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www.ti.com	THS4631
	SLOS451C – DECEMBER 2004 – REVISED MARCH 2025

6Specifications

6.1Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted)(1)

		MIN	MAX	UNITS
VS	Supply voltage, VS– to VS+		33	V
VI	Input voltage	−VS	+VS	V
IO	Output current		150	mA
	Continuous power dissipation		See Thermal Information

TJ	Junction temperature(2)		150	°C
TA	Operating free-air temperature, continues operation, long-term		125	°C
TA	reliability(2)		125	°C
Tstg	Storage temperature	−65	150	°C

(1)The Absolute Maximum Ratings under any condition is limited by the constraints of the silicon process. Stresses above these ratings can cause permanent damage. Exposure to absolute maximum conditions for extended periods can degrade device reliability. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those specified is not implied.

(2)The maximum junction temperature for continuous operation is limited by package constraints. Operation above this temperature can result in reduced reliability, lifetime of the device, or both.

6.2 ESD Ratings

				VALUE	UNIT
			Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001 (1)	±1000
V(ESD)		Electrostatic discharge	Charged-device model (CDM), per JEDEC specification JESD22-C101(2)	±1500	V
			Machine-model (MM)	±100

(1)	JEDEC document JEP155 states that 500V HBM allows safe manufacturing with a standard ESD control process.
(2)	JEDEC document JEP157 states that 250V CDM allows safe manufacturing with a standard ESD control process.

6.3 Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)

			MIN	MAX	UNITS
VS	Supply Voltage	Dual supply	±5	±15	V

		Single supply	10	30	V
		Single supply	10	30	V

TA	Operating free-air temperature		−40	85	°C

6.4 Thermal Information

			THS4631
	THERMAL METRIC(1)	D (SOIC)	DDA (HSOIC)	DGN (HVSSOP)	UNIT
		8 PINS	8 PINS	8 PINS
RθJA	Junction-to-ambient thermal resistance	95	45.8	58.4	°C/W
RθJC(top)	Junction-to-case (top) thermal resistance	38.3	9.2	4.7	°C/W
RθJB	Junction-to-board thermal resistance	N/A	N/A	N/A	°C/W
ΨJT	Junction-to-top characterization parameter	N/A	N/A	N/A	°C/W
ΨJB	Junction-to-board characterization parameter	N/A	N/A	N/A	°C/W
RθJC(bot)	Junction-to-case (bottom) thermal resistance	N/A	N/A	N/A	°C/W

(1)For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report.

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6.5 Electrical Characteristics

at VS = ±15V, RF = 499Ω, RL = 1kΩ, G = 2, and TA = 25°C (unless otherwise noted)

PARAMETER	TEST CONDITIONS			MIN	TYP	MAX	UNIT
AC PERFORMANCE

	G = 1, RF = 0Ω, VO = 200mVPP				325
Small-signal bandwidth, –3dB	G = 2, RF = 499Ω, VO = 200mVPP				105		MHz
Small-signal bandwidth, –3dB	G = 5, RF = 499Ω, VO = 200mVPP				55		MHz
	G = 5, RF = 499Ω, VO = 200mVPP				55
	G = 10, RF = 499Ω, VO = 200mVPP				25
Gain bandwidth product	G >= 20				210		MHz

0.1dB bandwidth flatness	G = 2, RF = 499Ω, CF = 8.2pF				6		MHz
0.1dB bandwidth flatness	G = 2, RF = 499Ω				20		MHz
	G = 2, RF = 499Ω				20
Large-signal bandwidth	G = 2, RF = 499Ω, VO = 2VPP				105		MHz
	G = 2, RF = 499Ω, VO = 2V step				550
Slew rate	G = 2, RF = 499Ω, VO = 10V step				900		V/µs
	G = 5, RF = 499Ω, VO = 10V step				1000
Rise and fall time	2V step				5		ns

Settling time	0.1%, G = −1, VO = 2V step, CF = 4.7pF				40		ns
Settling time	0.01%, G = −1, VO = 2V step, CF = 4.7pF				190		ns
	0.01%, G = −1, VO = 2V step, CF = 4.7pF				190
Second harmonic distortion	G = 2, VO = 2VPP,	RL = 100Ω			–65		dBc
Second harmonic distortion	f = 5MHz	RL = 1kΩ			–76		dBc
	f = 5MHz	RL = 1kΩ			–76
Third harmonic distortion	G = 2, VO = 2VPP,	RL = 100Ω			–62		dBc
Third harmonic distortion	f = 5MHz	RL = 1kΩ			–94		dBc
	f = 5MHz	RL = 1kΩ			–94
HARMONIC DISTORTION

Input voltage noise	f > 10kHz				7		nV/√		Hz
Input current noise	f > 10kHz				20		fA/√
Input current noise	f > 10kHz				20		fA/√	Hz
DC PERFORMANCE

Open-loop gain	RL = 1kΩ			70	80		dB

		TA	= −40°C to +85°C	65
		TA	= −40°C to +85°C	65
Input offset voltage(1)	VCM = 0V				±260	±500	µV

		TA	= −40°C to +85°C			±2000
		TA	= −40°C to +85°C			±2000
Average offset voltage drift(1)	VCM = 0V, TA = −40°C to +85°C				±2.5	±12	µV/°C
Input bias current	VCM = 0V				±50	±100	pA

		TA	= −40°C to +85°C			±2000
		TA	= −40°C to +85°C			±2000
Input offset current	VCM = 0V				±25	±100	pA

		TA	= −40°C to +85°C			±1000
		TA	= −40°C to +85°C			±1000
INPUT CHARACTERISTICS

Common-mode input voltage, high				11.5	12		V

	TA = −40°C to +85°C			11
	TA = −40°C to +85°C			11
Common-mode input voltage, low					–13	–12.5	V

	TA = −40°C to +85°C					–9
	TA = −40°C to +85°C					–9
Common-mode rejection ratio	VCM = ±10V			86	95		dB

		TA	= −40°C to +85°C	80
		TA	= −40°C to +85°C	80
Differential input impedance					109 \|\| 3.9		Ω \|\| pF
Common-mode input impedance					109 \|\| 3.9		Ω \|\| pF

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	SLOS451C – DECEMBER 2004 – REVISED MARCH 2025

6.5 Electrical Characteristics (continued)

at VS = ±15V, RF = 499Ω, RL = 1kΩ, G = 2, and TA = 25°C (unless otherwise noted)

PARAMETER	TEST CONDITIONS		MIN	TYP	MAX	UNIT
OUTPUT CHARACTERISTICS

	RL = 100Ω		±10	±11

Output voltage swing		TA = −40°C to +85°C	±9.5			V
		TA = −40°C to +85°C	±9.5
	RL = 1kΩ		±13	±13.5
			±13	±13.5

		TA = −40°C to +85°C	±12.8
		TA = −40°C to +85°C	±12.8
Static output current (sourcing)	RL = 20Ω		120	180		mA

		TA = −40°C to +85°C	90
		TA = −40°C to +85°C	90
Static output current (sinking)	RL = 20Ω			–180	–120	mA

		TA = −40°C to +85°C			–90
		TA = −40°C to +85°C			–90
Closed loop output impedance	G = 1, f = 1MHz			0.1		Ω

POWER SUPPLY

Specified operating voltage			±4	±15	±16.5	V

		TA = −40°C to +85°C	±4		±16.5	V
		TA = −40°C to +85°C	±4		±16.5	V
Quiescent current			10	12.5	14.5	mA

		TA = −40°C to +85°C	9		15
		TA = −40°C to +85°C	9		15
Power supply rejection (PSRR +)	VS+ = 15.5V to 14.5V,		85	95		dB
Power supply rejection (PSRR +)	VS– = 15V	TA = −40°C to +85°C	80			dB
	VS– = 15V	TA = −40°C to +85°C	80
Power supply rejection (PSRR –)	VS+ = 15V,		85	95		dB
Power supply rejection (PSRR –)	VS– = −15.5V to −14.5V	TA = −40°C to +85°C	80			dB
	VS– = −15.5V to −14.5V	TA = −40°C to +85°C	80

(1)Input offset voltage is 100% tested at 25°C and is specified by characterization and simulation over the listed temperature range.

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6.6 Typical Characteristics

at VS = ±15V, RF = 499Ω, RL = 1kΩ, G = 2, CF = 0pF, and TA = 25°C (unless otherwise noted)
	6						6
	5	G = 1, RF = 0					5	CF = 0.0pF
		G = 1, RF = 0						CF = 0.0pF
	4	G = 2, RF = 499					4	CF = 5.6pF
(dB)	3	G = 5, RF = 499				(dB)	3	CF = 8.2pF
	3	G = 10, RF = 499					3
		G = 10, RF = 499
	2	G = 100, RF = 499					2
Gain		G = 100, RF = 499				Gain
	1						1

Normalized	0					Normalized	0
	-1						-1
	-2						-2
	-3						-3
	-3						-3
	-4						-4
	-5						-5
	-6						-6
	100k	1M	10M	100M	1G		100k	1M	10M	100M	1G
		Frequency (Hz)						Frequency (Hz)
	G = 100, RF = 11.3kΩ, RG = 115Ω, VOUT = 200mVPP							G = 2, RF = 499Ω, RG = 499Ω, VOUT = 200mVPP
	Figure 6-1. Small-Signal Frequency Response						Figure 6-2. Small-Signal Frequency Response
	0.5						6
	0.4	CF = 0.0pF
	0.3	CF = 8.2pF					3
	0.3
(dB)	0.2					(dB)	0
(dB)						(dB)	0
Gain	0.1					Gain
Gain						Gain
Normalized	0					Normalized	-3
	-0.1
	-0.2						-6
	-0.2
								CF = 0.0pF
	-0.3							CF = 0.0pF
	-0.3						-9	CF = 2.2pF
							-9	CF = 2.2pF
	-0.4							CF = 5.6pF
	-0.4
	-0.5						-12
	100k	1M	10M	100M	1G		100k	1M	10M	100M	1G
		Frequency (Hz)						Frequency (Hz)
								G = –1, RF = 499Ω, RG = 499Ω, VOUT = 200mVPP
		Figure 6-3. 0.1dB Flatness					Figure 6-4. Small-Signal Frequency Response
	6						6
	3						3
(dB)	0					(dB)	0
Gain						Gain
Normalized	-3					Normalized	-3
		VOUT = 0.2VPP
	-6	VOUT = 0.5VPP					-6
		VOUT = 1.0VPP						RISO = 20 , CL	= 100pF
		VOUT = 2.0VPP						RISO = 30 , CL = 56pF
		VOUT = 2.0VPP							= 10pF
	-9	VOUT = 5.0VPP					-9	RISO = 50 , CL	= 10pF
	-9						-9

	-12						-12
	1M	10M		100M	1G		1M	10M	100M		1G
		Frequency (Hz)						Frequency (Hz)
								G = 1, RF = 0Ω
	Figure 6-5. Large-Signal Frequency Response						Figure 6-6. Frequency Response vs Capacitive Load

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	SLOS451C – DECEMBER 2004 – REVISED MARCH 2025

6.6 Typical Characteristics (continued)

at VS = ±15V, RF = 499Ω, RL = 1kΩ, G = 2, CF = 0pF, and TA = 25°C (unless otherwise noted)

	-20
(dB)	-40	RL = 100
Distortion	-40	RL = 1k
		RL = 1k
	-60
OrderHarmonic	-100
	-80
2nd
	-120
	100m	1	10	100
			Frequency (MHz)

VOUT = 2VPP

Figure 6-7. Second-Order Harmonic Distortion vs Frequency

	-40
	-45		HD2, RL = 100
	-45
	-50
(dB)			HD2, RL = 1k


	-55		HD3, RL = 100
	-55		HD3, RL = 100
Distortion	-60		HD3, RL = 1k


	-65
	-65
	-70
	-70
Harmonic	-75
	-75
	-80
	-80
	-85
	-85
Total	-90
	-90
	-95
	-95
	-100
	-100
	-105
	-105
	-110
	0.1	0.2		0.3	0.40.5	0.7	1	2	3	4	5
					Output Voltage (VPP)

Input frequency = 5MHz

Figure 6-9. Harmonic Distortion vs Output-Voltage Swing

	-40
(dB)	-44	RL = 1k


	-48	RL = 100
Distortion		RL = 100


	-56
	-56
Harmonic	-52
	-52
	-60




-Order	-64


	-68


	-72


3rd	-76
3rd

	-80
	-80

1 10 60 Frequency (MHz)

VOUT = 2VPP

Figure 6-8. Third-Order Harmonic Distortion vs Frequency

	1400
	1300	Positive Slew Rate
	1300	Negative Slew Rate
	1200	Negative Slew Rate
	1200
	1100
s)	1000
(V/	1000
(V/	900
Rate	800
	800
Slew	700
Slew	600
	500
	400
	300
	200
	2	4	6	8	10	12	14	16	18	20
				Output Voltage (VPP)
			G = 5, RF = 499Ω, RG = 124Ω
		Figure 6-10. Slew Rate vs Output Voltage
	1000								1000
	500	Voltage Noise							500
	500	Current Noise							500
		Current Noise
	300								300
(nV/vHz)	200								200	(fA/vHz)
(nV/vHz)	100								100	(fA/vHz)
	100								100
Noise	50								50	Noise
Noise	30								30	Noise
	30								30
Voltage	20								20	Current
Voltage	10								10	Current
	10								10
	5								5
	3								3
	2								2
	1								1
	1		10	100		1k	10k		100k
				Frequency (Hz)

Figure 6-11. Open-Loop Gain and Phase vs Frequency

Figure 6-12. Input Voltage and Current Noise vs Frequency

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6.6 Typical Characteristics (continued)

at VS = ±15V, RF = 499Ω, RL = 1kΩ, G = 2, CF = 0pF, and TA = 25°C (unless otherwise noted)
	87											14
	86
	85											13
	85										(mA)
(dB)	84											12
(dB)												12
Open-Loop Gain	83										Quiescent Current
	82											11
	81
	80											10									-40 C
	80																				-40 C
																					25 C
	79																				25 C
	79											9									85 C
																					85 C

	78
	77											8
	-60	-40	-20	0	20	40	60	80	100	120		0	6		12		18		24	30		36
				Temperature ( C)											Supply Voltage (V)
	Figure 6-13. Open-Loop Gain vs Temperature											Figure 6-14. Quiescent Current vs Supply Voltage
												40
												20	D Package
												0	D Package
												0	DDA Package
											V)		DDA Package
											V)	-20	DGN Package
											(	-40
											Voltage	-40
												-60
												-80
											Offset	-80
												-100
												-120
											Input	-120
												-140

												-160
												-180
												-200
												-60	-40	-20	0	20	40	60	80	100	120	140
															Temperature ( C)
	Figure 6-15. Input Bias Current vs Temperature											Figure 6-16. Input Offset Voltage vs Temperature
	13.9											0.1
	13.88												IOUT (Source)
	13.88												IOUT (Sink)
			VOUT Positive									0.101	IOUT (Sink)
	13.86		VOUT Positive								Output Drive Current (mA)	0.101
	13.86		VOUT Negative
			VOUT Negative
Output Voltage (V)	13.84
	13.82											0.102
	13.82
	13.8											0.103
	13.78											0.103
	13.78
	13.76											0.104
												0.104
	13.74
	13.72
	13.72											0.105
												0.105
	13.7
	13.68											0.106
	-60	-40	-20	0	20	40	60	80	100	120		-60	-40	-20	0		20	40	60	80	100	120
				Temperature ( C)												Temperature ( C)
	Figure 6-17. Output Voltage vs Temperature											Figure 6-18. Static Output-Drive Current vs Temperature

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SLOS451C – DECEMBER 2004 – REVISED MARCH 2025

6.6 Typical Characteristics (continued)

at VS = ±15V, RF = 499Ω, RL = 1kΩ, G = 2, CF = 0pF, and TA = 25°C (unless otherwise noted)
	0.3											2
(V)	0.2										(V)	1.5
(V)	0.2										(V)
Response											Response	1
	0.1											0.5
												0.5

Step	0										Step	0
Step											Step
Small-Signal	-0.1										Large-Signal	-0.5
	-0.1
												-1
	-0.2											-1.5


	-0.3											-2
	0	10	20	30	40	50	60	70	80	90		0	20		40		60	80		100	120
					Time (ns)											Time (ns)
				VIN = 100mVPP												VIN = 1VPP
	Figure 6-19. Small-Signal Transient Response											Figure 6-20. Large-Signal Transient Response
												7.5
											Step Response	5
												2.5
												0
											-Signal	-2.5
											Large	-5
												-5
												-7.5
												10	20	30	40	50	60	70	80	90	100
																Time (ns)
					VIN = 5VPP								G = 5, RF = 499Ω, RG = 124Ω, VIN = 2VPP
	Figure 6-21. Large-Signal Transient Response											Figure 6-22. Large-Signal Transient Response
	15											1.5
(V)	10											1
-Signal Step Response	5										Amplitude (V)	0.5
	0											0								Input
																				Output
	-5											-0.5

Large	-10											-1
Large
	-15											-1.5
	10	20	30	40	50	60	70	80	90	100		0	10		20	30	40	50		60	70
					Time (ns)											Time (ns)
		G = 5, RF = 499Ω, RG = 124Ω, VIN = 4VPP													G = –1, CF = 4.7pF
	Figure 6-23. Large-Signal Transient Response													Figure 6-24. Settling Time

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6.6 Typical Characteristics (continued)

at VS = ±15V, RF = 499Ω, RL = 1kΩ, G = 2, CF = 0pF, and TA = 25°C (unless otherwise noted)
	4													110
	3.2												(dB)	100
	2.4												(dB)	90
													Ratio	90

	1.6													80
	1.6
Amplitude (V)	0.8												Mode Rejection	70
	0.8
	0										VIN			60
	0										VIN			50
	-0.8										VOUT			50
	-0.8													40
														40

	-1.6												-
	-1.6												Common	30
														30
	-2.4													20
														20
	-3.2													10
	-4													0
	0	5	10	15	20		25	30	35	40	45	50		-15	-12	-9	-6	-3		0		3	6		9	12	15
						Time (ns)											Common-Mode Voltage (V)
				G = –1, CF = 4.7pF
			Figure 6-25. Settling Time										Figure 6-26. Common-Mode Rejection Ratio vs Input Common-
																	Mode Range
	3.5										35			4												20
	3									Input	30
	2.5									Input	25			3												15
										Output				3												15


	2										20			2												10
	1.5										15	Output Voltage (V)		2												10	Output Voltage (V)
	1.5										15
	1										10			1												5
														1												5
	0.5										5
	0										0			0												0
-0.5											-5
VoltageInput(V)	-1										-10		VoltageInput(V)	-1												-5
	-1										-10
											-15
-1.5											-15			-2												-10
	-2										-20			-2					Input							-10
	-2										-20								Input
-2.5											-25			-3					Output							-15
														-3												-15
	-3										-30
-3.5											-35			-4												-20
	-500 -400		-300	-200 -100		0	100	200	300	400	500			-500 -400 -300		-200	-100		0	100		200	300		400	500
					Time (ns)												Time (ns)
	G = 5, RF = 499Ω, RG = 124Ω, VS = 30V, input frequency =													G = 5, RF = 499Ω, RG = 124Ω, VS = 30V, input frequency =
						1MHz													1MHz
			Figure 6-27. Overdrive Recovery												Figure 6-28. Overdrive Recovery
	120													100
													)	50
Supply and Common-mode													)
	100												Loop Output Impedance (	20
														10
	Rejection Ratio (dB)	80												5
		80
														2
		60												1
		60												0.5
														0.5
		40												0.2
		40												0.1
														0.1
														0.05
		20												0.02
Power			PSRR+										Closed-	0.02
			PSRR+											0.01
			PSRR-											0.01
		0	PSRR-											0.005
		0	CMRR											0.005
														0.002
	-20													0.001
		10	100	1k	10k	100k		1M	10M	100M	1G			10	100	1k	10k		100k		1M	10M		100M		1G	10G
					Frequency(Hz)														Frequency (Hz)
		Figure 6-29. Rejection Ratio vs Frequency												Figure 6-30. Output Impedance vs Frequency

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