ISL28274FAZ Intersil, ISL28274FAZ Datasheet - Page 15

• Manufacturer Part Number: ISL28274FAZ
• Description: IC INSTR/OP AMP RRIO SGL 16-QSOP
• Manufacturer: Intersil

Specifications of ISL28274FAZ

• Amplifier Type: Instrumentation
• Number Of Circuits: 2
• Output Type: Rail-to-Rail
• Slew Rate: 0.5 V/µs
• Gain Bandwidth Product: 6MHz
• Current - Input Bias: 10pA
• Voltage - Input Offset: 35µV
• Current - Supply: 120µA
• Current - Output / Channel: 31mA
• Voltage - Supply, Single/dual (±): 2.4 V ~ 5 V, ±1.2 V ~ 2.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 16-QSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• -3db Bandwidth: -

Description of Operation and Application
Information
Product Description
The ISL28274 and ISL28474 provide both a micropower
instrumentation amplifier (Amp A) and a low power precision
amplifier (Amp B) in the same package. The amplifiers
deliver rail-to-rail input amplification and rail-to-rail output
swing on a single 2.4V to 5V supply. They also deliver
excellent DC and AC specifications while consuming only
60µA typical supply current per amplifier. Because the
instrumentation amplifiers provide an independent pair of
feedback terminals to set the gain and to adjust the output
Pin Descriptions
IA = Instrumentation Amplifier
(16 LD QSOP)
1, 9, 13, 14
ISL28274
IN-
10
11
12
15
16
2
3
4
5
6
7
8
CIRCUIT 1
(24 LD QSOP)
ISL28474
11, 14
10, 15
12, 13
1, 24
2, 23
3, 22
4, 21
5, 20
6, 19
8, 17
9, 16
18
7
V
V
+
IN+
-
15
PIN NAME
IA OUT_1
IA OUT_2
IA FB+_1
IA FB+_2
IA FB-_1
IA FB-_2
IA IN+_1
IA IN+_2
IA IN-_1
IA IN-_2
IA OUT
IA FB+
IA FB-
OUT 1
OUT 2
IA IN+
IA IN-
IN+ 1
IN+ 2
DNC
DNC
IN- 1
IN- 2
OUT
IN+
NC
IN-
V+
V-
EQUIVALENT
ISL28274, ISL28474
CIRCUIT
Circuit 2
Circuit 1
Circuit 1
Circuit 1
Circuit 1
Circuit 3
Circuit 1
Circuit 1
Circuit 2
Circuit 3
CIRCUIT 2
No internal connection
Instrumentation Amplifier output
Instrumentation Amplifier Feedback from non-inverting output
Instrumentation Amplifier Feedback from inverting output
Instrumentation Amplifier inverting input
Instrumentation Amplifier non-inverting input
Do Not Connect, Internal connection - Must be left floating
Negative power supply
Do Not Connect, Internal connection - Must be left floating
Amplifier non-inverting input
Amplifier inverting input
Amplifier output
Positive power supply
level, the in-amp achieves high common-mode rejection
ratio regardless of the tolerance of the gain setting resistors.
The instrumentation amplifier is internally compensated for a
minimum closed loop gain of 100 or greater.
Input Protection
The input and feedback terminals have internal ESD
protection diodes to both positive and negative supply rails,
limiting the input voltage to within one diode drop beyond the
supply rails. If overdriving the inputs is necessary, the
external input current must never exceed 5mA. An external
series resistor may be used as a protection to limit excessive
external voltage and current from damaging the inputs.
V
OUT
V
-
+
DESCRIPTION
V+
V-
CIRCUIT 3
CAPACITIVELY
COUPLED
ESD CLAMP
May 14, 2009
FN6345.3