AD694ARZ-REEL Analog Devices Inc, AD694ARZ-REEL Datasheet - Page 12

• Manufacturer Part Number: AD694ARZ-REEL
• Description: IC TRANSMITTER 4-20MA 16-SOIC
• Manufacturer: Analog Devices Inc
• Type: Current Transmitterr

Specifications of AD694ARZ-REEL

• Input Type: Voltage
• Output Type: Voltage
• Current - Supply: 23mA
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (0.300", 7.5mm Width)
• No. Of Amplifiers: 2
• Input Offset Voltage: 500µV
• Bandwidth: 300kHz
• Amplifier Output: Single Ended
• Cmrr: 90dB
• Slew Rate: 1.3V/µs
• Supply Voltage Range: 4.5V To 36V
• Supply Current: 1.5mA
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Interface: -

AD694
The circuit shown, will convert a positive differential signal at
V
of 3 V to 8 V. The low end of the common-mode range is limited
by the AD708’s ability to pull down on R
plifier could be used instead to extend the common-mode range
down to about 1.5 V.
IN
to a 4–20 mA current. The circuit has common-mode range
S
. A single supply am-
Figure 15. Low Cost Sensor Transmitter
–12–
As shown, the circuit handles positive differential signals (V
positive). To handle bipolar differential signals (V
or negative), the reference pin of the in amp (Point C) must be
offset positively from the 2 V reference. For example, discon-
necting Point C from the 2 V reference and connecting it to a
3 V source would result in a V
volt differential input from the sensor.
A
of 1 V (or half scale) for a zero
IN
is positive
REV. B
IN