THS1401-EP Datasheet, PDF (6/27 Pages) Texas Instruments – 14-BIT, 1/3/8 MSPS DSP COMPATIBLE ANALOG-TO-DIGITAL CONVERTERS WITH INTERNAL REFERENCE AND PGA

THS1401-EP THS1403-EP THS1408-EP
14-BIT, 1/3/8 MSPS DSP COMPATIBLE ANALOG-TO-DIGITAL CONVERTERS
WITH INTERNAL REFERENCE AND PGA
SGLS129A – JULY 2002 – REVISED NOVEMBER 2002
electrical characteristics over recommended operating free-air temperature range,
AV_DD = DV_DD = 3.3 V (unless otherwise noted) (continued)
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNIT
Reference Voltage
VBG
Bandgap voltage, internal mode
Input impedance
1.425
1.5 1.575 V
40
kΩ
Positive reference voltage, REF+
2.5
V
Negative reference voltage, REF–
0.5
V
Reference difference, ∆REF, REF+ – REF–
2
V
Accuracy, internal reference
5%
Temperature coefficient
40
ppm/°C
Voltage coefficient
200
ppm/V
Analog Inputs
Positive analog input, IN+
Negative analog input, IN–
Analog input voltage difference
Input impedance
∆Ain = IN+ – IN–, Vref = REF+ – REF–
0
0
–Vref
AVDD V
AVDD V
Vref V
25
kΩ
PGA range
0
7 dB
PGA step size
1
dB
PGA gain error
±0.25 dB
Digital Inputs
VIH
High-level digital input
VIL
Low-level digital input
Input capacitance
2
V
0.8 V
5
pF
Input current
±1 µA
Digital Outputs
VOH High-level digital output
VOL Low-level digital output
IOZ
Output current, high impedance
Clock Timing (CS low)
fCLK Clock frequency
IOH = 50 µA
IOL = 50 µA
THS1401
THS1403
THS1408
2.6
V
0.4 V
±10 µA
0.1^†
1
1 MHz
0.1^†
3
3 MHz
0.1^†
8
8 MHz
td
Output delay time
Latency
† _{This parameter is not production tested.}
25 ns
9.5
Cycles
6
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