THS1401_15 Datasheet, PDF (6/28 Pages) Texas Instruments – 14-BIT, 1/3/8 MSPS, DSP-COMPATIBLE ANALOG-TO-DIGITAL

THS1401
THS1403
THS1408
SLAS248D − DECEMBER 1999 − REVISED SEPTEMBER 2005
ELECTRICAL CHARACTERISTICS (Cont.)
Over operating free-air temperature range, AVDD = DVDD = 3.3V, unless otherwise noted.
PARAMETER
TEST CONDITIONS
Reference Voltage
Bandgap voltage, internal mode
Input impedance
Positive reference voltage, REF+
Negative reference voltage, REF−
Reference difference, ∆REF, REF+ − REF−
Accuracy, internal reference
Temperature coefficient
Voltage coefficient
Analog Inputs
Positive analog input, IN+
Negative analog input, IN−
Analog input voltage difference
Input impedance
∆AIN = IN+ − IN−, VREF = REF+ − REF−
PGA range
PGA step size
PGA gain error
Digital Inputs
VIH
High-level digital input
VIL
Low-level digital input
Input capacitance
Input current
Digital Outputs
VOH High-level digital output
VOL Low-level digital output
IOZ
Output current, high impedance
Clock Timing (CS low)
IOH = 50 µA
IOL = 50 µA
THS1401
fCLK Clock frequency
THS1403
THS1408
td
Output delay time
Latency
† _{This parameter is not production tested for Q- and M-suffix devices.}
MIN
1.425
0
0
−VREF
0
2
2.6
0.1†
0.1†
0.1†
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TYP MAX UNIT
1.5 1.575 V
40
kΩ
2.5
V
0.5
V
2
V
5%
40
ppm/°C
200
ppm/V
AVDD V
AVDD V
VREF V
25
kΩ
7 dB
1
dB
±0.25 dB
V
0.8 V
5
pF
±1 µA
V
0.4 V
±10 µA
1
1 MHz
3
3 MHz
8
8 MHz
25 ns
9.5
Cycles
6