THS7353 Datasheet, PDF (7/51 Pages) Texas Instruments – 3-Channel Low Power Video Buffer with I2C Control, Selectable Filters, External Gain Control, 2:1 Input MUX, and Selectable Input Modes

THS7353
www.ti.com
SLOS484 – NOVEMBER 2005
ELECTRICAL CHARACTERISTICS, V_S+ = 5 V (continued)
R_L = 150 Ω to GND, Filter Select = 9 MHz, Input Bias = dc, Adjust pin shorted to the output pin (unless otherwise noted)
PARAMETER
TEST CONDITIONS
TYP
25°C
25°C
OVERTEMPERATURE
0°C to 70°C
–40°C to
85°C
UNITS
MIN/MAX
Bias output voltage
Bias = dc + 250 mV, V_I = 0 V
Bias = ac
260
225/305
215/315
205/325
mV
Min/Max
1.55
1.4/1.7
1.35/1.75
1.35/1.75
V
Min/Max
Sync tip clamp voltage
Bias = ac STC, clamp voltage
265
205/325
195/335
190/340
mV
Min/Max
Input bias current
Bias = dc - implies Ib out of the pin
–0.6
–4
–5
–5
µA
Max
Average bias current drift Bias = dc
10
nA/°C
Bias = ac STC, low bias
1.7
0.6/3.3
0.5/3.5
0.4/3.6
µA
Min/Max
Sync tip clamp bias current Bias = ac STC, mid bias
6.2
4.3/8.2
4.1/8.4
4/8.5
µA
Min/Max
Bias = ac STC, high bias
7.9
6.2/10.8
6/11
5.9/11.1
µA
Min/Max
INPUT CHARACTERISTICS
Input voltage range
Bias = dc - ensured by out swing
0/3.4
0/2.95
0/2.85
0/2.8
V
Min/Max
Bias = ac bias mode
21
kΩ
Input resistance
Bias = dc, dc + 250 mV, ac STC
3
MΩ
Input capacitance
2
pF
OUTPUT CHARACTERISTICS
High output voltage swing
(limited by input voltage with
gain = 0 dB)
R_L = 150 Ω to Midrail
R_L = 150 Ω to GND
R_L = 75 Ω to Midrail
R_L = 75 Ω to GND
R_L = 150 Ω to Midrail
Low output voltage swing
R_L = 150 Ω to GND
R_L = 75 Ω to Midrail
R_L = 75 Ω to GND
Output current
R_L = 10 Ω to GND, sourcing
R_L = 10 Ω to Midrail, sinking
POWER SUPPLY
3.4
3.4
2.95
2.85
3.4
3.4
0.2
0.34
0.37
0.09
0.23
0.26
0.35
0.46
0.5
0.09
0.23
0.26
85
60
57
85
60
57
V
2.8
V
Min
V
V
0.37
V
Max
0.27
V
Max
0.5
V
Max
0.27
V
Max
55
mA
Min
55
mA
Min
Maximum operating voltage
5
5.5
5.5
5.5
V
Max
Minimum operating voltage
5
2.7
2.7
2.7
V
Min
Maximum quiescent current
Minimum quiescent current
Total quiescent current
Power supply rejection
(+PSRR)
Per channel V_I = 400 mV
Per channel V_I = 400 mV
All channels ON, V_I = 400 mV⁽³⁾
V_S+ = 5.2 V to 4.8 V
6.5
7.8
8
6.5
5.2
5
18.75
45
40
38
8.1
mA
Max
4.9
mA
Min
mA
37
dB
Min
DISABLE CHARACTERISTICS
Quiescent current
All 3 channels disabled ⁽⁴⁾
0.4
µA
Turn-on time delay (t_ON)
Time reaches 50% of final value after I²C
5
µs
Turn-on time delay (t_OFF)
control is completed
2
µs
(3) Due to sharing of internal bias circuitry, the quiescent current, with all channels operating, is less than the single individual channel
quiescent currents added together.
(4) Note that the I²C circuitry is still active while in Disable mode. The current shown is while there is no activity with the THS7353’s I²C
circuitry.
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