TEXAS INSTRUMENTS THS3112, THS3115 Technical data

查询THS3112供应商

LOW-NOISE, HIGH-SPEED CURRENT FEEDBACK AMPLIFIERS

THS3112
THS3115

SLOS385 – SEPTEMBER 2001

FEATURES

Low Noise

D

– 2.9 pA/√Hz
– 10.8 pA/√Hz
– 2.2 nV/√Hz

Noninverting Current Noise

Inverting Current Noise

Voltage Noise

D Wide Supply Voltage Range ±5 V to ±15 V
D Wide Output Swing

– 25 V

Supply

Output Voltage, R

PP

= 100 Ω, ±15-V

L

D High Output Current, 150 mA (Min)
D High Speed

– 110 MHz (–3 dB, G=1, ±15 V)
– 1550 V/µs Slew Rate (G = 2, ±15 V)

D Low Distortion, G = 2

– -78 dBc (1 MHz, 2 V

, 100-Ω load)

PP

D Low Power Shutdown (THS3115)

– 300-µA Shutdown Quiescent Current Per

Channel

D Thermal Shutdown and Short Circuit

Protection

D Standard SOIC, SOIC PowerP AD , and

TSSOP PowerP AD Package

D Evaluation Module Available

APPLICATIONS

Communication Equipment

D
D Video Distribution
D Motor Drivers
D Piezo Drivers

DESCRIPTION

The THS3112/5 are low-noise, high-speed current
feedback amplifiers, ideal for any application requiring
high output current. The low noninverting current noise
of 2.9 pA/√Hz
pA/√Hz
signal resolution. The THS3112/5 can operate from
±5-V to ±15-V supply voltages, while drawing as little as

4.5 mA of supply current per channel. It offers low
–78-dBc total harmonic distortion driving 2 V
100-Ω load. The THS3115 features a low power
shutdown mode, consuming only 300-µA shutdown
quiescent current per channel. The THS3112/5 is
packaged in a standard SOIC, SOIC PowerP AD, and
TSSOP PowerPAD packages.

and the low inverting current noise of 10.8

increase signal to noise ratios for enhanced

into a

PP

VOLTAGE NOISE AND CURRENT NOISE

100

Hz

Hz

nV/

pA/

10

– Voltage Noise –

– Current Noise –

n

I

V

PowerPAD is a trademark of Texas Instruments.

PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.

V

n

n

1

10

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

vs

FREQUENCY

VCC = ±5 V to ±15 V
TA = 25°C

I

n–

I

n+

100

1 K

f – Frequency – Hz

10 K

100 K

THS3112

SOIC (D) AND

SOIC PowerPAD

(TOP VIEW)

1 OUT

1 IN–
1 IN+
V

CC–

1
2
3
4

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 (DDA) PACKAGE

V

8
7
6
5

CC+

2 OUT
2 IN–
2 IN+

THS3115

1 OUT

1 IN–
1 IN+
V

CC–

N/C

GND

N/C

SOIC (D) AND

(TOP VIEW)

1

14

2

13

3

12

4

11

5

10
6
7

9
8

V

CC+

2 OUT
2 IN–
2 IN+
N/C
SHUTDOWN
N/C

TSSOP PowerPAD (PWP) PACKAGE

Copyright  2001, Texas Instruments Incorporated

1

THS3112

THS3112EVM

THS3115

SLOS385 – SEPTEMBER 2001

T

A

0°C to 70°C THS3112CD THS3112CDDA THS3115CD THS3115CPWP

–40°C to 85°C THS3112ID THS3112IDDA THS3115ID THS3115IPWP

SOIC-8

(D)

AVAILABLE OPTIONS

PACKAGED DEVICE

SOIC-8 PowerPAD

(DDA)

SOIC-14

(D)

TSSOP-14

(PWP)

EVALUATION

MODULES

THS3112EVM
THS3115EVM

absolute maximum ratings over operating free-air temperature (unless otherwise noted)

Supply voltage, V
Input voltage ± V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CC+

to V

CC–

†

33 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CC

Output current (see Note 1) 275 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Differential input voltage ± 4 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Maximum junction temperature 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Total power dissipation at (or below) 25°C free-air temperature See Dissipation Ratings Table. . . . . . . . . . .

Operating free-air temperature, T

: Commercial 0°C to 70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

A

Industrial –40°C to 85°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Storage temperature, T

: Commercial –65°C to 125°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

stg

Industrial –65°C to 125°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds 300°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

†

Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTE 1: The THS3112 and THS31 15 may incorporate a PowerP AD on the underside of the chip. This acts as a heatsink and must be connected

to a thermally dissipating plane for proper power dissipation. Failure to do so may result in exceeding the maximum junction temperature
which could permanently damage the device. See TI Technical Brief SLMA002 for more information about utilizing the PowerPAD
thermally enhanced package.

DISSIPATION RATING TABLE

PACKAGE

D-8 95°C/W
DDA 67°C/W 1.87 W
D-14 66.6°C/W
PWP 37.5°C/W 3.3 W

‡

This data was taken using the JEDEC proposed high-K test PCB.
For the JEDEC low-K test PCB, the θJA is168°C/W for the D-8
package and 122.3°C/W for the D-14 package.

θ

JA

‡

‡

TA = 25°C

POWER RATING

1.32 W

1.88 W



recommended operating conditions

Supply voltage, V

Operating free-air temperature, T

Shutdown pin input levels, relative to the GND pin

2

CC+

to V

CC–

MIN NOM MAX UNIT

Dual supply ±5 ±15
Single supply 10 30

A

C-suffix 0 70
I-suffix –40 85
High level (device shutdown) 2
Low level (device active) 0.8

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V

°C

V

R

F

kΩ,

R

F

750 Ω,

R

F

750 Ω,

SR

Slew rate (see Note 2), G8

R

680 Ω

V/µs

G 2, R

F

680 Ω,

G 2, R

F

680 Ω,

G = 2

f = 1 MHz

G

R

150 Ω

40 IRE modulation

THS3112
THS3115

SLOS385 – SEPTEMBER 2001

electrical characteristics over recommended operating free-air temperature range, TA = 25°C,

= ±15 V, RF = 750 Ω, RL = 100 Ω (unless otherwise noted)

V

CC

dynamic performance

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

RF = 1 kΩ,

RL = 100 Ω

Small-signal bandwidth (–3 dB)

BW RL = 100 Ω

Bandwidth (0.1 dB)

SR Slew rate (see Note 2), G=8

t

s

NOTE 2: Slew rate is defined from the 25% to the 75% output levels.

Settling time to 0.1%

G = 2

=

F

G = –1

1

G = 1
RF = 750 Ω,

G = 2
RF = 750 Ω,

G = 2
VO = 10 V

VO = 5 V
VO = 2 V

VO = 5 V

noise/distortion performance

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

G = 2, RF = 680 Ω,
VCC = ±15 V, f = 1 MHz

THD Total harmonic distortion

V

n

I

n

Input voltage noise VCC = ±5 V, ±15 V f = 10 kHz 2.2 nV/√Hz

Input current noise

Crosstalk

Differential gain error

Differential phase error

Noninverting Input
Inverting Input

G = 2, RF = 680 Ω,
VCC = ±5 V, f = 1 MHz

VCC = ±5 V, ±15 V f = 10 kHz

G = 2, f = 1 MHz,

,

VO = 2 Vpp

= 2,
40 IRE modulation
±100 IRE Ramp
NTSC and PAL

PP
PP

PP

PP

L

=

VCC = ±5 V 95
VCC = ±15 V 110
VCC = ±5 V 103
VCC = ±15 V 110
VCC = ±5 V 25
VCC = ±15 V 48
VCC = ±15 V 1550
VCC = ±5 V 820
VCC = ±15 V 1300
VCC = ±5 V 50

VCC = ±15 V 63

V

= 2 V –78

O(PP)

V

= 8 V –75

O(PP)

V

= 2 V –76

O(PP)

V

= 6 V –74

O(PP)

VCC = ±5 V –67

,

VCC = ±15 V –67
VCC = ±5 V 0.01%
VCC = ±15 V 0.01%
VCC = ±5 V 0.011°
VCC = ±15 V 0.011°

2.9

10.8

MHz

V/µs

dBc

pA/√Hz

dBc

ns

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3

THS3112

V

IO

V

±15 V

V

CC

CC

V

CC

V

CC

±15 V

V

±5 V

V

±15 V

THS3115

SLOS385 – SEPTEMBER 2001

electrical characteristics over recommended operating free-air temperature range, TA = 25°C,

= ±15 V, RF = 750 Ω, RL = 100 Ω (unless otherwise noted) (continued)

V

CC

dc performance

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

Input offset voltage

V

IO

I

IB

Z

OL

Channel offset voltage matching
Offset drift TA = full range 10 µV/°C

– Input bias current

+ Input bias current

Input offset current

Open loop transimpedance

VCC = ±5 V,

=

CC

V

= ±5 V,

= ±5 V,

VCC = ±15 V

VCC = ±5 V,
VCC = ±15 V

TA = 25°C 3 8
TA = full range 13
TA = 25°C 1 3
TA = full range 4

TA = 25°C 23
TA = full range 30
TA = 25°C 0.33 2
TA = full range 3
TA = 25°C 4 22
TA = full range 30

RL = 1 kΩ, 1 MΩ

mV

µA

input characteristics

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

V

ICR

CMRR Common-mode rejection ratio

R

I

C

i

Input common-mode voltage range

Input resistance
Input capacitance 2 pF

output characteristics

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

V

O

I

O

r

o

Output voltage swing

Output current drive

Output resistance open loop 14 Ω

G = 4, VI = 1 V,

=

CC

G = 4, VI = 3.4 V,

=

CC

G = 4, VI = 1.025 V,
VCC = ±5 V

G = 4, VI = 3.4 V,
VCC = ±15 V

VCC = ±5 V
VCC = ±15 V
V

= ±5 V,

= ±5 V,

VI = –2.5 V to 2.5 V

= ±15 V,

=

V
VI = –12.5 V to 12.5 V

+ Input 1.5 MΩ
– Input

,

RL = 1 kΩ, TA = 25°C 3.9

RL = 100 Ω,
RL = 1 kΩ, TA = 25°C 13.5

RL = 100 Ω,

RL = 25 Ω,

RL = 25 Ω,

TA = full range
TA = 25°C 56 62

TA = full range 54
TA = 25°C 63 67
TA = full range 60

TA = 25°C 3.6 3.8
TA = full range 3.4

TA = 25°C 12.2 13.3
TA = full range 12

TA = 25°C

±2.5 ±2.7

±12.5 ±12.7

15 Ω

100 130

175 270

V

dB

V

mA

4

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THS3112
THS3115

SLOS385 – SEPTEMBER 2001

electrical characteristics over recommended operating free-air temperature range, TA = 25°C,

= ±15 V, RF = 750 Ω, RL = 100 Ω, GND = 0 V (unless otherwise noted) (continued)

V

CC

power supply

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

VCC = ±5 V

I

CC

PSRR Power supply rejection ratio

Quiescent current (per amplifier)

VCC = ±15 V

VCC = ±5 V

VCC = ±15 V

shutdown characteristics (THS3115 only)

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

I

CC(SHDN)

t

DIS

t

EN

I

IL(SHDN)

I

IH(SHDN)

NOTE 3: Disable/enable time is defined as the time from when the shutdown signal is applied to the SHDN pin to when the supply current has

Shutdown quiescent current (per channel) V
Disable time (see Note 3) VCC = ±15 V 0.1 µs
Enable time (see Note 3) VCC = ±15 V 0.4 µs
Shutdown pin input bias current for power up VCC = ±5 V, ±15 V, V

Shutdown pin input bias current for power down VCC = ±5 V, ±15 V, V

reached half of its final value.

= 0 V, VCC = ±5 V, ±15 V 0.3 0.45 mA

GND

TA = 25°C 4.4 5.5
TA = full range 6
TA = 25°C 4.9 6.5
TA = full range 7.5
TA = 25°C 53 60
TA = full range 50
TA = 25°C 68 74
TA = full range 66

= 0 V 18 25 µA

(SHDN)

= 3.3 V 110 130 µA

(SHDN)

mA

dB

TYPICAL CHARACTERISTICS

Table of Graphs

FIGURE

Small signal closed loop gain vs Frequency 1 – 11, 13, 14
Gain and phase vs Frequency 12
Small signal closed loop noninverting gain vs Frequency 15, 16
Small signal closed loop inverting gain vs Frequency 17, 18
Small and large signal output vs Frequency 19, 20

Harmonic distortion

Vn, I

n

CMRR Common-mode rejection ratio vs Frequency 26
PSRR Power supply rejection ratio vs Frequency 27
Crosstalk vs Frequency 28
Z

o

SR Slew rate vs Output voltage step 30

V

IO

I

B

V

O

I

CC

Voltage noise and current noise vs Frequency 25

Output impedance vs Frequency 29

Input offset voltage
Input bias current vs Free-air temperature 33

Output voltage vs Output current 34, 35
Output voltage headroom vs Output current 36
Supply current (per channel) vs Supply voltage 37
Shutdown response 38

vs Frequency 21, 22
vs Peak–to–peak output voltage

vs Free-air temperature 31
vs Common-mode input voltage

23, 24

32

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5