TS507 STMicroelectronics, TS507 Datasheet - Page 16

• Manufacturer Part Number: TS507
• Description: High precision single supply rail to rail op-amp
• Manufacturer: STMicroelectronics

Specifications of TS507

• Ultra Low Offset Voltage: 25μV typ, 100μV max
• High Speed: 1.9MHz
• Low Consumption: 0.8mA at 2.7V
• Very Large Signal Voltage Gain: 131dB
• High Power Supply Rejection Ratio: 105dB

Application note
3.2
16/20
In-the-loop-compensation technique
The second technique is called the in-the-loop-compensation technique, because the
additional components (a resistor and a capacitor) used to improve the stability are inserted
in the feedback loop (see
Figure 30. In-the-loop compensation schematics
This compensation method allows, by a good choice of compensation components, to
compensate the original pole (caused by the capacitive load), and thus to improve stability.
The main drawback of this circuit is the reduction of the output swing, because the isolation
resistor is in the signal path.
Table 6
capacitors (and with R
Table 6.
1. Parameter guaranteed by design at 25°C.
Load capacitor
10 pF to 100 pF
100 pF to 1 nF
1 nF to 10 nF
range
helps you to choose the best compensation components for different ranges of load
Best compensation components for different load capacitor ranges in
voltage follower configuration for TS507 (with R
L
= 10 kΩ) in voltage follower configuration.
R
Figure
IL
1
1
1
(kΩ)
30).
C
IL
250
250
630
(pF)
Minimum gain
margin (dB)
17
16
11
L
= 10 kΩ)
(1)
Minimum phase
(degree)
margin
55
27
42
TS507
(1)