TSZ901 STM | Alldatasheet
Document overview
- Manufacturer or author: Provided By alldatasheet.com(free datasheet download site)
- PDF pages: 15
Technical content
Datasheet sections
- 1 Pin description
- 1.1 TSZ901 single operational amplifier (SOT23-5)
- 2 Maximum ratings
- 3 Electrical characteristics
- 4 Application information
- 4.1 Operating voltages
- 4.2 Input offset voltage drift over the temperature
- 4.3 Maximum power dissipation
- 4.4 PCB layout recommendations
- 4.5 Decoupling capacitor
- 4.6 Macromodel
- 5 Typical applications
- 5.1 Low-side current sensing
- 6 Package information
- 6.1 SOT23-5 package information
- 7 Ordering information
Features
- Very high accuracy and stability: offset voltage – 5 μV max. at 25 °C – 8 μV over the full temperature range (-40 °C to 125 °C)
- Rail-to-rail input and output
- Low supply voltage: 2.5 - 5.5 V
- Low power consumption: 1.5 mA at 5 V
- Gain-bandwidth product: 10 MHz
- AEC-Q100 automotive qualification
- Extended temperature range: -40 °C to 125 °C
- Benefits: – Higher accuracy without calibration – Accuracy virtually unaffected by temperature change
Applications
- High-accuracy signal conditioning
- Automotive current measurement and sensor signal conditioning
Description
The TSZ901 is a single operational amplifier featuring very low offset voltages with virtually zero drift over temperature changes. The TSZ901 offers rail-to-rail input and output, excellent speed/power consumption ratio, and a 10 MHz gain-bandwidth product, while consuming just 1.5 mA at 5 V. The device also features an ultra-low input bias current. These features make the TSZ901 ideal for high-accuracy sensor interfaces. Maturity status link TSZ901 Products Channel Automotive Package TSZ901ILT 1 SOT23-5 TSZ901IYLT 1 • SOT23-5
Related products
Zero-drift amplifier for lower power consumption (3 MHz, 800 µA) TSV771 High-accuracy (200 μV) 5 V amplifier with wider bandwidth (20 MHz) Very high accuracy (5 μV) high bandwidth (10 MHz) zero drift 5 V op amp TSZ901 Datasheet DS15041 - Rev 1 - September 2025 For further information, contact your local STMicroelectronics sales office.
1 Pin description
1.1 TSZ901 single operational amplifier (SOT23-5)
Figure 1. Pin connections (top view) Table 1. Pin description
1 OUT Output channel
2 VCC- Negative supply voltage
3 IN+ Non-inverting input channel
4 IN- Inverting input channel
5 VCC+ Positive supply voltage
2 Maximum ratings
Table 2. Absolute maximum ratings
- All voltage values are with respect to the VCC- pin, unless otherwise specified.
- The maximum input voltage differential value may be extended under the condition that the input current is limited to ±10
- Rth-ja is a typical value, obtained with PCB according to JEDEC 2s2p without vias.
- Human body model: HBM test according to the standard ESDA-JS-001-2017.
- Human body model: HBM test according to the standard AEC-Q100-002.
- Charged device model: the CDM test is performed according to the standard AEC-Q100-011.
Table 3. Operating conditions
3 Electrical characteristics
Table 4. Electrical characteristics at VCC = 5 V, Vicm = VOUT = VCC / 2, T = 25 °C, CL = 47 pF and RL = 10 kΩ connected to VCC / 2 (unless otherwise specified).
Electrical characteristics
Symbol Parameter Conditions Min. Typ. Max. Unit ts Settling time VOUT to 0.1%, Vin = 1 Vp-p, AV = - 1V/V 1 µs EMIRR EMI rejection rate = - 20log (VRFpeak/ΔVio) VRF = 100 mVp, f = 400 MHz 84 dB VRF = 100 mVp, f = 900 MHz 87 VRF = 100 mVp, f = 1800 MHz 90 VRF = 100 mVp, f = 2400 MHz 91 1. See Section 4.2: Input offset voltage drift over the temperature. 2. Guaranteed by design and characterization on a sample of parts, not tested in production. TSZ901
Table 5. Electrical characteristics at VCC = 3.3 V, Vicm = VOUT = VCC / 2, T = 25 °C, CL = 47 pF and RL = 10 kΩ connected to VCC / 2 (unless otherwise specified).
- See Section 4.2: Input offset voltage drift over the temperature.
- Guaranteed by design and characterization on a sample of parts, not tested in production.
Table 6. Electrical characteristics at VCC = 2.5 V, Vicm = VOUT = VCC / 2, T = 25 °C, CL = 47 pF and RL = 10 kΩ connected to VCC / 2 (unless otherwise specified).
- See Section 4.2: Input offset voltage drift over the temperature.
- Guaranteed by design and characterization on a sample of parts, not tested in production.
4 Application information
4.1 Operating voltages
power supplies. However, the parameters are very stable over the full VCC range and several characterization curves show the TSZ901 device characteristics over the full operating range. Additionally, the main specifications are guaranteed over an extended temperature range from -40 to 125 °C.
4.2 Input offset voltage drift over the temperature
The maximum input voltage drift variation over temperature is defined as the offset variation related to the offset value measured at 25 °C. The operational amplifier is one of the main circuits of the signal conditioning chain, and the amplifier input offset (Vio) is a major contributor to the chain accuracy. The signal chain accuracy at 25 °C can be compensated during production at application level. The maximum input voltage drift over temperature enables the system designer to anticipate the effect of temperature variations. The maximum input voltage drift over temperature is computed using Equation 1. Δ V i o Δ T = max V i o _ T − V i o _25 ° C T − 25 ° C T = − 40° C an d T = 125 ° C (1) The datasheet maximum value is guaranteed by a measurement on a representative sample size ensuring a Cpk (process capability index) greater than 1.3.
4.3 Maximum power dissipation
The usable output load current drive is limited by the maximum power dissipation allowed by the device package. The absolute maximum junction temperature for the TSZ901 is 150 °C. The junction temperature can be estimated as follows: T J = P D × θ J A + T A (2) TJ is the die junction temperature. PD is the power dissipated in the package. θJA is the junction to thermal resistance of the package. TA is the ambient temperature. The power dissipated in the package PD is the sum of the quiescent power dissipated and the power dissipated by the output stage transistor. It is calculated as follows: PD = (VCC × ICC) + (VCC+ − VOUT) × IOUT when the op amp is sourcing the current. PD = (VCC × ICC) + (VOUT − VCC−) × IOUT when the op amp is sinking the current. Do not exceed the 150 °C maximum junction temperature for the device. Exceeding the junction temperature limit can cause degradation in the parametric performance or even destroy the device.
4.4 PCB layout recommendations
Particular attention must be paid to the layout of the PCB tracks connected to the amplifier, load, and power supply. The power and ground traces are critical as they must provide adequate energy and grounding for all circuits. The best practice is to use short and wide PCB traces to minimize voltage drops and parasitic inductance. In addition, to minimize parasitic impedance over the entire surface, a multi-via technique that connects the bottom and top layer ground planes together in many locations is often used. The copper traces that connect the output pins to the load and supply pins should be as wide as possible to minimize trace resistance.
4.5 Decoupling capacitor
In order to ensure full functionality of the op amp, it is mandatory to place a decoupling capacitor of at least 22 nF as close as possible to the op amp supply pin. Proper decoupling will help to reduce electromagnetic interference impact. TSZ901
Application information
4.6 Macromodel
Accurate macromodels of the TSZ901 device are available on the STMicroelectronics website at www.st.com. These models are a trade-off between accuracy and complexity (that is, time simulation) of the TSZ901 operational amplifier. They emulate the nominal performance of a typical device within the specified operating conditions mentioned in the datasheet. They also help to validate a design approach and to select the right operational amplifier, but they do not replace on-board measurements. TSZ901
5 Typical applications
5.1 Low-side current sensing
circuit ground. The resulting voltage drop is amplified using the TSZ901. Figure 2. Low-side current sensing schematic attention must be paid to the precision of Rg1 and Rf1, to maximize the accuracy of the measurement.
6 Package information
To meet environmental requirements, ST offers these devices in different grades of ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions, and product status are available at: www.st.com. ECOPACK is an ST trademark.
6.1 SOT23-5 package information
Figure 3. SOT23-5 package outline Table 7. SOT23-5 package mechanical data
Package information
DS15041 - Rev 1 page 11/15
7 Ordering information
Table 8. Order codes
- Qualification and characterization according to AEC Q100 and Q003 or equivalent, advanced screening according to AEC Q001 & Q002 or
equivalent. For qualification status detail, check " Maturity Status Link " on first page (" Quality & Reliability " tab on www.st.com).
Ordering information
DS15041 - Rev 1 page 12/15
Revision history
Table 9. Document revision history 16-Sep-2025 1 Initial release.
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