TSX631 STMICROELECTRONICS | Alldatasheet
Document overview
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- PDF pages: 31
Technical content
Datasheet sections
- 1 Package pin connections
- 2 Absolute maximum ratings and operating conditions
- 3 Electrical characteristics
- 4 Application information
- 4.1 Operating voltages
- 4.2 Rail-to-rail input
- 4.3 Input offset voltage drift over temperature
- 4.4 Long term input offset voltage drift
- 4.5 High values of input differential voltage
- 4.6 PCB layouts
- 4.7 Macromodel
- 5 Package information
- 5.1 SOT23-5 package information
- 5.2 DFN8 2x2 package information
- 5.3 MiniSO-8 package information
- 5.4 QFN16 3x3 package information
- 5.5 TSSOP14 package information
- 6 Ordering information
- 7 Revision history
Features
- Low power consumption: 60 µA max at 16 V
- Supply voltage: 3.3 V to 16 V
- Rail-to-rail input and output
- Gain bandwidth product: 200 kHz typ
- Low offset voltage: – 500 µV max for “A” version – 1 mV max for standard version
- Low input bias current: 1 pA typ
- Automotive qualification Benefits
- Power savings in power-conscious
applications
- Easy interfacing with high impedance sensors
Related products
- See TSX56x or TSX92x series for higher gain bandwidth products (900 kHz or 10 MHz)
- Industrial signal conditioning
- Automotive signal conditioning
- Active filtering
- Medical instrumentation
- High impedance sensors
Description
The TSX63x and TSX63xA series of operational amplifiers offer low voltage operation and rail-to- rail input and output. TSX631 is the single version, TSX632 the dual version and TSX634 the quad version, with pinouts compatible with industry standards. The TSX63x and TSX63xA series offer a 200 kHz gain bandwidth product while consuming 60 µA maximum at 16 V. The devices are housed in the tiniest industrial packages. These features make the TSX63x and TSX63xA family ideal for sensor interfaces and industrial signal conditioning. The wide temperature range and high ESD tolerance ease the use in harsh automotive applications. SOT23-5 DFN8 2x2 MiniSO-8 QFN16 3x3 TSSOP14 Single Dual Quad Table 1. Device summary
1 Package pin connections
Figure 1. Pin connections for each package (top view)
2 Absolute maximum ratings and operating conditions
Table 2. Absolute maximum ratings (AMR)
- All voltage values, except the differential volt age are with respect to network ground terminal.
- The differential voltage is the non-inverting input termi nal with respect to the inverting input terminal. See
Section 4.5 for precautions of using the TSX631 with high differential input voltage.
- V CC-Vin must not exceed 18 V, Vin must not exceed 18 V.
- Input current must be limited by a resistor in series with the inputs.
- Short-circuits can c ause excessive heating and destructive dissipation.
- Human body model: 100 pF discharged through a 1.5 k Ω resistor between two pins of the device, done for
all couples of pin combinations with other pins floating.
- Machine model: a 200 pF cap is charged to the spec ified voltage, then discharged directly between two
combinations with other pins floating.
- Charged device model: all pins plus package ar e charged together to the specified voltage and then
discharged directly to the ground. Table 3. Operating conditions
3 Electrical characteristics
Table 4. Electrical characteristics at VCC+ = +3.3 V with VCC- = 0 V, Vicm = VCC/2, T = 25 ° C, and
- See Chapter 4.3: Input offset voltage drift over temperature on page 18
Table 5. Electrical characteristics at VCC+ = +5 V with VCC- = 0 V, Vicm = VCC/2, T = 25 ° C, and
- See Chapter 4.3: Input offset voltage drift over temperature on page 18
- Typical value is based on the Vio drift observed after 100 0h at 125°C extrapolated to 25°C using the Arrhenius law and
Chapter 4.4: Long term input offset voltage drift on page 19.
Table 6. Electrical characteristics at VCC+ = +10 V with VCC- = 0 V, Vicm = VCC/2, T = 25 ° C, and
- See Chapter 4.3: Input offset voltage drift over temperature on page 18
- Typical value is based on the Vio drift observed after 100 0h at 125°C extrapolated to 25°C using the Arrhenius law and
Chapter 4.4: Long term input offset voltage drift on page 19.
Table 7. Electrical characteristics at VCC+ = +16 V with VCC- = 0 V, Vicm = VCC/2, T = 25 ° C, and
- See Chapter 4.3: Input offset voltage drift over temperature on page 18
- Typical value is based on the Vio drift observed after 100 0h at 125°C extrapolated to 25°C using the Arrhenius law and
Chapter 4.4: Long term input offset voltage drift on page 19.
4 Application information
4.1 Operating voltages
The amplifiers of the TSX63x and TSX63xA series can operate from 3.3 to 16 V. Their parameters are fully specified at 3.3, 5, 10 and 16 V power supplies. However, the parameters are very stable in the full V CC range. Additionally, the main specifications are guaranteed in extended temperature ranges from -40 ° C to +125 ° C.
4.2 Rail-to-rail input
The TSX63x and TSX63xA are built with two complementary PMOS and NMOS input differential pairs. The devices have a rail-to-rail input, and the input common mode range is extended from V CC-- 0.1 V to VCC+ + 0.1 V. However, the performance of these devices is clearly optimized for the PMOS differential pairs (which means from VCC- - 0.1V to VCC+ - 1.65V). Beyond VCC+ - 1.65 V, the op-amp is still functional but with a degraded performance as can be observed in the electrical characteristics section of this datasheet (mainly Vio). These performances are suitable for a number of applications requiring rail-to-rail input and output. The devices are guaranteed without phase reversal.
4.3 Input offset voltage drift over temperature
The maximum input voltage drift over the temperature variation is defined as the offset variation related to 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 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. Equation 1 with T = -40 °C and 125 °C. The datasheet maximum value is guaranteed by a measurement on a representative sample size ensuring a Cpk (process capability index) greater than 2. ΔVio
TSX63x, TSX63xA Application information
4.4 Long term input offset voltage drift
To evaluate product reliability, two types of stress acceleration are used:
- Voltage acceleration, by changing the applied voltage
- Temperature acceleration, by changing the die temperature (below the maximum junction temperature allowed by the technology) with the ambient temperature. The voltage acceleration has been defined based on JEDEC results, and is defined using Equation 2. Equation 2 Where: AFV is the voltage acceleration factor β is the voltage acceleration constant in 1/V, constant technology parameter (β = 1) VS is the stress voltage used for the accelerated test VU is the voltage used for the application The temperature acceleration is driven by the Arrhenius model, and is defined in Equation 3. Equation 3 Where: AFT is the temperature acceleration factor Ea is the activation energy of the technology based on the failure rate k is the Boltzmann constant (8.6173 x 10-5 eV.K-1) TU is the temperature of the die when VU is used (K) TS is the temperature of the die under temperature stress (K) The final acceleration factor, AF, is the multiplication of the voltage acceleration factor and the temperature acceleration factor (Equation 4). Equation 4 AF is calculated using the temperature and voltage defined in the mission profile of the product. The AF value can then be used in Equation 5 to calculate the number of months of use equivalent to 1000 hours of reliable stress duration. AFV e β VS VU–()⋅ AFT e Ea TU TS ⎛⎞⋅ AF AFT AFV×=
To evaluate the op-amp reliability, a follower stress condition is used where VCC is defined as a function of the maximum operating voltage and the absolute maximum rating (as recommended by JEDEC rules). The Vio drift (in µV) of the product after 1000 h of stress is tracked with parameters at different measurement conditions (see Equation 6). Equation 6 The long term drift parameter (ΔVio), estimating the reliability performance of the product, is obtained using the ratio of the Vio (input offset voltage value) drift over the square root of the calculated number of months (Equation 7). Equation 7 where Vio drift is the measured drift value in the specified test conditions after 1000 h stress duration.
4.5 High values of inpu t differential voltage
In closed loop configuration, which represents the typical use of an op-amp, the input differential voltage is low (close to Vio). However, some specific conditions can lead to higher input differential values, such as:
- operation in an output saturation state
- operation at speeds higher than the device bandwidth, with output voltage dynamics limited by slew rate.
- use of the amplifier in a comparator configuration, hence in open loop Use of the TSX631 in comparator configuration, especially combined with high temperature and long duration can create a permanent drift of Vio. All channels of the dual and quad versions of the TSX632 and TSX634 are virtually unaffected when used in comparator configuration.
4.6 PCB layouts
For correct operation, it is advised to add 10 nF decoupling capacitors as close as possible to the power supply pins. Months A F 1000 h× 12 months 24 h 365.25 days×()⁄×= VCC maxVop with Vicm VCC 2⁄== ΔVio Vio drift months()
TSX63x, TSX63xA Application information
4.7 Macromodel
Accurate macromodels of the TSX63x and TSX63xA are available on STMicroelectronics’ web site at www.st.com. These models are a trade-off between accuracy and complexity (that is, time simulation) of the TSX63x and TSX63xA operational amplifiers. They emulate the nominal performances 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.
5 Package information
In order 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.
5.1 SOT23-5 package information
Figure 28. SOT23-5 package mechanical drawing Table 8. SOT23-5 package mechanical data
5.2 DFN8 2x2 pack age information
Figure 29. DFN8 2x2 package mechanical drawing Table 9. DFN8 2x2 package mechanical data
5.3 MiniSO-8 package information
Figure 30. MiniSO-8 package mechanical drawing Table 10. MiniSO-8 package mechanical data
5.4 QFN16 3x3 package information
Figure 31. QFN16 3x3 package mechanical drawing
Table 11. QFN16 3x3 package mechanical data
5.5 TSSOP14 package information
Figure 32. TSSOP14 package mechanical drawing Table 12. TSSOP14 package mechanical data
6 Ordering information
Table 13. Order codes
- Qualification and characterization according to AEC Q100 and Q003 or equivalent, advanced
screening according to AEC Q001 & Q 002 or equivalent are on-going.
1 SOT23-5 K188
1 SOT23-5 K189
1 SOT23-5 K190
7 Revision history
Table 14. Document revision history