THS1401 Datasheet, PDF (5/22 Pages) Texas Instruments – 14-BIT, 1/3/8 MSPS DSP COMPATIBLE ANALOG-TO-DIGITAL CONVERTERS WITH INTERNAL REFERENCE AND PGA

THS1401, THS1403, THS1408
14-BIT, 1/3/8 MSPS DSP COMPATIBLE ANALOG-TO-DIGITAL CONVERTERS
WITH INTERNAL REFERENCE AND PGA
SLAS248 – DECEMBER 1999
electrical characteristics (continued)
PARAMETER
TEST CONDITIONS
Reference Voltage
VBG
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
MIN TYP MAX UNIT
1.425
1.5 1.575 V
40
kΩ
2.5
V
0.5
V
2
V
5%
40
ppm/°C
200
ppm/V
0
0
–Vref
0
AVDD V
AVDD V
Vref V
25
kΩ
7 dB
1
dB
±0.25 dB
2
V
0.8 V
5
pF
±1 µA
2.6
V
0.4 V
±10 µA
0.1
1
0.1
3
0.1
8
9.5
1 MHz
3 MHz
8 MHz
25 ns
Cycles
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