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| 型号： | AD8305ACPZ-RL7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 18/24页 |
| 文件大小： | 0K |
| 描述： | IC LOGARITH CONV 100DB 16-LFCSP |
| 设计资源： | Interfacing ADL5315 to Translinear Logarithmic Amplifier (CN0056) Interfacing ADL5317 High Side Current Mirror to a Translinear Logarithmic Amplifier in an Avalanche Photodiode Power Detector |
| 标准包装： | 1 |
| 类型： | 对数转换器 |
| 应用： | 光纤 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-VFQFN 裸露焊盘，CSP |
| 供应商设备封装： | 16-LFCSP-VQ |
| 包装： | 标准包装 |
| 产品目录页面： | 550 (CN2011-ZH PDF) |
| 其它名称： | AD8305ACPZ-RL7DKR |
AD8305
Rev. B | Page 3 of 24
SPECIFICATIONS
VP = 5 V, VN = 0 V, TA = 25°C, RREF = 200 kΩ, and VRDZ connected to VREF, unless otherwise noted.
Table 1.
Parameter
Conditions
Min
Typ
Max
Unit
INPUT INTERFACE
Pin 4, INPT, Pin 3, IREF
Specified Current Range, IPD
Flows toward INPT pin
10
nA
1
mA
Input Current Min/Max Limits
Flows toward INPT pin
10
mA
Reference Current, IREF, Range
Flows toward IREF pin
10
nA
1
mA
Summing Node Voltage
Internally preset; may be altered by the user
0.46
0.5
0.54
V
Temperature Drift
40°C < TA < +85°C
0.015
mV/°C
Input Offset Voltage
VINPT VSUM, VIREF VSUM
20
+20
mV
LOGARITHMIC OUTPUT
Pin 9, VLOG
Logarithmic Slope
190
200
210
mV/dec
40°C < TA < +85°C
185
215
mV/dec
Logarithmic Intercept1
0.3
1
1.7
nA
40°C < TA < +85°C
0.1
2.5
nA
Law Conformance Error
10 nA < IPD < 1 mA
0.1
0.4
dB
Wideband Noise2
IPD > 1 μA
0.7
mV√Hz
Small Signal Bandwidth2
IPD > 1 μA
0.7
MHz
Maximum Output Voltage
1.7
V
Minimum Output Voltage
Limited by VN = 0 V
0.01
V
Output Resistance
4.375
5
5.625
kΩ
REFERENCE OUTPUT
Pin 2, VREF
Voltage With Reference to Ground
2.435
2.5
2.565
V
40°C < TA < +85°C
2.4
2.6
V
Maximum Output Current
Sourcing (grounded load)
20
mA
Incremental Output Resistance
Load current < 10 mA
2
Ω
OUTPUT BUFFER
Pin 10, BFIN; Pin 11, SCAL; Pin 12, VOUT
Input Offset Voltage
20
+20
mV
Input Bias Current
Flowing out of Pin 10 or Pin 11
0.4
mA
Incremental Input Resistance
35
MΩ
Output Range
RL = 1 kΩ to ground
VP 0.1
V
Incremental Output Resistance
Load current < 10 mA
0.5
Ω
Peak Source/Sink Current
25
mA
Small Signal Bandwidth
GAIN = 1
15
MHz
Slew Rate
0.2 V to 4.8 V output swing
15
V/μs
POWER SUPPLY
Pin 8, VPOS; Pin 6 and Pin 7, VNEG
Positive Supply Voltage
(VP VN) ≤ 12 V
3
5
12
V
Quiescent Current
5.4
6.5
mA
Negative Supply Voltage (Optional)
(VP VN) ≤ 12 V
5.5
0
V
1 Other values of logarithmic intercept can be achieved by adjusting RREF.
2 Output noise and incremental bandwidth are functions of input current, measured using output buffer connected for GAIN = 1.
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