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THS5641 Datasheet, PDF (3/28 Pages) Texas Instruments – 8-BIT, 100 MSPS, CommsDACE DIGITAL-TO-ANALOG CONVERTER | |||
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THS5641
8-BIT, 100 MSPS, CommsDACâ¢
DIGITAL-TO-ANALOG CONVERTER
SLAS199A â MAY 1999 REVISED JUNE 1999
Terminal Functions
TERMINAL
NAME NO.
AGND
20
AVDD
24
BIASJ
18
CLK
28
COMP1
19
COMP2
23
D[7:0]
[1:8]
DGND
26
DVDD
27
EXTIO
17
EXTLO
16
IOUT1
22
IOUT2
21
MODE
25
NC
SLEEP
[9:14]
15
I/O
DESCRIPTION
I Analog ground return for the internal analog circuitry
I Positive analog supply voltage (3 V to 5.5 V)
O Full-scale output current bias
I External clock input. Input data latched on rising edge of the clock.
I Compensation and decoupling node, requires a 0.1 µF capacitor to AVDD.
I Internal bias node, requires a 0.1 µF decoupling capacitor to AGND.
I Data bits 0 through 7.
D7 is most significant data bit (MSB), D0 is least significant data bit (LSB).
I Digital ground return for the internal digital logic circuitry
I Positive digital supply voltage (3 V to 5.5 V)
I/O Used as external reference input when internal reference is disabled (i.e., EXTLO = AVDD). Used as internal
reference output when EXTLO = AGND, requires a 0.1 µF decoupling capacitor to AGND when used as reference
output
O Internal reference ground. Connect to AVDD to disable the internal reference source
O DAC current output. Full scale when all input bits are set 1
O Complementary DAC current output. Full scale when all input bits are 0
I Mode select. Internal pulldown. Mode 0 is selected if this pin is left floating or connected to DGND. See
timing diagram.
N No connection
I Asynchronous hardware power down input. Active High. Internal pulldown. Requires 5 µs to power down but 3 ms
to power up.
absolute maximum ratings over operating free-air temperature (unless otherwise noted)â
Supply voltage range, AVDD (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . â0.3 V to 6.5 V
DVDD (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . â0.3 V to 6.5 V
Voltage between AGND and DGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . â0.3 V to 0.5 V
Supply voltage range, AVDD to DVDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . â6.5 V to 6.5 V
CLK, SLEEP, MODE (see Note 2) . . . . . . . . . . . . . . . . . . . . . . â0.3 V to DVDD + 0.3 V
Digital input D7âD0 (see Note 2) . . . . . . . . . . . . . . . . . . . . . . â0.3 V to DVDD + 0.3 V
IOUT1, IOUT2 (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . â1 V to AVDD + 0.3 V
COMP1, COMP2 (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . â0.3 V to AVDD + 0.3 V
EXTIO, BIASJ (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . â0.3 V to AVDD + 0.3 V
EXTLO (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . â0.3 V to 0.3 V
Peak input current (any input) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 mA
Peak total input current (all inputs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . â30 mA
Operating free-air temperature range, TA: THS5641I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . â40°C to 85°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . â 65°C to 150°C
Lead temperature 1,6 mm (1/16 inch) from the case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
â Stresses beyond those listed under âabsolute maximum ratingsâ 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 ârecommended operating conditionsâ is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. Measured with respect to AGND.
2. Measured with respect to DGND.
⢠POST OFFICE BOX 655303 DALLAS, TEXAS 75265
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