参数资料
| 型号： | LT1994MPDD#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 14/20页 |
| 文件大小： | 0K |
| 描述： | IC DIFF AMP/DRIVER LN 8-MSOP |
| 标准包装： | 2,500 |
| 放大器类型： | 差分 |
| 电路数： | 1 |
| 输出类型： | 满摆幅 |
| 转换速率： | 65 V/µs |
| 增益带宽积： | 70MHz |
| 电流 - 输入偏压： | 18µA |
| 电压 - 输入偏移： | 3000µV |
| 电流 - 电源： | 14.8mA |
| 电流 - 输出 / 通道： | 85mA |
| 电压 - 电源，单路/双路(±)： | 2.375 V ~ 12.6 V，±1.188 V ~ 6.3 V |
| 工作温度： | -55°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-WFDFN 裸露焊盘 |
| 供应商设备封装： | 8-DFN-EP（3x3） |
| 包装： | 带卷 (TR) |
3
1994fb
LT1994
SYMBOL
PARAMETER
CONDITIONS
C/I GRADES
H/MP GRADES
UNITS
MIN
TYP
MAX
MIN
TYP
MAX
VOSDIFF
Differential Offset Voltage
(Input Referred)
VS = 2.375V, VICM = VS/4
VS = 3V
VS = 5V
VS = ±5V
l
±2
±3
±2
±3
mV
ΔVOSDIFF/ΔT Differential Offset Voltage Drift
(Input Referred)
VS = 2.375V, VICM = VS/4
VS = 3V
VS = 5V
VS = ±5V
3
μV/°C
IB
Input Bias Current (Note 6)
VS = 2.375V, VICM = VS/4
VS = 3V
VS = 5V
VS = ±5V
l
–45
–18
–3
–45
–18
–3
μA
IOS
Input Offset Current (Note 6)
VS = 2.375V, VICM = VS/4
VS = 3V
VS = 5V
VS = ±5V
l
±0.2
±2
±3
±4
±0.2
±2
±3
±4
μA
RIN
Input Resistance
Common Mode
Differential Mode
700
4.5
700
4.5
k
Ω
k
Ω
CIN
Input Capacitance
Differential
2
pF
en
Differential Input Referred Noise
Voltage Density
f = 50kHz
3
nV/√Hz
in
Input Noise Current Density
f = 50kHz
2.5
pA/√Hz
enVOCM
Input Referred Common Mode Output
Noise Voltage Density
f = 50kHz, VOCM Shorted to Ground
15
nV/√Hz
VICMR
(Note 7)
Input Signal Common Mode Range
VS = 3V
VS = ±5V
l
0
–5
1.75
3.75
0
–5
1.75
3.75
V
CMRRI
(Note 8)
Input Common Mode Rejection Ratio
(Input Referred)
ΔVICM/ΔVOSDIFF
VS = 3V, ΔVICM = 0.75V
l
55
85
55
85
dB
CMRRIO
(Note 8)
Output Common Mode Rejection Ratio
(Input Referred)
ΔVOCM/ΔVOSDIFF
VS = 5V, ΔVOCM = 2V
l
65
85
65
85
dB
PSRR
(Note 9)
Differential Power Supply Rejection
(
ΔVS/ΔVOSDIFF)
VS = 3V to ±5V
l
69
105
69
105
dB
PSRRCM
(Note 9)
Output Common Mode Power Supply
Rejection (
ΔVS/ΔVOSCM)
VS = 3V to ±5V
l
45
70
45
70
dB
GCM
Common Mode Gain (ΔVOUTCM/ΔVOCM) VS = ±2.5V
l
1V/V
Common Mode Gain Error
100 (GCM – 1)
VS = ±2.5V
l
–0.15
±1
%
BAL
Output Balance (
ΔVOUTCM/ΔVOUTDIFF)
ΔVOUTDIFF = 2V
Single-Ended Input
Differential Input
l
–65
–71
–46
–50
–65
–71
–46
–50
dB
VOSCM
Common Mode Offset Voltage
(VOUTCM – VOCM)
VS = 2.375V, VICM = VS/4
VS = 3V
VS = 5V
VS = ±5V
l
±2.5
±25
±30
±40
±2.5
±25
±30
±40
mV
ELECTRICAL CHARACTERISTICS The l denotes the specications which apply over the full operating
temperature range, otherwise specications are at TA = 25°C. V+ = 3V, V– = 0V, VCM = VOCM = VICM = mid-supply, VSHDN = OPEN,
RI = RF = 499Ω, RL = 800Ω to a mid-supply voltage (See Figure 1) unless otherwise noted. VS is dened (V+ – V–). VOUTCM is dened
as (VOUT+ + VOUT–)/2. VICM is dened as (VIN+ + VIN–)/2. VOUTDIFF is dened as (VOUT+ – VOUT–). VINDIFF is dened as (VIN+ – VIN–).
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