ZHCSUM4D November 1994 – February 2024 LMC6032 , LMC6034
PRODUCTION DATA
6.1.1 Amplifier Topology
The topology chosen for the LMC603x, shown in Figure 6-1, is unconventional compared to general-purpose op amps. The LMC603x incorporates novel op-amp design that enables a wide input common-mode
range and rail to rail output swing even when driving a large load. The input
common-mode range includes ground, making the LMC603x an
excellent choice for single-supply applications. While the LMC603x supports both a wide supply and common-mode voltage range, large input
common-mode voltage can cause a degradation of input bias current performance.
Figure 6-1 LMC603x Circuit Topology (Each
Amplifier)
Figure 6-1 LMC603x Circuit Topology (Each
Amplifier)The large signal voltage gain while sourcing is comparable to traditional bipolar op amps, even with a 600Ω load. The gain while sinking is greater than most CMOS op amps as a result of the additional gain stage; however, under heavy load (600Ω), the gain can be reduced as indicated in Section 5.6.