ISL28248

4.5MHz, Dual Precision Rail-to-Rail Input-Output (RRIO) Op Amps with Very Low Input Bias Current

Product Status: Mass Production(*)

OVERVIEW

The ISL28148, ISL28248 are 4.5MHz low-power single and dual operational amplifiers. The parts are optimized for single supply operation from 2.4V to 5.5V, allowing operation from one lithium cell or two Ni-Cd batteries.

The single and dual feature an Input Range Enhancement Circuit (IREC), which enables them to maintain CMRR performance for input voltages greater than the positive supply. The input signal is capable of swinging 0.25V above the positive supply and to 100mV below the negative supply with only a slight degradation of the CMRR performance. The output operation is rail-to-rail.

The parts draw minimal supply current (900μA per amplifier) while meeting excellent DC accuracy, AC performance, noise and output drive specifications. The ISL28148 features an enable pin that can be used to turn the device off and reduce the supply current to a maximum of 16μA. Operation is guaranteed across the -40°C to +125°C temperature range.

KEY FEATURES

  • 4.5MHz gain bandwidth product
  • 900µA supply current (per amplifier)
  • 1.8mV maximum offset voltage (ISL28248)
  • 1pA typical input bias current
  • Down to 2.4V single supply operation
  • Rail-to-rail input and output
  • Enable pin (ISL28148 SOT-23 package only)
  • -40°C to +125°C operation
  • Pb-free (RoHS compliant)

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
ISL28248
Basic Information
生产状态
Mass Production(*)
器件/通道数量
2
带宽 (MHz)
4.5
压摆率 (V/μs)
4
VS (最小值)
2.4 V
VS (最大值)
5.5 V
IS (每放大器)
0.9 mA
噪声VN (nV/√Hz)
28
IBIAS
1 pA
IBIAS (最大值)
30 pA
最大失调电压
1.8 mV
IOUT
68 mA
VOUT (V)
4.99
轨到轨输入
Yes
轨到轨输出
Yes
PSRR (dB)
98
CMRR (dB)
98
热关断
No
增益最小值
1
AVOL (dB)
115
启用
Yes
资质级别
Standard
CAN 采样
YES
温度范围
-40 to +125

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