Product Details

describe:

The THS4561 fully differential amplifier (FDA) provides a simple interface from a single-ended source to the differential output required by a precision analog-to-digital converter (ADC). The THS4561 is designed for very low 8Hz, 1/f voltage noise angle and low total harmonic distortion (THD) of 130dB, while consuming only 775μA quiescent current, making it ideal for power-sensitive data acquisition (DAQ) that requires an AFE1105E amplifier and The combination of ADCs enables a high-performance system with the best signal-to-noise ratio (SNR) and spurious-free dynamic range (SFDR).

The THS4561 has the required negative rail input when connecting a DC-coupled, ground-centered source signal to a single-supply, differential input ADC. Low DC error and drift terms support emerging high-speed and high-resolution successive approximation register (SAR) and delta-sigma (ΔΣ) ADC input requirements. The 2.85V to 12.6V supply range and flexible output common-mode settings provide low supply headroom to support a wide range of ADC input and digital-to-analog converter (DAC) output requirements.

The operating temperature range of the THS4561 device is –40°C to +125°C.

characteristic:

Bandwidth: 60 MHz (G = 1 V/V)

● Slew rate: 230 V/μs

●Gain Bandwidth Product: 68 MHz

●Voltage noise:

○1/f voltage noise angle: 8 Hz

○Broadband noise (≥ 500 Hz): 4 nV/√ Hz

●Input offset: ±250 μV (max)

○Drift: ±4 μV/°C (max)

●Power supply operating range: 2.85V to 12.6V

●Supply current: 775 μA

●Negative rail input (NRI)

● Rail-to-rail output (RRO)

●Extremely low harmonic distortion:

○ HD2: –117 dBc at 2 V PP, 100 kHz

○ HD3: –124 dBc at 2 V PP, 100 kHz

0.01% stable (2V step): 90 ns

parameter:

Number of channels (#): 1

Total supply voltage (Min) (+5V=5, +/-5V=10): 2.85

Total supply voltage (max) (+5V=5, +/-5V=10): 12.6

Bandwidth @Acl (MHz): 60

Acl, Minimum Spec Gain (V/V): 1

Slew rate (typ) (V/us): 230

Architecture: Fully Differential ADC Driver, Bipolar

Flat Band Vn (Typ) (nV/rtHz): 4

Iq (Typ) (mA) per channel: 0.78

Rail to Rail: Input to V-, Output

Vos (offset voltage @ 25 C) (max) (mV): 0.25

Operating temperature range (°C): -40 to 125

Output Current (Typical) (mA): 27

Second harmonic (dBc): 117

Third harmonic (dBc): 124

GBW (typ) (MHz): 60

Input Bias Current (Max) (pA): 600000

Features: off

CMRR (typ.) (dB): 110