 English |
|
|
|
|
|
|
|
| PGA308_16 Datasheet, PDF (5/30 Pages) Texas Instruments – Programmable Gain and Offset | |||
| |||
| ◁ |
PGA308
www.ti.com
SBOS440B â JULY 2008 â REVISED DECEMBER 2010
ELECTRICAL CHARACTERISTICS (continued)
Boldface limits apply over the specified temperature range, TA = â40°C to +125°C.
At TA = +25°C, VS = +5V, GND = 0V, DOUT/VCLAMP = +5V, and VREF = +5V, unless otherwise noted.
PGA308
PARAMETER
CONDITIONS
MIN
TYP
MAX
Over- and Under-Scale Limits
Over-Scale Thresholds
OS0
VLIM = 4V, register-selectable ratio of VLIM
HL[2:0] (CFG1 register D[5:3]) = 000
0.97
0.9805
0.99
OS1
HL[2:0] (CFG1 register D[5:3]) = 001
0.9588
0.9688
0.9788
OS2
HL[2:0] (CFG1 register D[5:3]) = 010
0.9509
0.9609
0.9709
OS3
HL[2:0] (CFG1 register D[5:3]) = 011
0.9392
0.9492
0.9492
OS4
HL[2:0] (CFG1 register D[5:3]) = 100
0.8416
0.8516
0.8616
OS5
HL[2:0] (CFG1 register D[5:3]) = 101
0.7673
0.7773
0.7873
OS6
HL[2:0] (CFG1 register D[5:3]) = 110
0.6189
0.6289
0.6389
OS7
HL[2:0] (CFG1 register D[5:3]) = 111
0.5603
0.5703
0.5803
Over-Scale Threshold Tempco
±3
Over-Scale Amplifier Offset
±9
Over-Scale Amplifier Offset Drift
±10
Under-Scale Thresholds
US7
VLIM = 5V, register-selectable ratio of VLIM
LL[2:0] (CFG1 register D[2:0]) = 111
0.0487
0.0547
0.0607
US6
LL[2:0] (CFG1 register D[2:0]) = 110
0.04478
0.05078
0.05678
US5
LL[2:0] (CFG1 register D[2:0]) = 101
0.04088
0.04688
0.05288
US4
LL[2:0] (CFG1 register D[2:0]) = 100
0.03306
0.03906
0.04506
US3
LL[2:0] (CFG1 register D[2:0]) = 011
0.02916
0.03516
0.04116
US2
LL[2:0] (CFG1 register D[2:0]) = 010
0.02525
0.03125
0.03725
US1
LL[2:0] (CFG1 register D[2:0]) = 001
0.01743
0.02343
0.02943
US0
LL[2:0] (CFG1 register D[2:0]) = 000
0.01353
0.01953
0.02553
Under-Scale Threshold Tempco
±3
Under-Scale Amplifier Offset
±9
Under-Scale Amplifier Offset Drift
±10
Output Voltage Clamp
Input Voltage Range
Input Bias Current
VCLAMP ⤠VS, VS = +5V
1.25
4.95
±60
VOUT Clamp Point
Fault Monitor Circuit
(External Comparators)
VCLAMP â 0.05
VCLAMP
VCLAMP + 0.05
INP_HI Comparator Threshold
INN_HI Comparator Threshold
Fault Detect Mode Select = 0 (bridge fault); see CFG1
register
Smaller of (VS â 1.2) or (0.65VFLT)
INP_LO Comparator Threshold
INN_LO Comparator Threshold
Fault Detect Mode Select = 0 (bridge fault); see CFG1
register
Larger of (0.1V) or (0.35VFLT)
Fault Monitor Reference
INP_HI Comparator Threshold
INN_HI Comparator Threshold
VFLT Fault Monitor Reference; see CFG1 register, FLT REF bit
sets VFLT
Fault Detect Mode Select = 1 (common-mode fault); see
CFG1 register
VS or VREF
VS â 1.2
INP_LO Comparator Threshold
INN_LO Comparator Threshold
Fault Detect Mode Select = 1 (common-mode fault); see
70
CFG1 register
100
130
Comparator Hysteresis
7
Comparator Input Offset Voltage
±10
Fault Monitor Circuit
(Internal Comparators)
A1SAT_LO Comparator Threshold
Threshold is amplifier negative saturation voltage
100
A2SAT_LO Comparator Threshold
A1SAT_HI Comparator Threshold
A2SAT_HI Comparator Threshold
Threshold is amplifier positive saturation voltage
VS â 0.12
A3SAT_LO Comparator Threshold
Threshold is amplifier negative saturation voltage
50
VIN1, VIN2 Pull-up Current Sources
Pull-Up Current Source
IPU
Current Source Matching
Register-selectable
15
30
45
±1.5
±7
Current Source Tempco
±5
UNIT
V/V
V/V
V/V
V/V
V/V
V/V
V/V
V/V
ppm/°C
mV
mV/°C
V/V
V/V
V/V
V/V
V/V
V/V
V/V
V/V
ppm/°C
mV
mV/°C
V
nA
V
V
V
V
V
mV
mV
mV
mV
V
mV
nA
nA
pA/°C
Copyright © 2008â2010, Texas Instruments Incorporated
Product Folder Link(s): PGA308
Submit Documentation Feedback
5
|
▷ |
German
Russian
Spanish
Italian
Polish
Chinese
Japanese
Korean
French
Portuguese