TLV1544C, TLV1544I, TLV1548C, TLV1548I, TLV1548M
LOW-VOLTAGE 10-BIT ANALOG-TO-DIGITAL CONVERTERS
WITH SERIAL CONTROL AND 4/8 ANALOG INPUTS
SLAS139C – DECEMBER 1996 – REVISED JANUARY 1999
13
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
11-to-1
Analog
MUX
Input
Data
Register
2-to-1
Sample-
and-
Hold
Function
SAR Latch
Threshold
Detect
10-to-1 Select
Output Shift Clock
Conversion
Clock
OSC
Invert
2-to-1
If_mode
Input Shift Clock
DSP§
SMCLK
Control
State
Machine
If_mode
Invert
EOC
DATA OUT
INV CLK
CS
FS
I/O CLK
REF+
REF–
A0–A7
TEST 0–2
DATA IN
Vref
REF+
REF–
Microprocessor
Successive approximation register
If_mode = 1, microprocessor interface mode
§ If_mode = 0, DSP interface mode
Figure 5. Clock Scheme
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, VCC (see Note 1)
– 0.5 V to 6.5 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range, VI (any input)
– 0.3 V to VCC + 0.3 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output voltage range, VO
– 0.3 V to VCC + 0.3 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Positive reference voltage, Vref+
VCC + 0.1 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Negative reference voltage, Vref–
– 0.1 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Peak input current, II (any input)
±20 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Peak total input current (all inputs)
– 30 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, TA: TLV1544C, TLV1548C
0
°C to 70°C
. . . . . . . . . . . . . . . . . . . . . . . .
TLV1544I, TLV1548I
– 40
°C to 85°C
. . . . . . . . . . . . . . . . . . . . . . . .
TLV1548M
– 55
°C to 125°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, Tstg
–65
°C to 150°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature 1,6 mm (1/16 inch) from the 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.
NOTE 1: All voltage values are with respect to GND with REF – and GND wired together (unless otherwise noted).