TSH120
2.2V to 5V video buffer with SAG correction
Features
■
■
■
■
■
■
■
■
■
Very low consumption
Standby mode available
Internal reconstruction filter
Internal gain of 6dB
Rail-to-rail output
Tested with +2.5V and +3.3V single supply
Operation supply from +2.2V to +5.5V
SAG correction
Excellent video performance
– Differential gain 0.5%
– Differential phase 0.5°
– Group delay=10ns
Specified for 150Ω load
Input DC level shifter
20
H1
TS
Pin connections
(top view)
■
■
■
Min. and max. limits are tested in full
production
Applications
■
■
■
■
t
uc
le
o
od
r
s
P
b
O
Description
e
et
l
so
b
O
Digital still camera
Digital video camera
Set-top box and DVD video outputs
Camera phones
r
P
e
od
uc
s)
t(
O
-
so
b
te
le
IN 1
ro
P
uc
d
s)
t(
GND 2
SAG 3
s)
t(
b
-O
so
te
le
r
P
od
s)
t(
uc
6 V
CC
5 EN
(Enable)
4 OUT
The TSH120 is a single operator available in a
tiny SC70 plastic package for space saving.
The TSH120 is a video buffer that includes a
voltage feedback amplifier with an internal gain of
6dB, rail-to-rail output, internal input biasing and
SAG correction. A power down function offers a
sleep mode with ultra low consumption.
The TSH120 also features an internal
reconstruction filter in order to attenuate the
parasitic 27MHz frequency from the clock of the
video DAC.
August 2007
Rev 3
1/13
www.st.com
13
Absolute maximum ratings
TSH120
1
Absolute maximum ratings
Table 1.
Symbol
V
CC
V
in
T
oper
T
stg
T
j
R
thja
R
thjc
P
max
Supply voltage
(1)
Input voltage range
(2)
Operating free air temperature range
Storage temperature
Maximum junction temperature
Thermal resistance junction to ambient
Thermal resistance junction to case
Maximum power dissipation
(3)
for T
j
=150°C
T
a
=+25°C
T
a
=+85°C
HBM: human body model
(4)
except pin-4
pin-4
MM: machine model
Latch-up immunity
(5)
Absolute maximum ratings
Parameter
Value
6
2
-40 to +105
-65 to +150
150
430
58
Unit
V
V
°C
°C
ESD
)-
(s
so
b
ct
u
d
-O
ro
s)
P
t(
te
uc
le
o
od
r
s
P
b
O
te
le
so
b
O
Table 2.
Operating conditions
Symbol
V
CC
Parameter
Supply voltage
(1)
1. All voltage values are measured with respect to the ground pin.
b
O
so
te
le
r
P
d
o
290
150
2
1.5
200
200
uc
s)
t(
kV
V
mA
°C
°C/W
°C/W
mW
2. The magnitude of input and output voltage must never exceed V
CC
+0.3V.
P
te
le
od
r
s)
t(
uc
3. Short-circuits can cause excessive heating. Destructive dissipation can result from short-circuits on
amplifiers.
4. Human body model: A 100pF capacitor is charged to the specified voltage, then discharged through a
1.5kΩ resistor between two pins of the device. This is done for all couples of connected pin combinations
while the other pins are floating.
5. Machine model: A 200pF capacitor is charged to the specified voltage, then discharged directly between
two pins of the device with no external series resistor (internal resistor < 5Ω). This is done for all couples of
connected pin combinations while the other pins are floating. This is a minimum value.
Value
2.2 to 5.5
Unit
V
1. Tested in full production at +2.5V and +3.3V single supply voltage.
2/13
TSH120
Electrical characteristics
2
Table 3.
Symbol
Electrical characteristics
Electrical characteristics for V
CC
= +2.5V and +3.3V, T
amb
= 25°C (unless otherwise
specified)
Parameter
Test conditions
Min.
Typ.
Max.
Unit
DC performance
V
dc
Output DC level shift
R
L
= 150Ω
T
min
≤
T
amb
≤
T
max
V
CC
= +3.3V
T
min
≤
T
amb
≤
T
max
V
CC
= +2.5V
T
min
≤
T
amb
≤
T
max
Internal voltage gain
Power supply rejection ratio
20 log (ΔV
CC
/ΔV
out
)
V
in
=1V
T
min
≤
T
amb
≤
T
max
ΔV
CC
=±100mV at 1MHz
No load, V
in
=+0.5V
V
CC
=+3.3V
T
min
≤
T
amb
≤
T
max
No load, V
in
=+0.5V
V
CC
=+2.5V
T
min
≤
T
amb
≤
T
max
-880
-840
5.95
94
129
403
-550
-650
-550
-620
6.1
6.05
55
158
mV
μV/°C
I
ib
Input bias current
G
PSRR
I
CC
Current consumption
)-
(s
so
b
ct
u
d
-O
ro
s)
P
t(
te
uc
le
o
od
r
s
P
b
O
te
le
so
b
O
Enable/standby (EN pin)
I
STBY
Consumption in standby mode
Standby low level
V
CC
=+3.3V
V
CC
=+2.5V
V
STBY-low
Standby mode
Enable mode
V
STBY-high
T
on
Standby high level
Time from standby to enable
T
off
Time from enable to standby
Dynamic performance and output characteristics
FR
Frequency response
V
OH
High level output voltage
b
O
so
te
le
ro
P
uc
d
6.2
6.6
s)
t(
nA
P
te
le
+0.8
od
r
5.8
6.7
5.8
6.7
s)
t(
uc
dB
dB
6.3
mA
mA
4
2
+0.3
μA
V
V
5
5
μs
μs
V
out
=2V
pp
, R
L
= 150Ω
V
CC
=+3.3V, F=4.5MHz
T
min
≤
T
amb
≤
T
max
V
out
=2V
pp,
R
L
= 150Ω
V
CC
=+2.5V, F=4.5MHz
V
CC
=+3.3V, F=27MHz
T
min
≤
T
amb
≤
T
max
-0.4
-0.1
-0.48
0
0.4
dB
-20
3.13
2.36
-25
-23
3.21
2.42
V
V
CC
=+3.3V, R
L
=150Ω
V
CC
=+2.5V, R
L
=150Ω
3/13
Electrical characteristics
Table 3.
Symbol
TSH120
Electrical characteristics for V
CC
= +2.5V and +3.3V, T
amb
= 25°C (unless otherwise
specified) (continued)
Parameter
Test conditions
V
in
= -100mV, R
L
= 150Ω
V
CC
=+3.3V
T
min
≤
T
amb
≤
T
max
V
in
= -100mV, R
L
= 150Ω
V
CC
=+2.5V
T
min
≤
T
amb
≤
T
max
I
source
Differential gain
Differential phase
Group delay
V
CC
=+3.3V, output to GND
V
CC
=+3.3V, R
L
= 150Ω
V
CC
=+3.3V, R
L
= 150Ω
10kHz to 6MHz
Min.
Typ.
Max.
Unit
5
5.6
5
5.5
30
0.5
0.5
34
mV
33
V
OL
Low level output voltage
I
out
ΔG
Δφ
Gd
Noise
eN
SNR
mA
Total output noise
Output signal to noise ratio
F = 100kHz, no load
V
CC
=+3.3V, R
L
= 150Ω
V
out
=2V
pp
from 0 to 6MHz
te
le
od
o
r
s
P
b
O
te
le
)-
(s
so
b
ct
u
d
-O
ro
s)
P
t(
te
uc
le
o
od
r
s
P
b
O
te
le
so
b
O
60
1. Guaranteed by design. The parameter is not tested.
r
P
d
o
25
uc
10
(1)
s)
t(
%
°
ns
nV/√Hz
dB
s)
t(
uc
4/13
TSH120
Electrical characteristics
Figure 1.
10
5
0
-5
-10
-15
Frequency response
Figure 2.
7.0
6.8
Gain flatness
Vcc=+3.3V
Load=150
Ω
Vcc=+5V
Vcc=+3.3V
Vcc=+2.5V
6.6
6.4
Gain (dB)
-20
-25
-30
-35
-40
-45
-50
-55
-60
100k
1M
Gain (dB)
6.2
6.0
5.8
5.6
5.4
5.2
5.0
100k
10M
27MHz
100M
1M
Frequency (Hz)
Frequency (Hz)
Figure 3.
500
Total input noise vs. frequency
No load
Input to GND
Vcc=+3.3V
Figure 4.
-20
Distortion on 150Ω load
400
-30
Vcc=+3.3V
Vicm=0.5V
F=1MHz
Load=150
Ω
e
n
(nV/VHz)
300
Distortion (dB)
-40
)-
(s
so
b
ct
u
d
-O
ro
s)
P
t(
te
uc
le
o
od
r
s
P
b
O
te
le
so
b
O
100
-60
200
b
O
-50
so
te
le
H2
H3
ro
P
uc
d
s)
t(
10M
P
te
le
1.0
1.5
od
r
2.0
2.5
s)
t(
uc
0
10
100
1k
10k
100k
1M
10M
-70
0.0
0.5
3.0
3.5
4.0
Frequency (Hz)
Output Amplitude (Vp-p)
Figure 5.
5.0
Output voltage swing vs. supply
4.5
F=1MHz
Load=150
Ω
Output swing (Vp-p)
4.0
3.5
3.0
2.5
2.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
Vcc (V)
5/13
嵌入式系统
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
