參數(shù)資料
型號： PGA308AIDRKT
廠商： TEXAS INSTRUMENTS INC
元件分類： 模擬信號調(diào)理
英文描述： SPECIALTY ANALOG CIRCUIT, PQCC10
封裝： 3 X 4 MM, GREEN, PLASTIC, SON-10
文件頁數(shù)： 24/29頁
文件大?。?/td> 962K
代理商： PGA308AIDRKT
SBOS440B – JULY 2008 – REVISED DECEMBER 2010
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
Boldface limits apply over the specified temperature range, TA = –40°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
UNIT
Coarse Offset Adjust
(RTI of Front-End PGA)
(6)
Range
VREF = +5V
–100
+100
mV
Resolution
7 bit + sign, VREF = +5V
1
mV
PSRR
2
mV/V
CMRR
1
mV/V
Drift
Coarse Offset Adjust = 100mV
1.2
mV/°C
Fine Offset Adjust (Zero DAC)
Programming Range
RTO of Front-End PGA
–0.5VREF
+0.5VREF
V
Output Voltage Range
0.1
VS – 0.1
V
Resolution
65,536 steps, 16-bit DAC, VREF = +5V
76
mV
Integral Nonlinearity
±6
LSB
Differential Nonlinearity
±0.5
LSB
Gain Error
±0.5
%
Gain Error Drift
±4
ppm/°C
Offset
±4
mV
Offset Drift
±10
mV/°C
PSRR
±200
mV/V
Output Amplifier
Output Fine Gain Adjust (Gain DAC)
Range
0.33
1
V/V
Resolution
65,536 steps, 16-bit DAC
10
mV/V
Integral Nonlinearity
±6
LSB
Differential Nonlinearity
±0.5
LSB
Gain Error
±0.2
%
Gain Drift
3
ppm/°C
Output Amplifier
Offset Voltage (RTI of Output Amplifier)
(6)
±3
mV
vs Temperature
±5
mV/°C
vs Supply Voltage, VS
±100
mV/V
Common-Mode Input Range
0
VS – 1.5
V
Input Bias Current
±100
pA
Amplifier Internal Gain
Gain Range Steps
2, 2.4, 3, 3.6, 4, 4.5, 6
2
6
V/V
Initial Gain Error
±0.05
±0.25
%
vs Temperature
±1
ppm/°C
Output Voltage Range
IOUT = 0.5mA
(7)
0.03
VS – 0.06
V
IOUT = 4mA
(7)
0.1
VS – 0.1
V
Output Short-Circuit Current
ISC
Sourcing/sinking
10
mA
Open-Loop Gain at 0.1Hz
106
dB
Gain-Bandwidth Product
2
MHz
Phase Margin
Gain = 2, CL = 200pF
45
deg
Output Resistance
RO
AC small-signal, open-loop, f = 1MHz, IOUT = 0, see
500
(6)
RTI = Referred-to-input.
(7)
Unless limited by the over/under-scale setting, or VCLAMP pin.
4
Copyright 2008–2010, Texas Instruments Incorporated
Product Folder Link(s): PGA308
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