The LTC1541/LTC1542 combine a micropower amplifier, comparator and bandgap reference (LTC1541) in an 8-pin package. The part operates from a single 2.5V to 12.6V or dual ±1.25V to ±6.3V supply with a typical supply current of 5µA. Both the op amp and comparator feature a common mode input voltage range that extends from the negative supply to within 1.3V of the positive supply. The op amp output stage swings from rail-to-rail. The comparator's inverting input is internally connected to the reference output (LTC1541).
The reference output voltage is 1.2V ±1% over the extended temperature range. The output can drive a bypass capacitor of up to 0.01µF without any oscillations. It can also source up to 2mA and sink up to 20µA.
The op amp is internally compensated to be unity-gain stable with typical GBW at 12kHz and slew rate of 8V/ms. The comparator has ±2.25mV of internal hysteresis to ensure clean output switching, even with slow moving input signals.
The LTC1541/LTC1542 are available in MSOP and SO-8 packages. For space-limited applications, the LTC1541/LTC1542 are available in a 3mm x 3mm low profile(0.8mm) dual fine-pitch leadless package (DFN).
Part Number | Package | Temp | Price(1-99) | Price (1k)* |
---|---|---|---|---|
LTC1542CDD#PBF | 3x3 DFN-8 | C | $1.94 | $1.45 |
LTC1542CDD#TRPBF | 3x3 DFN-8 | C | $1.50 | |
LTC1542CMS8#PBF | MS-8 | C | $1.80 | $1.35 |
LTC1542CMS8#TRPBF | MS-8 | C | $1.40 | |
LTC1542CS8#PBF | SO-8 | C | $1.70 | $1.20 |
LTC1542CS8#TRPBF | SO-8 | C | $1.25 | |
LTC1542IDD#PBF | 3x3 DFN-8 | I | $2.13 | $1.61 |
LTC1542IDD#TRPBF | 3x3 DFN-8 | I | $1.66 | |
LTC1542IMS8#PBF | MS-8 | I | $1.98 | $1.50 |
LTC1542IMS8#TRPBF | MS-8 | I | $1.55 | |
LTC1542IS8#PBF | SO-8 | I | $2.55 | $2.15 |
LTC1542IS8#TRPBF | SO-8 | I | $2.21 |