AD524CD Analog Devices Inc, AD524CD Datasheet - Page 19

• Manufacturer Part Number: AD524CD
• Description: IC AMP INST 1MHZ PREC LN 16CDIP
• Manufacturer: Analog Devices Inc
• Type: Precisionr

Specifications of AD524CD

• Slew Rate: 5 V/µs
• Rohs Status: RoHS non-compliant
• Amplifier Type: Instrumentation
• Number Of Circuits: 1
• Gain Bandwidth Product: 1MHz
• -3db Bandwidth: 1MHz
• Current - Input Bias: 15nA
• Voltage - Input Offset: 50µV
• Current - Supply: 3.5mA
• Voltage - Supply, Single/dual (±): ±6 V ~ 18 V
• Operating Temperature: -25°C ~ 85°C
• Mounting Type: Through Hole
• Package / Case: 16-CDIP (0.300", 7.62mm)
• No. Of Amplifiers: 1
• Input Offset Voltage: 50µV
• Gain Db Min: 1dB
• Gain Db Max: 1000dB
• Bandwidth: 25MHz
• Amplifier Output: Single Ended
• Cmrr: 120dB
• Supply Voltage Range: ± 6V To ±
• Common Mode Rejection Ratio: 120
• Current, Input Bias: ±16 nA
• Current, Input Offset: ±10 nA
• Current, Supply: 3.5 mA (Quiescent)
• Package Type: SBDIP-16
• Power Dissipation: 450 mW
• Resistance, Input: 20 Kilohms
• Temperature, Operating, Maximum: 85 °C
• Temperature, Operating, Minimum: -25 °C
• Temperature, Operating, Range: -25 to +85 °C
• Voltage, Gain: 1-1000 V/V
• Voltage, Input: <36 V
• Voltage, Input Offset: 50 μV
• Voltage, Noise: 7 nV/sqrt Hz (Input), 90 nV/sqrt Hz (Output)
• Voltage, Offset, Input: 50 μV (Max.)
• Voltage, Supply: ±15 V
• Output Type: -
• Current - Output / Channel: -
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

An instrumentation amplifier can be turned into a voltage-
to-current converter by taking advantage of the sense and
reference terminals, as shown in Figure 46.
COMMON
Figure 45. Use of Reference Terminal to Provide Output Offset
ANALOG
+V
–V
+IN
V
–IN
V
IN
S
IN
S
+
–
35V
1µF
12
2
3
1
C1
OFFSET
AD524
INPUT
GAIN TABLE
A B GAIN
0
0
1
1
TRIM
+V
–V
0
1
0
1
8
7
C2
S
S
10
1000
100
1
R1
10kΩ
AD711
10
6
SENSE
REF
K1 – K3 =
THERMOSEN DM2C
4.5V COIL
D1 – D3 = IN4148
9
1
2
3
4
5
6
7
8
PROTECTION
PROTECTION
20kΩ
AD524
20kΩ
A1
V
LOAD
OFFSET
20kΩ
Figure 47. Three-Decade Gain Programmable Amplifier
+V
S
20kΩ
20kΩ
INPUTS
RANGE
GAIN
20kΩ
+5V
4.44kΩ
Rev. F | Page 19 of 28
404Ω
A
B
40Ω
NC = NO CONNECT
16
15
14
13
12
11
10
1
2
5
7
3
4
6
9
10kΩ
DECODER
74LS138
R2
OUT
By establishing a reference at the low side of a current setting
resistor, an output current may be defined as a function of input
voltage, gain, and the value of that resistor. Because only a small
current is demanded at the input of the buffer amplifier (A2)
the forced current, I
drift specifications of A2 must be added to the output offset and
drift specifications of the AD524.
OUTPUT
OFFSET
TRIM
16
15
14
13
SHIELDS
RELAY
Y0
Y1
Y2
NC
+INPUT
–INPUT
K1
G = 10
I
K1
L
=
Figure 46. Voltage-to-Current Converter
R1
V
D1
X
=
L
13
2
3
1
, largely flows through the load. Offset and
V
R1
IN
G = 100
K2
+
–
AD524
K2
=
(
1 +
1
2
5
7
3
4
6
10
6
D2
SENSE
REF
40,000
BUFFER
DRIVER
AD711
7407N
R
G
G = 1000
K3
9
)
K3
A2
16
D3
R1
V
X
10µF
LOAD
LOGIC
COMMON
+5V
I
L
AD524