The TLV854x ultra-low-power operational amplifiers (op amps) are intended for cost-optimized sensing applications in wireless and low-power wired equipment. The TLV854x family of op amps minimize power consumption in equipment such as motion detecting security systems (like microwave and PIR motion sensing) where operational battery life is critical. They also have a carefully designed CMOS input stage, enabling very low, femto-ampere bias currents, thereby reducing IBIAS and IOS errors that would otherwise impact sensitive applications. Examples of these include transimpedance amplifier (TIA) configurations with megaohm feedback resistors, and high source impedance sensing applications. Additionally, built-in EMI protection reduces sensitivity to unwanted RF signals from sources such as mobile phones, WiFi, radio transmitters and tab readers.
PART NUMBER | PACKAGE | BODY SIZE |
---|---|---|
TLV8544 | TSSOP (14) | 5.00 mm × 4.40 mm |
SOIC (14) | 8.65 mm × 3.91 mm | |
TLV8542 | SOIC (8) | 4.9 mm × 3.90 mm |
X2QFN (8) | 1.50 mm × 1.50 mm | |
TLV8541 | SOT-23 (5) | 2.90 mm x 1.60 mm |
Changes from D Revision (November 2017) to E Revision
Changes from C Revision (October 2017) to D Revision
Changes from B Revision (June 2017) to C Revision
Changes from A Revision (March 2017) to B Revision
Changes from * Revision (December 2016) to A Revision
The TLV854x op amps operates with a single supply voltage down to 1.7 V supply, providing continuous performance in low battery situations over the extended temperature range of –40°C to +125°C. All versions are specified for operation from –40°C to 125°C. The TLV8541 (single version) is available in the 5-pin SOT-23 while the TLV8542 (dual version) is available in the 8-pin SOIC package. The 4-channel TLV8544 (quad version) is available in the industry standard 14-pin TSSOP package.
PIN | I/O | DESCRIPTION | ||
---|---|---|---|---|
NUMBER | NAME | |||
1 | OUT | O | Output | |
2 | V– | P | Negative (lowest) power supply | |
3 | +IN | I | Non-Inverting Input | |
4 | –IN | I | Inverting Input | |
5 | V+ | P | Positive (highest) power supply |
PIN | I/O | DESCRIPTION | ||
---|---|---|---|---|
NUMBER | NAME | |||
1 | OUT A | O | Channel A Output | |
2 | –IN A | I | Channel A Inverting Input | |
3 | +IN A | I | Channel A Non-Inverting Input | |
4 | V– | P | Negative (lowest) power supply | |
5 | +IN B | I | Channel B Non-Inverting Input | |
6 | –IN B | I | Channel B Inverting Input | |
7 | OUT B | O | Channel B Output | |
8 | V+ | P | Positive (highest) power supply |
PIN | I/O | DESCRIPTION | ||
---|---|---|---|---|
NUMBER | NAME | |||
1 | OUTA | O | Channel A output | |
2 | –INA | I | Channel A inverting input | |
3 | +INA | I | Channel A non-inverting input | |
4 | V+ | P | Positive (highest) power supply | |
5 | +INB | I | Channel B non-inverting input | |
6 | –INB | I | Channel B inverting input | |
7 | OUTB | O | Channel B output | |
8 | OUTC | O | Channel C output | |
9 | –INC | I | Channel C inverting input | |
10 | +INC | I | Channel C non-inverting input | |
11 | V– | P | Negative (lowest) power supply | |
12 | +IND | I | Channel D non-inverting input | |
13 | –IND | I | Channel D inverting input | |
14 | OUTD | O | Channel D output |
MIN | MAX | UNIT | |||
---|---|---|---|---|---|
Supply voltage, Vs = (V+) – (V–) | –0.3 | 4 | V | ||
Input pins | Voltage | Common mode | (V–) – 0.3 | (V+) + 0.3 | V |
Differential | (V–) – 0.3 | (V+) + 0.3 | V | ||
Input pins | Current | –10 | 10 | mA | |
Output short current(4) | Continuous | Continuous | |||
Operating ambient temperature | –40 | 125 | °C | ||
Storage temperature, Tstg | –65 | 150 | °C | ||
Junction temperature | 150 | °C |
VALUE | UNIT | |||
---|---|---|---|---|
V(ESD) | Electrostatic discharge | Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001(1) | ±1000 | V |
Charged-device model (CDM), per JEDEC specification JESD22-C101(2) | ±250 |
MIN | NOM | MAX | UNIT | ||
---|---|---|---|---|---|
Supply voltage (V+ – V–) | 1.7 | 3.6 | V | ||
Specified ambient temperature | –40 | 125 | °C |
THERMAL METRIC(1) | TLV8544 | TLV8542 | TLV8541 | UNIT | |||
---|---|---|---|---|---|---|---|
PW (TSSOP) | D
(SOIC) |
D
(SOIC) |
RUG (X2QFN) | DBV (SOT-23) | |||
14 PINS | 14 PINS | 8 PINS | 8 PINS | 5 PINS | |||
RθJA | Junction-to-ambient thermal resistance | 124.5 | 104.1 | 141.6 | 188.3 | 244.6 | °C/W |
RθJC(top) | Junction-to-case (top) thermal resistance | 52.7 | 61.5 | 85.7 | 88.9 | 127.3 | °C/W |
RθJB | Junction-to-board thermal resistance | 66.2 | 59.9 | 84.7 | 100.2 | 79.4 | °C/W |
ψJT | Junction-to-top characterization parameter | 7.3 | 22.9 | 36.3 | 3.9 | 44.1 | °C/W |
ψJB | Junction-to-board characterization parameter | 65.7 | 59.5 | 84.0 | 100.3 | 78.8 | °C/W |
RθJC(bot) | Junction-to-case (bottom) thermal resistance | N/A | N/A | N/A | N/A | N/A | °C/W |
PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | |
---|---|---|---|---|---|---|
OFFSET VOLTAGE | ||||||
VOS | Input offset voltage | VCM = V– , VS = 1.8 V and 3.3 V | –3.1 | See Plots | 3.1 | mV |
VCM = V+, VS = 1.8 V and 3.3 V | –3.4 | See Plots | 3.4 | |||
dVOS/dT | Input offset drift | VCM = V–, TA = –40°C to 125°C | 0.8 | µV/°C | ||
PSRR | Power-supply rejection ratio | VCM = V– , VS =1.8 V and 3.3 V | 66 | 90 | dB | |
INPUT VOLTAGE RANGE | ||||||
VCM | Common-mode voltage range | VS = 3.3 V | 0 | 3.3 | V | |
CMRR | Common-mode rejection ratio | (V–) ≤ VCM ≤ (V+), Vs = 3.3 V | 60 | 80 | dB | |
(V–) ≤ VCM ≤ (V+) – 1.2 V | 90 | |||||
INPUT BIAS CURRENT | ||||||
IB | Input bias current | 100 | fA | |||
IOS | Input offset current | 100 | fA | |||
INPUT IMPEDANCE | ||||||
Differential | 2 | pF | ||||
Common mode | 4 | pF | ||||
NOISE | ||||||
En | Input voltage noise | ƒ = 0.1 Hz to 10 Hz | 8.6 | µVp–p | ||
en | Input voltage noise density | ƒ = 1 kHz | 264 | nV/√Hz | ||
OPEN-LOOP GAIN | ||||||
AOL | Open-loop voltage gain | (V–) + 0.3 V ≤ VO ≤ (V+) – 0.3 V, RL = 100 kΩ to V+/2 | 120 | dB | ||
OUTPUT | ||||||
VOH | Voltage output swing from positive rail | RL = 100 kΩ to V+/2, VS = 3.3 V | 12 | mV | ||
VOL | Voltage output swing from negative rail | RL = 100 kΩ to V+/2, VS = 3.3 V | 12 | mV | ||
ISC | Short-circuit current | Sourcing, VO to V–, VIN(diff) = 100 mV, VS = 3.3 V | 15 | mA | ||
Sinking, VO to V+, VIN(diff) = –100 mV, VS = 3.3 V | 30 | |||||
ZO | Open loop output impedance | ƒ = 1 kHz, IO = 0 mA | 8 | kΩ | ||
FREQUENCY RESPONSE | ||||||
GBP | Gain-bandwidth product | CL = 20 pF, RL = 10 MΩ | 8 | kHz | ||
SR | Slew rate (10% to 90%) | G = 1, rising edge, CL = 20 pF | 3.5 | V/ms | ||
G = 1, falling edge, CL = 20 pF | 4.5 | |||||
POWER SUPPLY | ||||||
IQ–TLV8541 | Quiescent Current | VCM = V–, IO = 0 mA, VS = 3.3 V | 550 | 640 | nA | |
IQ–TLV8542 | Quiescent Current, per channel | VCM = V–, IO = 0 mA, VS = 3.3 V | 550 | 640 | nA | |
IQ–TLV8544 | Quiescent current, per channel | VCM = V–, IO = 0 mA, VS = 3.3 V | 500 | 640 | nA |
VS = 1.8 V | VCM = V+ | Data from 1500 4-channel devices |
VS = 3.3 V | VCM = V+ | Data from 1500 4-channel devices |
VS = 1.8 V | TA = –40, 25, 125°C | Per Channel |
VS = 1.8 V | TA = –40, 25, 125°C | |
VS = 1.6 to 3.6V | TA = –40, 25, 125°C | VCM = V- |
VS= 3.3V | TA = 25°C | VCM = V– |
VS = 3.3 V | TA = –40, 25, 125°C | |
VS = 3.3 V | TA = –40, 25, 125°C | |
VS = 3.3 V | TA = –40°C | |
VS = 3.3 V | TA = 25°C | |
VS = 3.3 V | TA = 125°C | |
VS = 3.3 V | TA = 25°C | |
VS = 3.3 V | TA = 25°C | |
AV = 1 |
VS = 3.3 V | TA = 25 °C | CL = 50 pF |
VIN = 1.65 ± 0.1 V | AV = 1 |
VS = 3.3 V | TA = 25°C | CL = 50 pF |
VIN = 1.65 ± 1 V | AV = 1 |
VS = 1.8 V | VCM = V– | Data from 1500 4-channel devices |
VS = 3.3 V | VCM = V– | Data from 1500 4-channel devices |
VS = 3.3 V | TA = –40, 25, 125°C | Per Channel |
VS = 3.3 V | TA = –40, 25, 125°C | |
VS= 3.3V | TA = 25°C | |
VS = 1.8 V | TA = –40, 25, 125°C | |
VS = 1.8 V | TA = –40, 25, 125°C | |
VS = 1.8 V | TA = –40°C | |
VS = 1.8 V | TA = 25°C | |
VS= 1.8V | TA = 125°C | |
VS = 3.3 V | TA = –40, 25, 125°C | CL = 50 pF |
VS = 3.3 V | TA = 25°C | |
VS = 1.8 V | TA = 25°C | CL = 50 pF |
VIN = 0.9 ± 0.1 V | AV = 1 |
VS = 1.8 V | TA = 25°C | CL = 50 pF |
VIN = 0.9 ± 0.5 V | AV = 1 |
The TLV854x amplifiers are unity-gain stable and can operate on a single supply, making them highly versatile and easy to use.
Parameters that vary significantly with operating voltages or temperature are shown in the Typical Characteristics curves.
The differential inputs of the TLV854x device consist of a non-inverting input (+IN) and an inverting input (–IN). The device amplifies only the difference in voltage between the two inputs, which is called the differential input voltage. The output voltage of the op-amps VOUT are given by Equation 1:
where
The input common-mode voltage range of the TLV854x extends to the supply rails. This is achieved with a complementary input stage — an N-channel input differential pair in parallel with a P-channel differential pair. The N-channel pair is active for input voltages close to the positive rail, typically (V+) – 800 mV to 200 mV above the positive supply, while the P-channel pair is on for inputs from 300 mV below the negative supply to approximately (V+) – 800 mV. There is a small transition region, typically (V+) – 1.2 V to (V+) – 0.8 V, in which both pairs are on. This 400-mV transition region can vary 200 mV with process variation. Within the 400-mV transition region PSRR, CMRR, offset voltage, offset drift, and THD may be degraded compared to operation outside this region.
Because of the ultra-low supply current, changes in common mode voltages cause a noticeable change in the supply current as the input stages transition through the transition region, as shown in Figure 30.
For the lowest supply current operation, keep the input common mode range between V– and 1 V below V+.
In most applications, operation is within the range of only one differential pair. However, some applications can subject the amplifier to a common-mode signal in the transition region. Under this condition, the inherent mismatch between the two differential pairs may lead to degradation of the CMRR and THD. The unity-gain buffer configuration is the most problematic as it traverses through the transition region if a sufficiently wide input swing is required.