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参数资料
型号： PGA112AIDGSRG4
厂商： TEXAS INSTRUMENTS INC
元件分类： 模拟信号调理
英文描述： SPECIALTY ANALOG CIRCUIT, PDSO10
封装： GREEN, PLASTIC, MSOP-10
文件页数： 23/47页
文件大小： 1545K
代理商： PGA112AIDGSRG4
ELECTRICAL CHARACTERISTICS: VS = AVDD = DVDD = +5V
PGA112
,, PGA113
PGA116, PGA117
www.ti.com ............................................................................................................................................ SBOS424B – MARCH 2008 – REVISED SEPTEMBER 2008
Boldface limits apply over the specified temperature range, TA = –40°C to +125°C.
At TA = +25°C, RL = 10k//CL = 100pF connected to DVDD/2, and VREF = GND, unless otherwise noted.
PGA112, PGA113, PGA116, PGA117
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
OFFSET VOLTAGE
Input Offset Voltage
VOS
AVDD = DVDD = +5V, VREF = VIN = AVDD/2, VCM = 2.5V
±25
±100
V
AVDD = DVDD = +5V, VREF = VIN = AVDD/2, VCM = 4.5V
±75
±325
V
vs Temperature, –40°C to +125°C
dVOS/dT
AVDD = DVDD = +5V, VCM = 2.5V
0.35
1.2
V/°C
vs Temperature, –40°C to +85°C
AVDD = DVDD = +5V, VCM = 2.5V
0.15
0.9
V/°C
vs Temperature, –40°C to +125°C
AVDD = DVDD = +5V, VCM = 4.5V
0.6
1.8
V/°C
vs Temperature, –40°C to +85°C
AVDD = DVDD = +5V, VCM = 4.5V
0.3
1.3
V/°C
AVDD = DVDD = +2.2V to +5.5V, VCM = 0.5V,
vs Power Supply
PSRR
5
20
V/V
VREF = VIN = AVDD/2
AVDD = DVDD = +2.2V to +5.5V, VCM = 0.5V,
Over Temperature, –40°C to +125°C
5
40
V/V
VREF = VIN = AVDD/2
INPUT ON-CHANNEL CURRENT
Input On-Channel Current (Ch0, Ch1)
IIN
VREF = VIN = AVDD/2
±1.5
±5
nA
Over Temperature, –40°C to +125°C
VREF = VIN = AVDD/2
See Typical Characteristics
nA
INPUT VOLTAGE RANGE
Input Voltage Range
(1)
IVR
GND – 0.1
AVDD + 0.1
V
Overvoltage Input Range
No Output Phase Reversal
(2)
GND – 0.3
AVDD + 0.3
V
INPUT IMPEDANCE (Channel On)
(3)
Channel Input Capacitance
CCH
2
pF
Channel Switch Resistance
RSW
150
Amplifier Input Capacitance
CAMP
3
pF
Amplifier Input Resistance
RAMP
Input Resistance to GND
10
G
VCAL/CH0
RIN
CAL1 or CAL2 Selected
100
k
GAIN SELECTIONS
Nominal Gains
Binary gains: 1, 2, 4, 8, 16, 32, 64, 128
1
128
Scope gains: 1, 2, 5, 10, 20, 50, 100, 200
1
200
DC Gain Error
G = 1
VOUT = GND + 85mV to DVDD – 85mV
0.006
0.1
%
1 < G
≤ 32
VOUT = GND + 85mV to DVDD – 85mV
0.1
%
G
≥ 50
VOUT = GND + 85mV to DVDD – 85mV
0.3
%
DC Gain Drift
G = 1
VOUT = GND + 85mV to DVDD – 85mV
0.5
ppm/°C
1 < G
≤ 32
VOUT = GND + 85mV to DVDD – 85mV
2
ppm/°C
G
≥ 50
VOUT = GND + 85mV to DVDD – 85mV
6
ppm/°C
Op Amp + Input = 0.9VCAL,
CAL2 DC Gain Error
(4)
0.02
%
VREF = VCAL = AVDD/2, G = 1
Op Amp + Input = 0.9VCAL,
CAL2 DC Gain Drift
(4)
2
ppm/°C
VREF = VCAL = AVDD/2, G = 1
Op Amp + Input = 0.1VCAL,
CAL3 DC Gain Error
(4)
0.02
%
VREF = VCAL = AVDD/2, G = 1
Op Amp + Input = 0.1VCAL,
CAL3 DC Gain Drift
(4)
2
ppm/°C
VREF = VCAL = AVDD/2, G = 1
INPUT IMPEDANCE (Channel Off)
(3)
Input Impedance
CCH
See Figure 1
2
pF
INPUT OFF-CHANNEL CURRENT
VREF = GND, VOFF-CHANNEL = AVDD/2,
Input Off-Channel Current (Ch0, Ch1)
(5)
ILKG
±0.05
±1
nA
VON-CHANNEL = AVDD/2 – 0.1V
VREF = GND, VOFF-CHANNEL = AVDD/2,
Over Temperature, –40°C to +125°C
See Typical Characteristics
VON-CHANNEL = AVDD/2 – 0.1V
Channel-to-Channel Crosstalk
130
dB
(1)
Gain error is a function of the input voltage. Gain error outside of the range (GND + 85mV
≤ VOUT ≤ DVDD – 85mV) increases to 0.5%
(typical).
(2)
Input voltages beyond this range must be current limited to < |10mA| through the input protection diodes on each channel to prevent
permanent destruction of the device.
(3)
See Figure 1.
(4)
Total VOUT error must be computed using input offset voltage error multiplied by gain. Includes op amp G = 1 error.
(5)
Maximum specification limitation limited by final test time and capability.
Copyright 2008, Texas Instruments Incorporated
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Product Folder Link(s): PGA112 PGA113 PGA116 PGA117
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