1 Features

• Bandwidth: 60MHz (G = 1V/V)

• Gain bandwidth product: 80MHz

• External gain options:

– THS4535A offset voltage: 50μV (max)

– THS4535A offset drift: 1μV/°C (max)

– THS4535 offset voltage: 2mV (max)

– THS4535 offset drift: 2μV/°C (max)

• Internal gain options:

– Available gains: 0.5, 1, 2, 5

– CMRR: 129dB, 126dB, 123dB, 117dB

– Gain error nonlinearity: 5, 4, 3, 1ppm

– Gain error drift: 0.03, 0.03, 0.015, 0.005ppm/°C

• Supply operating range: 2.7V to 5.5V

• Low harmonic distortion:

– HD2: 124dBc at 2VPP, 10kHz

– HD3: 115dBc at 2VPP, 10kHz

• Slew rate: 50V/μs

• Low noise: 3.6nV/√Hz (10kHz)

– 1/f voltage noise corner: 2.5kHz

• Supply current: 4.7mA

• Negative rail input (NRI)

• Rail-to-rail output (RRO)

• Temperature range: −40°C to +125°C

2 Applications

• 16-bit to 20-bit, differential, SAR and ΔΣ drivers

• Differential active filters

• Motor drives

• Battery testers

• Power analyzers

3 Description

The THS4535 is a 60MHz fully differential amplifier

(FDA) that is specifically designed to drive fully

differential analog-to-digital converters (ADCs) up to

2MSPS. The THS4535 family offers multiple options:

THS4535 (untrimmed external gain), THS4535A

(trimmed external gain), and THS4535Axx (trimmed

internal gain).

The THS4535 is an excellent choice for simple singleto-

dual conversions. FDAs such as the THS4535

offer performance benefits over traditional dual

op amps, including bandwidth and phase balance

between outputs and a VOCM pin to easily adjust

the output common-mode voltage. For higher dc

precision applications, such as high-speed low-side

current shunt measurements, the THS4535A provides

package level trim for offset and offset drift.

THS4535A also provides higher transient current

output drive to meet the needs of successive

approximation register (SAR) ADC charge injection

and delta-sigma (ΔΣ) ADC precharge buffers.

The THS4535Axx, with integrated SiCr resistors,

is designed for data acquisition systems (DAQ)

that require complete system-level precision. The

THS4535Axx integrated resistors are specifically

designed to minimize system level gain-error

and CMRR over temperature and time.

These temperature-stability and long-term-stability

performance parameters, along with low signal-tonoise

ratio (SNR) and low total harmonic distortion

(THD), make the THS4535Axx an excellent choice for

DAQ systems.