Datasheet Analog Devices AD7994 — 数据表

4-Channel, 10-and 12-Bit ADCs with I2CCompatible Interface in 16-Lead TSSOP
AD7993/AD7994
FEATURES FUNCTIONAL BLOCK DIAGRAM 10-and 12-bit ADC with fast conversion time: 2 µs typ
4 single-ended analog input channels
Specified for VDD of 2.7 V to 5.5 V
Low power consumption
Fast throughput rate: 188 kSPS
Temperature range:−40°C to +125°C
Sequencer operation
Automatic cycle interval mode
I2C®-compatible serial interface
I2C interface supports standard, fast, and high speed modes
Out-of-range indicator/alert function
Pin-selectable addressing via AS
Shutdown mode: 1 µA max
16-lead TSSOP package
See AD7998 and AD7992 for 8-channel and 2-channel
equivalent devices, respectively. VDD The AD7993/AD7994 provide a 2-wire serial interface that is
compatible with I2C interfaces. Each part comes in two versions,
AD7993-0/AD7994-0 and AD7993-1/AD7994-1, and each
version allows for at least two different I2C addresses. The I2C
interface on the AD7993-0/AD7994-0 supports standard and
fast I2C interface modes. The I2C interface on the AD7993-1/ …

4 Channel, 12-/10-Bit ADCs with I2C
Compatible Interface in 16-Lead TSSOP
AD7994/AD7993 a
Errata Sheet Please be advised that it was necessary to change the pin-out diagram for the AD7994/AD7993 ADCs. Please
discard any pin-out information from AD7994/AD7993 data sheets up to and including Rev PrD.
Packaged material may be identified by the date code; parts with date code 0311 have the old pin-out and will be
no longer manufactured. All other date-coded material will be manufactured according to the new pin-out diagram
which is shown below. AGND 1 AGND 2 AGND 3 AGND 4 AD7994 16 AGND 15 SCL 14 SDA TOP VIEW 13 ALERT (Not to Scale) 12 CONVST VDD 5 REFIN 6 11 AS VIN1 7 10 VIN2 VIN3 8 9 VIN4 REV. A Sept 2003
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Analog Devices, Inc., 2003 …