ST TSH330 User Manual

TSH330

1.1 GHz Low-Noise Operational Amplifier

■ Bandwidth: 1.1GHz (Gain=+2)

■ Quiescent current: 16.6 mA

■ Slew rate: 1800V/µs

■ Input noise: 1.3nV/√Hz

■ Distortion: SFDR = -78dBc (10MHz, 2Vp-p)

■ Output stage optimized for driving 100Ω

loads

■ Tested on 5V power supply

Description

The TSH330 is a current feedback operational amplifier using a very high-speed complementary technology to provide a large bandwidth of

1.1GHz in gain of 2 while drawing only 16.6mA of quiescent current. In addition, the TSH330 offers

0.1dB gain flatness up to 160MHz with a gain of 2. With a slew rate of 1800V/µs and an output stage optimized for driving a standard 100Ω load, this device is highly suitable for applications where speed and low-distortion are the main requirements.

The TSH330 is a single operator available in the SO8 plastic package, saving board space as well as providing excellent thermal and dynamic performances.

Pin Connections (top view)

D

SO-8

(Plastic Micropackage)

1

NC

-IN

+IN

-VCC

2

3

4

_

+

SO8

NC

8

7

+VCC

6NCOutput

5

Applications

■ Communication & video test equipment

■ Medical instrumentation

■ ADC drivers

Order Codes

Part Number Temperature Range Package Conditioning Marking

TSH330ID

TSH330IDT SO8 Tape&Reel TSH330I

June 2005 Revision 3 1/19

-40°C to +85°C

SO8 Tube TSH330I

TSH330 Absolute Maximum Ratings

1 Absolute Maximum Ratings

Table 1. Key parameters and their absolute maximum ratings

Symbol Parameter Value Unit

V

T

R R P

Supply Voltage

CC

V

Differential Input Voltage

id

V

Input Voltage Range

in

Operating Free Air Temperature Range

oper

Storage Temperature

stg

Maximum Junction Temperature

T

j

SO8 Thermal Resistance Junction to Ambient 60 °C/W

thja

SO8 Thermal Resistance Junction to Case 28 °C/W

thjc

SO8 Maximum Power Dissipation4 (@Ta=25°C) for Tj=150°C

max

HBM: Human Body Model HBM: Human Body Model (pins 2 and 3) 0.6 kV

ESD

MM: Machine Model MM: Machine Model (pins 2 and 3) 80 V CDM: Charged Device Model (pins 1, 4, 5, 6, 7 and 8) 1.5 kV CDM: Charged Device Model (pins 2 and 3) 1 kV Latch-up Immunity 200 mA

1) All voltages values are measured with respect to the ground pin.

2) Differential voltage are non-inverting input terminal with respect to the inverting input terminal.

3) The magnitude of input and output voltage must never exceed VCC +0.3V.

4) Short-circuits can cause excessive heating. Destructive dissipation can result from short circuit on amplifiers.

5) Human body model, 100pF discharged through a 1.5kΩ resistor into pMin of device.

6) This is a minimum Value. Machine model ESD, a 200pF cap is charged to the specified voltage, then discharged directly into the IC with

no external series resistor (internal resistor < 5Ω), into pin to pin of device.

1

2

3

5

(pins 1, 4, 5, 6, 7 and 8)

6

(pins 1, 4, 5, 6, 7 and 8)

6V +/-0.5 V +/-2.5 V

-40 to + 85 °C

-65 to +150 °C 150 °C

830 mW

2kV

200 V

Table 2. Operating conditions

Symbol Parameter Value Unit

V V

1) Tested in full production at 5V (±2.5V) supply voltage.

Supply Voltage

CC

Common Mode Input Voltage

icm

2/19

1

4.5 to 5.5 V

-Vcc+1.5V, +Vcc-1.5V V

Electrical Characteristics TSH330

2 Electrical Characteristics

Table 3. Electrical characteristics for VCC= ±2.5Volts, T

=+25°C (unless otherwise specified)

amb

Symbol Parameter Test Condition Min. Typ. Max. Unit

DC performance

V

io

∆V

I

ib+

I

ib-

CMR

SVR

PSR

ICC

Input Offset Voltage

Offset Voltage between both inputs

Vio drift vs. Temperature T

io

Non Inverting Input Bias Current

DC current necessary to bias the input +

Inverting Input Bias Current

DC current necessary to bias the input -

Common Mode Rejection Ratio

20 log

(∆Vic/∆Vio)

Supply Voltage Rejection Ratio

20 log

(∆Vcc/∆V

out

)

Power Supply Rejection Ratio

20 log

(∆Vcc/∆V

out

)

Supply Current

DC consumption with no input signal

T

amb

T

< T < T

< T

amb

< T < T

< T

max.

min.

T

amb

T

min.

T

amb

T

min.

∆Vic = ±1V T

< T

amb

< T

max.

min.

∆Vcc= 3.5V to 5V

< T

T

min.

amb

< T

max.

∆Vcc=200mVp-p@1kHz

< T

T

min.

amb

< T

max.

-3.1 0.18 +3.1

0.8

1.6 µV/°C

26 55 21

722

13

50 54

54

63 74

67 56

52 No load 16.6 20.2 mA T

< T

min.

amb

< T

max.

16.6 mA

Dynamic performance and output characteristics

R

Bw

SR

V

Transimpedance

Output Voltage/Input Current Gain in open loop of a CFA.

OL

For a VFA, the analog of this feature is the Open Loop Gain (A

VD

)

-3dB Bandwidth

Frequency where the gain is 3dB below the DC gain A

Note: Gain Bandwidth Product criterion is

V

not applicable for Current-FeedbackAmplifiers

Gain Flatness @ 0.1dB

Band of frequency where the gain variation does not exceed 0.1dB

Slew Rate

Maximum output speed of sweep in large signal

High Level Output Voltage RL = 100Ω

OH

Low Level Output Voltage RL = 100Ω

OL

= ±1V, RL = 100Ω

∆V

out

< T

T

min.

out=20mVp-p, RL = 100Ω

V

= +1

A

V

= +2

A

V

amb

< T

max.

AV = -4

= -4, T

A

V

Small Signal V

= +2, RL = 100Ω

A

V

= 2Vp-p, AV = +2,

V

out

min.

< T

amb

=20mVp-p

out

< T

RL = 100Ω

< T

amb

< T

max.

T

min.

T

min.

104 153 kΩ

152 kΩ

1500 1100

550

max.

630 600

160

1800 V/µs

1.5 1.64 V

1.54

-1.55 -1.5 V

-1.5

mV

µA

dB

MHz

3/19

TSH330 Electrical Characteristics

Table 3. Electrical characteristics for VCC= ±2.5Volts, T

=+25°C (unless otherwise specified)

amb

Symbol Parameter Test Condition Min. Typ. Max. Unit

I

Isink

out

Short-circuit Output current coming in the op-amp.

Output to GND 360 453

< T

T

min.

amb

< T

max.

427

See fig-17 for more details

Isource

Output current coming out from the opamp.

Output to GND -340 -400

< T

T

min.

amb

< T

max.

-350

See fig-18 for more details

Noise and distortion

eN

iN

SFDR

Equivalent Input Noise Voltage

see application note on page 13

Equivalent Input Noise Current (+)

see application note on page 13

Equivalent Input Noise Current (-)

see application note on page 13

Spurious Free Dynamic Range

The highest harmonic of the output spectrum when injecting a filtered sine wave

F = 100kHz

= +2, Vout = 2Vp-p,

A

V

= 100Ω

R

L

F = 10MHz F = 20MHz F = 100MHz F = 150MHz

1.3 nV/√Hz

22 pA/√Hz

16 pA/√Hz

-78

-73

-48

-37

Table 4. Closed-loop gain and feedback components

mA

dBc

V

CC

(V)

Gain

Rfb (Ω)

-3dB Bw (MHz) 0.1dB Bw (MHz)

+10 200 280 50

-10 200 270 45

+2 300 1000 160

±2.5

-2 270 530 180

+1 300 1500 38

-1 260 600 280

4/19

Electrical Characteristics TSH330

Figure 1. Frequency response, positive gain

24 22 20 18 16 14 12 10

8 6 4

Gain (dB)

2 0

-2

-4

Small Signal

-6

Vcc=5V

-8

Load=100

-10 1M 10M 100M 1G

Gain=+10

Gain=+4

Gain=+2

Gain=+1

Ω

Frequency (Hz)

Figure 2. Gain flatness, gain=+4

12,2

12,0

11,8

11,6

Gain Flatness (dB)

11,4

Vin

8k2

22pF

Gain=+4, Vcc=5V,

Gain=+4, Vcc=5V, Small Signal

Small Signal

1M 10M 100M

+

-

100R

300R

Vout

Frequency (Hz)

Figure 4. Frequency response, negative gain

24 22 20 18 16 14 12 10

8 6 4

Gain (dB)

2 0

-2

-4

Small Signal

-6

Vcc=5V

-8

Load=100

-10 1M 10M 100M 1G

Gain=-10

Gain=-4

Gain=-2

Gain=-1

Ω

Frequency (Hz)

Figure 5. Gain flatness, gain=+2

6,2

6,0

Vin

+

Vout

5,8

8k2

8k2 1pF

Gain Flatness (dB)

1pF

5,6

Gain=+2, Vcc=5V,

Gain=+2, Vcc=5V, Small Signal

Small Signal

5,4

1M 10M 100M 1G

-

300R

Vout

Frequency (Hz)

Figure 3. Compensation, gain=+2

10

8 6 4 2 0

-2

-4

-6

Vin

-8

Gain (dB)

-10

8k2

-12

1pF

-14

-16

-18

Gain=+ 2, Vcc=5V,

Gain=+ 2, Vcc=5V, Small Signal

Small Signal

-20

-22 1M 10M 100M 1G

+

-

300R

Frequency (Hz)

Vout

Figure 6. Compensation, gain=+4

16 14 12 10

8 6 4 2

Vin

0

-2

Gain (dB)

-4

8k2

-6

22pF

-8

-10

-12

Gain=+4, Vcc=5V,

-14

Small Signal

-16 1M 10M 100M 1G

+

-

100R

300R

Vout

Frequency (Hz)

5/19

TSH330 Electrical Characteristics

Figure 7. Compensation, gain=+10

24 22 20 18 16 14 12 10

Vin

8 6

Gain (dB)

4

15pF

2 0

-2

Gain=+10, Vcc=5V,

-4

Small Signal

-6

-8 1M 10M 100M 1G

22R

+

-

200R

Vout

Frequency (Hz)

Figure 8. Input current noise vs. frequency

150 140 130 120 110 100

90 80 70

(pA/VHz)

60

n

i

50 40 30 20 10

Neg. Current Noise

Pos. Current Nois e

1k 10k 100k 1M 10M

Frequency (Hz)

Figure 10. Quiescent current vs. Vcc

20

15

10

5

0

-5

-10

Icc (mA)

-15

-20

Gain=+2 Vcc=5V

-25

Input to ground, no load

-30 1,25 1,50 1,75 2,00 2,25 2,50

Icc(+)

Icc(-)

+/-Vcc (V)

Figure 11. Input voltage noise vs. frequency

4.0

3.5

3.0

2.5

(nV/VHz)

n

e

2.0

1.5

1.0 1k 10k 100k 1M 10M

Frequency (Hz)

Figure 9. Output amplitude vs. load

4,0

3,5

3,0

Vout max. (Vp-p)

2,5

2,0

10 100 1k 10k 100k

6/19

Load (ohms)

Freq=? Gain=+2 Vcc=5V

Figure 12. Noise figure

40

35

30

25

20

NF (dB)

15

10

5

0

1 10 100 1k 10k 100k

Rsource (ohms)

Vcc=5V