TSH341
300MHz Single Supply Video Amplifier with Low In/Out Rail
■ Bandwidth: 300MHz
■ Single supply operation down to 3V
■ Low input & output rail
■ Very low harmonic distortion
■ Slew rate: 400V/ µ s
■ Voltage Input noise: 7nV/ √ Hz
■ Specified for 150
Ω
load and 100
Ω
load
■ Tested on 5V power supply
■ Data min. and max. are tested during production (
Table 3 )
Description
The TSH341 is a single supply operational amplifier featuring a large bandwidth of 300MHz at unity gain for only 9.8mA of quiescent current.
An advantage of this circuit is its low input and output rail feature which is very close to GND in single supply. This rail is tested and guaranteed during production at 60mV (max.) from GND on a
150
Ω
load. This allows a good output swing which fits perfectly when driving a video signal on a 75 Ω
video line. Chapter 5
gives technical support when using the TSH341 as a driver for video DAC output on a video line. In particular, this chapter focuses on applying a video signal DC shift to avoid any clamping of the synchronization tip.
The TSH341 is available in the tiny SOT23-5 and
SO8 plastic packages.
Order Codes
Part Number
TSH341ILT
TSH341ID
TSH341IDT
Temperature Range
-40°C to +85°C
Pin Connections (top view)
Applications
■ High-end video systems
■ High Definition TV (HDTV)
■ Broadcast video
■ Multimedia products
Package
SOT23-5
SO-8
Packaging
Tape & Reel
Tube
Tape & Reel
Marking
K307
H341I
H341I
March 2005 Revision 2 1/13
TSH341 Absolute Maximum Ratings
1 Absolute Maximum Ratings
Table 1.
Key parameters and their absolute maximum ratings
Symbol
V
CC
Vid
V in
T oper
T std
T j
R
R
P thjc thja max.
ESD
Parameter
Supply voltage
1
Differential Input Voltage
2
Input Voltage Range
3
Operating Free Air Temperature Range
Storage Temperature
Maximum Junction Temperature
Thermal Resistance Junction to Case
SOT23-5
SO8
Thermal Resistance Junction to Ambient Area
SOT23-5
SO8
Maximum Power Dissipation (@Ta=25°C) for Tj=150°C
SOT23-5
SO8
CDM: Charged Device Model
HBM: Human Body Model
MM: Machine Model
Output Short Circuit
Value
6
+/-0.5
-0.2 to +3
-40 to +85
-65 to +150
150
80
28
250
175
500
715
2
1.5
200
4
1) All voltage values, except differential voltage are with respect to network terminal.
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 V
CC
+0.3V.
4) An output current limitation protects the circuit from transient currents. Short-circuits can cause excessive heating.
Destructive dissipation can result from short circuit on amplifiers.
Table 2.
Operating conditions
Symbol Parameter
V
CC
Power Supply Voltage
Vicm Common Mode Input Voltage
1) Tested in full production at 0V/5V single power supply
Value
3 to 5.5
1
-0.4 to 3
°C/W mW kV kV
V
Unit
V
V
Unit
V
V
V
°C
°C
°C
°C/W
2/13
Electrical Characteristics TSH341
2 Electrical
Table 3.
V
CC
= +5V, T amb
= 25°C (unless otherwise specified)
Symbol Parameter Test Condition
DC Performance
∆
I
V
A
I
V io ib io
VD
CMR
SVR
PSR
R
IN
C
IN
CC
Input Offset Voltage
V io
drift vs. Temperature
Input Bias Current
Open Loop Gain
Common Mode Rejection Ratio
20 log (
∆
V icm
/
∆
V io
)
Supply Voltage Rejection Ratio
20 log (
∆
V cc
/
∆
V io
)
Power Supply Rejection Ratio
20 log (
∆
V cc
/
∆
V out
)
Input Resistance
Input Capacitance
Total Supply Current
T amb
, V icm
=0.6V
-40°C < T amb
< +85°C
-40°C < T amb
< +85°C
T amb
, V icm
=0.6V
-40°C < T amb
< +85°C
∆
V
∆
V
∆
V
∆
V
OUT icm cc cc
=2V, R
= 2V
-40°C < T
-40°C < T amb amb
L =150
Ω
< +85°C
=4V to 5V, V icm
=0.6V
< +85°C
=200mVp-p, F=1MHz
No Load, V icm
=0.6V
Dynamic Performance and Output Characteristics
I
Bw
FPBW
SR
V
V
OH
OL
OUT
-3dB Bandwidth
Gain Flatness @ 0.1dB
Full Power Bandwidth
Slew Rate
High Level Output Voltage
Low Level Output Voltage
Output Short Circuit Current
Small Signal V
OUT
V icm
=20mVp
=0.6V, R L =150
Ω
Gain=+1
Gain=+2
Small Signal V
OUT
=20mVp
Gain=+2, V icm
R L =150
Ω
=0.6V,
V icm
=2V, V
OUT
Gain=1, R
L
= 2Vp-p,
= 150
Ω
V
OUT
=2Vp-p, R
L
=150
Ω
,
Gain=+2,
R
L
= 150
Ω
R
L
= 150
Ω
T amb
-40°C < T amb
< +85°C
Noise and Distortion eN iN
Equivalent Input Noise Voltage
Equivalent Input Noise Current (+)
2nd Harmonic Distortion
HD2
HD3
3rd Harmonic Distortion
F = 100kHz
F = 100kHz
V
OUT
= 2Vp-p, R
L
= 150
Ω
Gain=+2, F= 10MHz,
V
OUT
= 2Vp-p, R
L
= 150
Ω
Gain=+2, F= 10MHz,
Min.
-15
70
-60
-60
90
70
3.7
70
Typ.
Max.
-77
8.2
3.5
9.8
-3
-5
-85
-83
-85
-84
-30
6
7.2
100
300
150
65
7
1.5
-57
-63
100
400
3.9
40
100
90
15
16
12.7
60
Unit dB dB
M
Ω pF mA
MHz nV/
√
Hz pA/
√
Hz dBc dBc mV
µ
V/°C
µ
A dB dB
MHz
V/
µ s
V mV mA
3/13
TSH341
Figure 1. Frequency response
16
14
12
10
8
6
0
-2
4
2
-4
-6
-8
-10
-12
-14
-16
1M
Gain=+4
Gain=+2
Gain=+1
Vcc=5V
Load=100 Ω or 150 Ω
SO8 and SOT23-5
10M
Frequency (Hz)
100M
Figure 2. Gain flatness - SOT23-5L
6,4
6,2
6,0
5,8
5,6
5,4
5,2
5,0
4,8
4,6
1M
Vcc=5V
Gain=+2
Load=150 Ω
Load=100 Ω
10M
Frequency (Hz)
100M
Figure 3. Total input noise vs. frequency non-inverting input in short-circuit
Vcc=5V
100
10
100 1k 10k 100k
Frequency (Hz)
1M 10M
Electrical Characteristics
Figure 4. Frequency response on capa-load
20
10
C=47pF
Riso=10 Ω
C=10pF
Riso=0
0
-10
C=22pF
Riso=10 Ω
C=0 or
10pF
Riso=0
-20
1M
Vcc=5V
Gain=+2
Load=Riso + C//1k Ω (to ground)
10M
Frequency (Hz)
100M
Figure 5. Gain flatness - SO8
6,4
6,2
6,0
5,8
5,6
5,4
5,2
5,0
4,8
4,6
1M
Vcc=5V
Load=100 Ω
Load=150 Ω
10M
Frequency (Hz)
100M
Figure 6. Positive and negative slew rate
2,0
1,5
1,0
0,5
3,0
2,5
Vcc=5V
G=+2
Load=100 Ω or 150 Ω
SR-
SR+
0,0
-5ns -4ns -3ns -2ns -1ns 0s
Time
1ns 2ns 3ns 4ns 5ns
4/13
Electrical Characteristics
Figure 7. Distortion on 100 Ω load
-55
-60
-65
-70
-75
-80
-85
-90
0
-20
-25
-30
-35
-40
-45
-50
HD3
(30MHz)
HD2
(30MHz)
HD3
(10MHz)
1
HD2
(10MHz)
2
Output Amplitude (Vp-p)
3
Vcc=5V
Load=100 Ω
4
Figure 8. Output lower rail vs. frequency
500
400
Vcc=5V
Load=100 Ω or 150 Ω
300
200
100
0
10k 100k 1M
Frequency (Hz)
10M 100M
Figure 9. Output voltage swing vs. frequency
5
4
3
2
1
0
1M
Vcc=5V
Gain=+2
Load=100 Ω or Load=150 Ω
Frequency (Hz)
10M
TSH341
Figure 10. Distortion on 150 Ω load
-45
-50
-55
-60
-65
-70
-75
-80
0
-10
-15
-20
-25
-30
-35
-40
HD3
(30MHz)
HD2
(30MHz)
HD3
(10MHz)
HD2
(10MHz)
1 2
Output Amplitude (Vp-p)
3
Vcc=5V
Load=150 Ω
4
Figure 11. Output voltage swing vs. Vcc
5
4
3
2
1
0
3,00
F=30MHz
Load=100 Ω or 150 Ω
3,25 3,50 3,75 4,00
Vcc (V)
4,25 4,50 4,75 5,00
Figure 12. Quiescent current vs. Vcc
20 no load
15
10
5
0
1,5 2,0 2,5 3,0
Vcc (V)
3,5 4,0 4,5 5,0
5/13
TSH341
Figure 13. Isource
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
0,0
+3V
0,5 1,0
+5V
V OH without load
0V
1,5
Isource
2,0 2,5
V (V)
V
3,0 3,5 4,0 4,5 5,0
Figure 14. Bandwidth vs. temperature
300
250
200
150
100
-40
Vcc=5V
Gain=+1
Load=150 Ω
-20 0 20 40
Temperature (°C)
60
Figure 15. Input offset vs. temperature
80
0
-1
-2
-3
-4
-5
-40
Vcc=5V
Load=150 Ω
-20 0 20 40
Temperature (°C)
60 80
Electrical Characteristics
Figure 16. Reverse isolation vs. frequency
0
-20
-40
-60
-80
Small Signal
Vcc=5V
-100
1M
Load=100 Ω
10M 100M
Frequency (Hz)
Figure 17. Ibias vs. temperature
11,0
10,5
10,0
9,5
9,0
8,5
8,0
-40
Vcc=5V
Load=150 Ω
-20 0 20 40
Temperature (°C)
60
1G
Figure 18. Supply current vs. temperature
12
80
11
10
9
8
Vcc=5V no Load
7
-40 -20 0 20 40
Temperature (°C)
60 80
6/13
Electrical Characteristics
Figure 19. Output lower rail vs. temperature
0,10
0,08
Vcc=5V
Gain=+2
Load=150 Ω
0,06
0,04
0,02
0,00
-40 -20 0 20 40
Temperature (°C)
Figure 20. SVR vs. temperature
85,0
84,8
84,6
84,4
84,2
84,0
-40
86,0
85,8
85,6
85,4
85,2
Vcc=5V
-20 0 20 40
Temperature (°C)
60
60
80
80
TSH341
Figure 21. Output higher rail vs. temperature
4,50
4,25
4,00
3,75
Vcc=5V
3,50
-40
Gain=+2
Load=150 Ω
-20 0 20 40
Temperature (°C)
Figure 22. CMR vs. temperature
88
60 80
86
84
82
80
-40
Vcc=5V
-20 0 20 40
Temperature (°C)
60 80
7/13
TSH341 Evaluation Boards
An evaluation board kit optimized for high speed operational amplifiers is available (order code:
KITHSEVAL/STDL). The kit includes the following evaluation boards, as well as a CD-ROM containing datasheets, articles, application notes and a user manual: z
SOT23_SINGLE_HF BOARD: Board for the evaluation of a single high-speed op-amp in SOT23-5 package.
z SO8_SINGLE_HF: Board for the evaluation of a single high-speed op-amp in SO8 package.
z SO8_DUAL_HF: Board for the evaluation of a dual high-speed op-amp in SO8 package.
z
SO8_S_MULTI: Board for the evaluation of a single high-speed op-amp in SO8 package in inverting and non-inverting configuration, dual and signle supply.
z SO14_TRIPLE: Board for the evaluation of a triple high-speed op-amp in SO14 package with video application considerations.
Board material: z z
2 layers
FR4 (
ε
r=4.6) z epoxy 1.6mm
z copper thickness: 35µm
Figure 23: Evaluation kit for high speed op-amps
8/13
Power Supply Considerations TSH341
4 Power Supply Considerations
Correct power supply bypassing is very important for optimizing performance in high-frequency ranges.
Bypass capacitors should be placed as close as possible to the IC pins to improve high-frequency bypassing. A capacitor greater than 10 µ F is necessary to minimize the distortion. For better quality bypassing, a capacitor of 10nF is added using the same implementation conditions. Bypass capacitors must be incorporated for both the negative and the positive supply. On the SO8_SINGLE_HF board, these capacitors are C8 and C6.
Figure 24: Circuit for power supply bypassing
+V
CC
+V
CC
9/13
TSH341 Using the TSH341 to Drive Video Signals
5 Using the TSH341 to Drive Video Signals
Figure 25. Implementation of the video driver on output video DACs
75
Ω
75 Ω Cable
75
Ω
V
OL
(50MHz) = 150mV (
Figure 8 )
To drive the video signal properly, the output of the driver must be at least equal to
250mV (assuming V io
and V
OL
variations).
z 1st solution:
Set the video DAC 0-IRE output level to 125mV.
10/13 z
2nd solution:
Implementation of a DC component in the input of the driver.
75
Ω
75 Ω Cable
75
Ω
Package Mechanical Data
6 Package Mechanical Data
6.1 SO-8 Package
DIM.
E e
C
D
A
A1
A2
B
L k
H h ddd
MIN.
1.35
0.10
1.10
0.33
0.19
4.80
3.80
5.80
0.25
0.40
SO-8 MECHANICAL DATA
mm.
TYP MAX.
1.75
0.25
1.65
0.51
0.25
5.00
4.00
MIN.
0.053
0.04
0.043
0.013
0.007
0.189
0.150
1.27
6.20
0.50
0.228
0.010
1.27
0.1
8 ˚ (max.)
0.016
inch
TYP.
0.050
0.244
0.020
0.050
0.04
MAX.
0.069
0.010
0.065
0.020
0.010
0.197
0.157
TSH341
0016023/C
11/13
TSH341
6.2 SOT23-5L (5-pin) package
Package Mechanical Data
DIM.
E1 e e1
L
C
D
E
A
A1
A2 b
0.09
2.80
2.60
1.50
MIN.
0.90
0.00
0.90
0.35
0.35
SOT23-5L MECHANICAL DATA mm.
TYP
0.20
3.00
3.00
1.75
MAX.
1.45
0.15
1.30
0.50
3.5
110.2
102.3
59.0
MIN.
35.4
0.0
35.4
13.7
0 .95
1.9
0.55
13.7
mils
TYP.
37.4
74.8
7.8
118.1
118.1
68.8
MAX.
57.1
5.9
51.2
19.7
21.6
12/13
TSH341
Date
01 Jan. 2005
23 Mar. 2005
Revision
1
2
Description of Changes
First release corresponding to Preliminary Data version of datasheet.
Datasheet of mature, full-specification product
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
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All other names are the property of their respective owners
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13/13
