AD694 Analog Devices, AD694 Datasheet - Page 3

• Manufacturer Part Number: AD694
• Description: 4.20 mA Transmitter
• Manufacturer: Analog Devices

Model
BUFFER AMPLIFIER
NOTES
1
2
3
4
5
6
Specifications subject to change without notice.
No pin, other than I
permitted to become more positive than V
REV. A
ABSOLUTE MAXIMUM RATINGS
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +36 V
V
Input Voltage, (Either Input Pin 2 or 3) . . . . . –0.3 V to +36 V
Reference Short Circuit to Common . . . . . . . . . . . . Indefinite
Alarm Voltage, Pin 10 . . . . . . . . . . . . . . . . . . . . . . . . . . +36 V
4 mA Adj, Pin 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +1 V
4 mA On/Off, Pin 9 . . . . . . . . . . . . . . . . . . . . . . . . 0 V to 36 V
Storage Temperature Range
Lead Temperature, 10 sec Soldering . . . . . . . . . . . . . . +300 C
Maximum Junction Temperature . . . . . . . . . . . . . . . . . +150 C
Maximum Case Temperature
The single supply op amps of the AD694, lacking pull down current, may not reach 0.000 V at their outputs. For this reason, span, offset, and nonlinearity are
Offset at 4 mA out and 0 mA out are extrapolated to 0.000 V input from measurements made at 5 mV and at full scale. See Note 1.
Nonlinearity is specified as the maximum deviation of the output, as a % of span, from a straight line drawn through the endpoints of the transfer function.
Voltage reference drift guaranteed by the Box Method. The voltage reference output over temperature will fall inside of a box whose length is determined by the
Devices tested at these temperatures with a pass transistor. Allowable temperature range of operation is dependent upon internal power dissipation. Absolute
Buffer amplifier specs for reference. Buffer amplifier offset and drift already included in Span and Zero accuracy specs above.
specified with the input amplifiers operating in their linear range. The input voltage used for the tests is 5 mV to 2 V and 5 mV to 10 V for the two precalibrated
input ranges. Span and zero accuracy are tested with the buffer amplifier configured as a follower.
temperature range and whose height is determined by the maximum temperature coefficient multiplied by the temperature span in degrees C.
maximum junction and case temperature should not be exceeded. See section: “Power Dissipation Considerations.”
S
Input Offset Voltage
Frequency Response
Input Voluge Noise (0.1 Hz to 10 Hz)
Open-Loop Gain
Output Voltage @ Pin 1, FB
AD694Q . . . . . . . . . . . . . . . . . . . . . . . . . –65 C to +150 C
AD694N, R . . . . . . . . . . . . . . . . . . . . . . . –65 C to +125 C
Plastic Package (N, R) . . . . . . . . . . . . . . . . . . . . . . . +125 C
Cerdip Package (Q) . . . . . . . . . . . . . . . . . . . . . . . . . +125 C
to I
Initial Offset
T
vs. Supply
vs. Common Mode
Trim Range
Unity Gain, Small Signal
V
Minimum Output Voltage
Maximum Output Voltage
O
MIN
OUT
= +10 V, R
PIN CONFIGURATION (N, R, Q PACKAGE)
to T
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +36 V
MAX
L
OUT
10 k
6
(11) and Sig (2), (3) as noted, may be permitted to become more negative than Com (5). No pin may be
1
S
(13).
Min
80
80
V
S
2.5
–2.5 V
AD694JN/AQ/AR
Typ
90
90
300
2
50
1.0
V
150
2
4.0
S
–2 V
–3–
Model
AD694JN
AD694AQ
AD694AR
AD694BQ
AD694BR
*N = Plastic DIP; Q = Cerdip, R = SOIC.
Transistor Count: . . . . . . . . . . . . . . . . . . . . .75 Active Devices
Substrate Connection: . . . . . . . . . . . . . . . . . . . . to Com, Pin 5
Thermal Characteristics:
Plastic (N) Package:
Cerdip (Q) Package:
Plastic (R) Package:
ESD Susceptibility
All pins are rated for a minimum of 4000 V protection, except
for Pins 2, 3 and 9 which are rated to survive a minimum of
1500 V. ESD testing conforms to Human Body Model. Always
practice ESD prevention.
Max
10
3
500
Min
80
80
V
S
2.5
–2.5 V
ORDERING GUIDE
JC
CA
JC
CA
JC
CA
AD694BQ/BR
= 50 C/Watt
= 30 C/Watt
= 27 C/Watt
(Still Air) = 85 C/Watt
(Still Air) = 70 C/Watt
(Still Air) = 73 C/Watt
Temperature
Range
0 C to +70 C
–40 C to +85 C
–40 C to +85 C
–40 C to +85 C
–40 C to +85 C
Typ
90
90
300
2
50
1.0
V
50
2
4.0
S
–2 V
Max
10
3
500
kHz
Units
dB
dB
mV
V/mV
mV
V
V
V/ C
V p-p
AD694
Package
Option*
N-16
Q-16
R-16
Q-16
R-16