THS4561 Low Power, 70MHz, High Supply Range, Fully Differential Amplifier

Sample Availability

Prototype samples are available (XTHS4561IDGKR). Request now

Prototype samples are available (XTHS4561IRGT). Request now

Description

The THS4561 fully differential amplifier (FDA) offers a simple interface from single-ended sources to the differential output required by high-precision analog-to-digital converters (ADCs). Designed for exceptional dc accuracy, low noise, and ultra-low harmonic distortion, the device is well suited for data acquisition systems where high precision is required with the best signal-to-noise ratio (SNR) and spurious-free dynamic range (SFDR) through the amplifier and ADC combination.

The THS4561 features the required negative rail input when interfacing a dc-coupled, ground-centered, source signal to a single-supply, differential-input ADC. Very low dc error and drift terms support the emerging 16-bit to 20-bit successive approximation register (SAR) input requirements. A 2.85-V to 12.6-V supply range with a flexible output common-mode setting with low headroom to the supplies supports a wide range of ADC input and digital-to-analog converter (DAC) output requirements.

The THS4561 will be available in a dual-channel device as the THS4562 in a VQFN-24 package.

Features

Bandwidth: 70 MHz (G = 1 V/V)
Differential Output Slew Rate: 130 V/µs
Gain Bandwidth Product: 60 MHz
Negative Rail Input (NRI)
Rail-to-Rail Output (RRO)
Wide Output Common-Mode Control Range
Single-Supply Operating Range: 2.85 V to 12.6 V
Trimmed-Supply Current: 830 µA at ±5 V
25°C Input Offset: ±200 µV (Maximum)
Input Offset Voltage Drift: ±2 µV/°C (Maximum)
Differential Input Voltage Noise: 4.5 nV/√Hz
Very Low 50–Hz 1/f Voltage Noise Corner
Very Low Harmonic Distortion
- HD2: –115 dBc at 2-V_PP, 100-kHz
- HD3: –110 dBc at 2-V_PP, 100-kHz
< 4-V Step Response Settling to 0.01%: < 100 ns

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Parametrics

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Part number	Order	Number of channels (#)	Total supply voltage (Min) (+5V=5, +/-5V=10)	Total supply voltage (Max) (+5V=5, +/-5V=10)	BW @ Acl (MHz)	Acl, min spec gain (V/V)	Slew rate (Typ) (V/us)	Vn at flatband (Typ) (nV/rtHz)	Iq per channel (Typ) (mA)	Rail-to-rail	Vos (offset voltage @ 25 C) (Max) (mV)	Operating temperature range (C)	Package Group	Output current (Typ) (mA)	2nd harmonic (dBc)	3rd harmonic (dBc)	Package size: mm2:W x L (PKG)	GBW (Typ) (MHz)	Input bias current (Max) (pA)	@ MHz	CMRR (Typ) (dB)
THS4561	Order now	1	2.85	12.6	70	1	130	5	0.82	In to V- Out	0.2	-40 to 125	VSSOP \| 8	35	110	115	8VSSOP: 15 mm2: 4.9 x 3 (VSSOP \| 8)	60	200000		110
THS4531A	Order now	1	2.5	5.5	36	1	220	10	0.25	In to V- Out	0.4	-40 to 125	QFN \| 10 SOIC \| 8 VSSOP \| 8	26	129	138	10QFN: 4 mm2: 2 x 2 (QFN \| 10) 8SOIC: 19 mm2: 3.91 x 4.9 (SOIC \| 8) 8VSSOP: 15 mm2: 4.9 x 3 (VSSOP \| 8)	27	250000	0.001	116
THS4541	Order now	1	2.7	5.4	620	1	1500	2.2	10.1	In to V- Out	0.45	-40 to 125	QFN \| 10 VQFN \| 16	100	140	140	10QFN: 4 mm2: 2 x 2 (QFN \| 10) 16VQFN: 9 mm2: 3 x 3 (VQFN \| 16)	850	13000000	0.1	100
THS4551	Order now	1	2.7	5.4	150	1	220	3.3	1.35	In to V- Out	0.175	-40 to 125	QFN \| 10 VQFN \| 16

THS4561 PREVIEW This product is prototype/experimental and has not been released to the market. Testing and final processes may not be complete. This product may be subject to further changes or possible discontinuation Low Power, 70MHz, High Supply Range, Fully Differential Amplifier

Sample Availability

Description

Features

Parametrics

THS4561
PREVIEW

This product is prototype/experimental and has not been released to the market. Testing and final processes may not be complete. This product may be subject to further changes or possible discontinuation

Low Power, 70MHz, High Supply Range, Fully Differential Amplifier