Datasheet

Application information TSV731, TSV732, TSV734
16/29 DocID023708 Rev 2
4 Application information
4.1 Operating voltages
The TSV73x series of devices can operate from 1.5 V to 5.5 V. The parameters are fully
specified for 1.8 V, 3.3 V, and 5 V power supplies. However, they are very stable in the full
V
CC
range and several characterization curves show TSV73x device characteristics at 1.5 V.
In addition, the main specifications are guaranteed in the extended temperature range from
-40 °C to +125 °C.
4.2 Rail-to-rail input
The TSV731, TSV732, and TSV734 devices have a rail-to-rail input, and the input common
mode range is extended from V
CC-
- 0.1 V to V
CC+
+ 0.1 V.
4.3 Rail-to-rail output
The output levels of the TSV73x operational amplifiers can go close to the rails: to a
maximum of 40
mV below the upper rail and to a maximum of 75 mV above the lower rail
when a 10
kΩ resistive load is connected to V
CC
/2.
4.4 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 C
pk
(process capability index) greater than 1.33.
ΔV
io
ΔT
------------ max
V
io
T() V
io
25° C()–
T25° C–
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=