1 Features

• Low power CMOS amplifier for cost-optimized

applications

• Operational from supply voltage as low as 1.2 V

• Low input bias current: 1-pA typical, 12-pA

maximum

• Low quiescent current: 10 μA/ch

• Low integrated noise of 6.5 μVp-p in 0.1 Hz – 10 Hz

• Rail-to-rail input and output

• High gain bandwidth product: 350 kHz

• Thermal noise floor: 64 nV/√Hz

• Low input offset voltage: ±0.6 mV

• Unity-gain stable

• Robustly drives 100 pF of load capacitance

• Internal RFI and EMI filtered input pins

• Wide specified temperature range: –40°C to 125°C

2 Applications

• Portable electronics

• Wearable fitness and activity monitor

• Headsets/headphones and earbuds

• Personal electronics

• Building automation

• Wearables (non-medical)

• Motion detector (PIR, uWave, etc.)

• Electronic point of sales (EPOS)

• Single-supply, low-side, unidirectional currentsensing

circuit

3 Description

The low-power TLV904x family includes single

(TLV9041), dual (TLV9042), and quad-channel

(TLV9044) ultra-low-voltage (1.2 V to 5.5 V)

operational amplifiers (op-amps) with rail-to-rail input

and output swing capabilities. The TLV904x enables

power savings both with its low quiescent current

(10 μA, typ.) and the ability to operate at supply

voltages as low as 1.2 V, making it one of the few

amplifiers in the industry capable of 1.5-V coin cell

applications. Further power savings can be achieved

using the shutdown mode (TLV9041S, TLV9042S,

and TLV9044S) that allows the amplifiers to be

switched off and enter into a standby mode with

typical current consumption of less than 150 nA.

These devices offer a cost-effective amplifier solution

for power and space-constrained applications such

as battery-powered IoT devices, wearable electronics,

and personal electronics where low-voltage operation

is crucial.

The robust design of the TLV904x family simplifies

circuit design. These op-amps feature an integrated

RFI and EMI rejection filter, unity-gain stability, and

no-phase reversal in input overdrive conditions. The

device also delivers excellent AC performance with

a gain bandwidth of 350 kHz and a high cap load

drive of 100 pF, enabling designers to achieve both

improved performance and lower power consumption.

Space-saving micro-size packages, such as X2QFN

and WSON, are offered for all channel variants

(single, dual, and quad), along with industry-standard

packages such as SOIC, VSSOP, TSSOP, and

SOT-23 packages.