit

V

±0.01

3

+0.3 x V

VDRIVE

±1

µA

pF

Test Conditions/Comments

VIN = 0 V or VDRIVE

VDRIVE −

V

0.2

0.4

V

±0.01 ±1

µA

8

pF

−40

+125

±1

±2

°C

±2

±3

°C

0.25

°C

TA = −40°C to +85°C

TA = >85°C to 125°C

LSB size

CONVERSION RATE

Conversion Time

Track/Hold Acquisition Time2

Throughput Rate

POWER REQUIREMENTS

VDD

VDRIVE

ITOTAL5

Normal Mode (Operational) 6

Normal Mode (Static)

Partial Power-Down Mode

Full Power-Down Mode

Power Dissipation

Normal Mode (Operational)

Normal Mode (Static)

Partial Power-Down Mode

Full Power-Down Mode

T2 + 16 1

× tSCL

100

2.8

3

1.65

3

5

μs

For VIN0 to VIN7, with one cycle Latency.

μs

TBD ns

TSENSE Channel

Full-scale step input

1

MSPS fSCLK = 20 MHz, for analog voltage conversions,

one cycle Latency,

10

KSPS

For TSENSE channel, one cycle Latency

Digital inputs = 0 V or VDRIVE

3.6

V

See

3.6

V

VDD = 3.3V

5

mA

3

mA

TBD mA

60

μA

16.5 mW

VDD = 3.3V

9.9

mW

TBD mW

1.65 μW

1 See the Terminology Section.

2 Sample tested during initial release to ensure compliance.

3 Refers to Pin VREF specified for 25oC.

4 VREF variations from 2.5V will alter the gain error of the temperature sensor, oC per LSB, and a correction factor may be required, See Section X.

5 ITOTAL is the total current flowing in VDD and VDRIVE.

6 Current and power typical specifications are based on results with VDD = 3V and VDRIVE = 1.8V

Rev. PrA | Page 3 of 18

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