Datasheet

BUF12840
www.ti.com SBOS519A –OCTOBER 2010– REVISED JULY 2011
ELECTRICAL CHARACTERISTICS
Boldface limits apply over the specified temperature range, T
A
= –40°C to +95°C.
At T
A
= +25°C, V
S
= +18V, and V
SD
= +5V, unless otherwise noted.
BUF12840
PARAMETER CONDITIONS MIN TYP MAX UNIT
ANALOG GAMMA BUFFER CHANNELS
Reset value Code 0 0 V
OUT1 to OUT12 output swing: high Code = 1023, sourcing 10mA 17.7 17.85 V
OUT1 to OUT12 output swing: low Code = 0, sinking 10mA 0.07 0.3 V
OUT1 to OUT12 output swing: high Code = 1023, sourcing 5mA 17.8 17.9 V
OUT1 to OUT12 output swing: low Code = 0, sinking 5mA 0.07 0.2 V
Continuous output current See note
(1)
30 mA
Output accuracy Code 512 ±20 ±50 mV
vs Temperature Code 512 ±25 μV/°C
Integral nonlinearity INL V
OUT
= GND + 0.3V to V
S
– 0.3V 0.3 Bits
Differential nonlinearity DNL V
OUT
= GND + 0.3V to V
S
– 0.3V 0.3 Bits
Load regulation, 10mA REG Code 512 or V
CC
/2, I
OUT
= +5mA to –5mA step 0.5 1.5 mV/mA
ANALOG POWER SUPPLY
Operating range 9 20 V
Total analog supply current I
S
Outputs at midscale with no load 6.5 10 mA
Over temperature 19 mA
DIGITAL INPUT/OUTPUT
(2)
Logic 1 input voltage V
IH
0.7 × V
SD
V
Logic 0 input voltage V
IL
0.3 × V
SD
V
Logic 0 output voltage V
OL
I
SINK
= 3mA 0.15 0.4 V
Input leakage ±0.01 ±10 μA
Clock frequency f
CLK
Standard/Fast mode 400 kHz
High-Speed mode 3.4 MHz
EEPROM read clock speed Master mode 71 87 100 kHz
BANK switching delay LD pin = 0, V
OUT
= 50% of code 1023 7 10 μs
DIGITAL POWER SUPPLY
Operating range V
SD
2.0 5.5 V
Digital supply current
(1)
I
SD
Two-Wire bus inactive 90 150 μA
Over temperature 115 175 μA
Power-on reset POR 1.1 1.5 1.7 V
TEMPERATURE RANGE
Specified range –40 +95 °C
Operating range Junction temperature < +125°C –40 +95 °C
Storage range –65 +150 °C
(1) Observe maximum power dissipation. Exposed thermal die is soldered to the PCB using thermal vias. Refer to Texas Instruments
application report QFN/SON PCB Attachment (SLUS271).
(2) Refers to pins EA0, EA1, EN, LD, SCL, SDA, A0, and BKSEL.
Copyright © 2010–2011, Texas Instruments Incorporated 3