Datasheet

TLC7225C, TLC7225I
QUADRUPLE 8-BIT DIGITAL-TO-ANALOG CONVERTERS
SLAS109B – OCTOBER 1996 – REVISED FEBRUARY 2001
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
Terminal Functions
TERMINAL
I/O
DESCRIPTION
NAME NO.
I/O
DESCRIPTION
AGND 6 Analog ground
A0, A1 18, 19 I DAC select inputs
DGND 7 Digital ground
DB0 – DB7 9 – 16 I Digital DAC data inputs
LDAC 8 Load DAC. A high level simultaneously loads all four DAC registers. DAC registers are transparent when LDAC
is low.
OUTA 2 O DACA output
OUTB 1 O DACB output
OUTC 24 O DACC output
OUTD 23 O DACD output
REFA 5 I Voltage reference input to DACA
REFB 4 I Voltage reference input to DACB
REFC 21 I Voltage reference input to DACC
REFD 20 I Voltage reference input to DACD
V
DD
22 Positive supply voltage
V
SS
3 Negative supply voltage
WR 17 I Write input selects DAC transparency or latch mode
absolute maximum ratings over operating free-air temperature range (unless otherwise note)
†
Supply voltage range, V
DD
: to AGND or DGND –0.3 V to 17 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
to V
SS
–0.3 V to 24 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Supply voltage range, V
SS
: to AGND or DGND –7 V to V
DD
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage range between AGND and DGND –0.3 V to V
DD
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range, V
I
(to DGND) –0.3 V to V
DD
+ 0.3 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reference voltage range, V
ref
(to AGND) –0.3 V to V
DD
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output voltage range, V
O
(to AGND) (see Note 1) V
SS
to V
DD
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous total power dissipation at (or below) T
A
= 25°C (see Note 2) 500 mW. . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range: C suffix 0°C to 70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I suffix –40°C to 85°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
stg
–65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds 260°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
†
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. Output voltages may be shorted to AGND provided that the power dissipation of the package is not exceeded. Typically short circuit
current to AGND is 50 mA.
2. For operation above T
A
= 75°C derate linearly at the rate of 2.0 mW/°C.