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AD694JNZ

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P17
AD694
–12–
REV. B
Figure 15. Low Cost Sensor Transmitter
The circuit shown, will convert a positive differential signal at
V
IN
to a 4–20 mA current. The circuit has common-mode range
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
S
. A single supply am-
plifier could be used instead to extend the common-mode range
down to about 1.5 V.
As shown, the circuit handles positive differential signals (V
IN
positive). To handle bipolar differential signals (V
IN
is positive
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
A
of 1 V (or half scale) for a zero
volt differential input from the sensor.
AD694
REV. B
–13–
OUTLINE DIMENSIONS
16-Lead Ceramic DIP-Glass Hermetic Seal Package [CERDIP]
(Q-16)
Dimensions shown in millimeters and (inches)
16
18
9
7.87 (0.3100)
5.59 (0.2200)
PIN 1
0.13
(0.0051)
MIN
2.03 (0.0799)
MAX
15
0
8.13 (0.3201)
7.37 (0.2902)
0.38 (0.0150)
0.20 (0.0079)
SEATING
PLANE
5.08 (0.2000)
MAX
21.34 (0.8402) MAX
3.81(0.1500)
MIN
5.08 (0.2000)
3.18 (0.1252)
0.58 (0.0228)
0.36 (0.0142)
2.54
(0.1000)
BSC
1.78 (0.0701)
0.76 (0.0299)
1.52 (0.0598)
0.38 (0.0150)
CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS
(IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR
REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN
16-Lead Plastic Dual-in-Line Package [PDIP]
(N-16)
Dimensions shown in millimeters and (inches)
16
1
8
9
PIN 1
21.34 (0.8402)
18.92 (0.7449)
7.11 (0.2799)
6.10 (0.2402)
SEATING
PLANE
1.52 (0.0598)
0.38 (0.0150)
5.33 (0.2098)
MAX
0.56 (0.0220)
0.36 (0.0142)
4.06 (0.1598)
2.93 (0.1154)
2.54
(0.1000)
BSC
1.77 (0.0697)
1.15 (0.0453)
3.30
(0.1299)
MIN
4.95 (0.1949)
2.93 (0.1154)
0.38 (0.0150)
0.20 (0.0079)
8.25 (0.3248)
7.62 (0.3000)
CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS
(IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR
REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN
16-Lead Standard Small Outline Package [SOIC]
Wide Body
(R-16)
Dimensions shown in millimeters and (inches)
SEATING
PLANE
0.30 (0.0118)
0.10 (0.0039)
0.51 (0.0201)
0.33 (0.0130)
2.65 (0.1043)
2.35 (0.0925)
1.27 (0.0500)
BSC
16
9
8
1
10.65 (0.4193)
10.00 (0.3937)
7.60 (0.2992)
7.40 (0.2913)
PIN 1
10.50 (0.4134)
10.10 (0.3976)
0.32 (0.0126)
0.23 (0.0091)
8ⴗ
0ⴗ
0.75 (0.0295)
0.25 (0.0098)
ⴛ 45ⴗ
1.27 (0.0500)
0.40 (0.0157)
COPLANARITY
0.10
CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS
(IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR
REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN
COMPLIANT TO JEDEC STANDARDS MS-013AA
AD694
–14–
REV. B
Revision History
Location Page
8/02—Data Sheet changed from REV. A to REV. B.
Updated Outline Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P17

AD694JNZ

Mfr. #:
Buy AD694JNZ
Manufacturer:
Analog Devices Inc.
Description:
Instrumentation Amplifiers IC 4-20mA Mono Current Transmitter
Lifecycle:
New from this manufacturer.
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