TLV9001UIDBVR datasheet(26/86 Pages) TI

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Frequency (Hz)

100

120

140

10M

100M

10G

D035

TLV9001, TLV9002, TLV9004

SBOS833O – OCTOBER 2017 – REVISED APRIL 2020

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Product Folder Links: TLV9001 TLV9002 TLV9004

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8.3 Feature Description

8.3.1 Operating Voltage

The TLV900x family of op amps are for operation from 1.8 V to 5.5 V. In addition, many specifications such as

input offset voltage, quiescent current, offset current, and short circuit current apply from –40°C to 125°C.

Parameters that vary significantly with operating voltages or temperature are shown in the Typical Characteristics

section.

8.3.2 Rail-to-Rail Input

The input common-mode voltage range of the TLV900x family extends 100 mV beyond the supply rails for the

full supply voltage range of 1.8 V to 5.5 V. This performance is achieved with a complementary input stage: an

N-channel input differential pair in parallel with a P-channel differential pair, as shown in the Functional Block

Diagram. The N-channel pair is active for input voltages close to the positive rail, typically (V+) – 1.4 V to 100 mV

above the positive supply, whereas the P-channel pair is active for inputs from 100 mV below the negative

supply to approximately (V+) – 1.4 V. There is a small transition region, typically (V+) – 1.2 V to (V+) – 1 V, in

which both pairs are on. This 100-mV transition region can vary up to 100 mV with process variation. Thus, the

transition region (with both stages on) can range from (V+) – 1.4 V to (V+) – 1.2 V on the low end, and up to

(V+) – 1 V to (V+) – 0.8 V on the high end. Within this transition region, PSRR, CMRR, offset voltage, offset drift,

and THD can degrade compared to device operation outside this region.

8.3.3 Rail-to-Rail Output

Designed as a low-power, low-voltage operational amplifier, the TLV900x family delivers a robust output drive

capability. A class-AB output stage with common-source transistors achieves full rail-to-rail output swing

capability. For resistive loads of 10 kΩ, the output swings to within 20 mV of either supply rail, regardless of the

applied power-supply voltage. Different load conditions change the ability of the amplifier to swing close to the

rails.

8.3.4 EMI Rejection

The TLV900x uses integrated electromagnetic interference (EMI) filtering to reduce the effects of EMI from

sources such as wireless communications and densely-populated boards with a mix of analog signal chain and

digital components. EMI immunity can be improved with circuit design techniques; the TLV900x benefits from

these design improvements. Texas Instruments has developed the ability to accurately measure and quantify the

immunity of an operational amplifier over a broad frequency spectrum extending from 10 MHz to 6 GHz.

Figure 37 shows the results of this testing on the TLV900x. Table 1 shows the EMIRR IN+ values for the

TLV900x at particular frequencies commonly encountered in real-world applications. The EMI Rejection Ratio of

Operational Amplifiers application report contains detailed information on the topic of EMIRR performance as it

relates to op amps and is available for download from www.ti.com.

Figure 37. EMIRR Testing

TLV9001UIDBVR 数据表(PDF) 26 Page - Texas Instruments

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