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# Example questions: ➢ What is the typical long-term input offset voltage drift for the tsx56x/tsx56xa operational amplifiers at 25°c, and what assumptions were made when determining this value?
➢ What is the typical gain bandwidth product (gbp) at a supply voltage of 5v with a 100pf load, and what is the change in gbp if the supply voltage is reduced to 5v?
➢ How does the slew rate change when the supply voltage is increased from 5v to 5v? compare the values from table 4 and table 5.

Part No.	TSX561
Manufacturer	STMICROELECTRONICS
Size	1,018 Kbytes
Pages	28 pages
Description	Micropower, wide bandwidth (900 kHz), 16 V CMOS operational amplifiers

Datasheet Summary with AI

Key Considerations:

️· Dual Supply Voltages: Data is provided for both 3V and 5V operation. Characteristics will vary depending on the voltage selected.
️· Temperature Dependence: Many parameters are specified across a temperature range of -40°C to +125°C.
️· Typical vs. Guaranteed: Be aware of what is a "typical" value versus a "guaranteed" minimum/maximum.

I. DC Characteristics (Common to Both 3V & 5V)

️· Input Offset Voltage (Vio):
- TSX56xA: 600 µV (typical at 25°C), up to 1800 µV (-40°C to +125°C)
- TSX56x: 1 mV (typical at 25°C), up to 2.2 mV (-40°C to +125°C)
️· Input Offset Voltage Drift (ΔVio/ΔT): 2-12 µV/°C (over temperature).
️· Input Bias Current (Iib): 1-200 pA (depending on voltage and temperature)
️· Input Offset Current (Iio): 1-200 pA (depending on voltage and temperature)
️· Common Mode Rejection Ratio (CMRR): 50-84 dB (depending on voltage and temperature)
️· Large Signal Voltage Gain (Avd): 83-85 dB

II. DC Characteristics – 3V Supply

️· Supply Voltage: 3V
️· Supply Current (ICC) per channel: 235-350µA
️· High Level Output Voltage (VOH): 70mV
️· Low Level Output Voltage (VOL): 70mV

III. DC Characteristics – 5V Supply

️· Supply Voltage: 5V
️· Supply Current (ICC) per channel: 235-400µA
️· High Level Output Voltage (VOH): 70-100mV
️· Low Level Output Voltage (VOL): 70-100mV

IV. AC Characteristics (Common to Both 3V & 5V)

️· Gain Bandwidth Product (GBP): 700-850 kHz
️· Unity Gain Frequency (Fu): 730 kHz
️· Phase Margin (Φm): 55 degrees
️· Gain Margin (Gm): 9 dB
️· Slew Rate (SR): 1.1 V/µs
️· Low-Frequency Peak-to-Peak Input Noise (∫en): 15-15 µVpp
️· Equivalent Input Noise Voltage Density (en): 55nV/Hz @ 1kHz, 29nV/Hz @ 10kHz
️· Total Harmonic Distortion + Noise (THD+N): 0.002-0.002%

Additional Notes:

️· Long-Term Drift: The TSX56x/TSX56xA exhibits a long-term input offset voltage drift of 5nV/month (typical).
️· Design Guarantees: Some specifications are "guaranteed by design" and are not necessarily tested in production.

Where to find the specific values:

️· Refer to Table 5 for the 5V specifications
️· Refer to Table 3 for the 3V specifications.
️· Section 4.3 details input offset voltage drift over temperature.

This summary should give you a good overview of the key electrical characteristics of these op-amps. Remember to always consult the full datasheet for detailed specifications and application information.