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参数资料
| 型号： | LTC6421IUDC-20#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 10/16页 |
| 文件大小： | 0K |
| 描述： | IC ADC DRIVER DIFF 20-QFN |
| 标准包装： | 2,500 |
| 类型： | ADC 驱动器 |
| 应用： | 数据采集 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-WFQFN 裸露焊盘 |
| 供应商设备封装： | 20-QFN（3x4） |
| 包装： | 带卷 (TR) |
LTC6421-20
3
642120fb
DC ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Input/Output Characteristic
GDIFF
Gain
VIN = ±100mV Differential
l
19.6
20
20.4
dB
ΔG
Gain Matching
Channel-to-Channel
l
±0.1
±0.25
dB
TCGAIN
Gain Temperature Drift
VIN = ±100mV Differential
l
0.0015
dB/°C
VSWINGMIN
Output Swing Low (VOCM = 1.5V)
Each Output, VIN = ±400mV Differential
l
0.1
0.25
V
VSWINGMAX
Output Swing High (VOCM = 1.5V)
Each Output, VIN = ±400mV Differential
l
2.75
2.9
V
VOUTDIFFMAX
Maximum Differential Output Swing
l
5
5.6
VP-P
IOUT
Output Current Drive
2VP-P, OUT (Note 10)
l
10
mA
VOS
Input Offset Voltage
Differential
l
–2
±0.4
2
mV
TCVOS
Input Offset Voltage Drift
Differential
l
1.4
μV/°C
IVRMIN
Input Common Mode Voltage Range, MIN
l
1V
IVRMAX
Input Common Mode Voltage Range, MAX
l
1.6
V
RINDIFF
Input Resistance (+IN, –IN)
Differential
l
170
200
230
Ω
ΔRIN
Input Impedance Matching
Channel-to-Channel
l
±1
±2.5
%
CINDIFF
Input Capacitance (+IN, –IN)
Differential, Includes Parasitic
1
pF
ROUTDIFF
Output Resistance (+OUT, –OUT)
Differential
l
20
25
36
Ω
CMRR
Common Mode Rejection Ratio
Input Common Mode Voltage 1V to 1.6V
l
45
68
dB
Output Common Mode Voltage Control
GCM
Common Mode Gain
VOCM = 1V to 1.6V
1
V/V
VOCMMIN
Output Common Mode Range, MIN
l
1V
VOCMMAX
Output Common Mode Range, MAX
l
1.6
V
VOSCM
Common Mode Offset Voltage
VOCM = 1.25V to 1.5V
l
–10
±2
10
mV
TCVOSCM
Common Mode Offset Voltage Drift
l
6
μV/°C
IVOCM
VOCM Input Current
l
–15
–3
0
μA
ENABLEx Pins (x = A, B)
VIL
ENABLEx Input Low Voltage
l
0.8
V
VIH
ENABLEx Input High Voltage
l
2.4
V
ENABLEx Input Current
ENABLEx ≤ 0.8V
ENABLEx ≥ 2.4V
l
1.5
±0.5
3
μA
Power Supply
VS
Operating Supply Range
l
2.85
3
3.5
V
IS
Supply Current
ENABLEx ≤ 0.8V; per Amplier
l
40
50
mA
ISHDN
Shutdown Supply Current
ENABLEx ≥ 2.4V; per Amplier,
Inputs Floating
l
13
mA
PSRR
Power Supply Rejection Ratio (Differential
Outputs)
V+ = 2.85V to 3.5V
l
55
86
dB
The
l denotes the specications which apply over the full operating
temperature range, otherwise specications are at TA = 25°C. V+ = 3V, V– = 0V, +IN = –IN = VOCM = 1.25V, ENABLE = 0V, No RL unless
otherwise noted.
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