ISL28258FBZ Intersil, ISL28258FBZ Datasheet - Page 12

• Manufacturer Part Number: ISL28258FBZ
• Description: IC OPAMP RRIO PREC 68UA 8-SOIC
• Manufacturer: Intersil

Specifications of ISL28258FBZ

• Amplifier Type: General Purpose
• Number Of Circuits: 2
• Output Type: Rail-to-Rail
• Slew Rate: 0.1 V/µs
• Gain Bandwidth Product: 200kHz
• -3db Bandwidth: 420kHz
• Current - Input Bias: 1pA
• Voltage - Input Offset: 3.1µV
• Current - Supply: 68µA
• Current - Output / Channel: 30mA
• Voltage - Supply, Single/dual (±): 2.4 V ~ 5.5 V, ±1.2 V ~ 2.75 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Pin Descriptions
Applications Information
Introduction
The ISL28158 is a single CMOS rail-to-rail input, output
(RRIO) operational amplifier with an enable feature. The
ISL28258 is a dual version without the enable feature. Both
devices are designed to operate from single supply (2.4V to
5.5V) or dual supplies (±1.2V to ±2.75V).
Rail-to-Rail Input/Output
These devices feature PMOS inputs with an input common
mode range that extends up to 0.3V beyond the V+ rail, and
to 0.1V below the V- rail. The CMOS output features
excellent drive capability, typically swinging to within 6mV of
either rail with a 100kΩ load.
(6 Ld SOT-23)
ISL28158
4
3
2
1
6
5
(8 Ld SOIC)
ISL28158
1, 5
2
3
4
6
7
8
12
(8 Ld MSOP)
(8 Ld SOIC)
ISL28258
2 (A)
6 (B)
3 (A)
5 (B)
1 (A)
7 (B)
4
8
PIN NAME
OUT (A)
OUT (B)
IN+ (A)
IN+ (B)
IN- (A)
IN- (B)
OUT
IN+
NC
EN
ISL28158, ISL28258
IN-
V+
V-
Not connected
inverting input
Non-inverting input
Negative supply
Output
Positive supply
Chip enable
FUNCTION
Results of Over-Driving the Output
Caution should be used when over-driving the output for
long periods of time. Over-driving the output can occur in two
ways. 1) The input voltage times the gain of the amplifier
exceeds the supply voltage by a large value or, 2) the output
current required is higher than the output stage can deliver.
These conditions can result in a shift in the Input Offset
Voltage (V
conditions.
IN+ and IN- Input Protection
All input terminals have internal ESD protection diodes to both
positive and negative supply rails, limiting the input voltage to
within one diode beyond the supply rails. They also contain
back-to-back diodes across the input terminals (see “Pin
Descriptions” on page 12 - Circuit 1
the input differential voltage is expected to exceed 0.5V, an
OS
) as much as 1µV/hr. of exposure under these
IN-
LOGIC
V+
V-
PIN
EQUIVALENT CIRCUIT
See Circuit 1
See Circuit 2
Circuit 1
Circuit 2
Circuit 3
Circuit 3
)
. For applications where
CAPACITIVELY
COUPLED
ESD CLAMP
V-
V+
OUT
V+
V-
V+
IN+
V-
August 29, 2008
FN6377.3