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參數(shù)資料
| 型號： | MAX4039EUB+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 4/22頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC OP AMP R-R W/REF 10-UMAX |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 放大器類型： | 通用 |
| 電路數(shù)： | 1 |
| 輸出類型： | 滿擺幅 |
| 轉(zhuǎn)換速率： | 0.004 V/µs |
| 增益帶寬積： | 4kHz |
| 電流 - 輸入偏壓： | 1pA |
| 電壓 - 輸入偏移： | 200µV |
| 電流 - 電源： | 3µA |
| 電流 - 輸出 / 通道： | 13mA |
| 電壓 - 電源，單路/雙路(±)： | 1.8 V ~ 3.6 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 10-TFSOP，10-MSOP（0.118"，3.00mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 10-µMAX |
| 包裝： | 帶卷 (TR) |
MAX4036–MAX4039
Low IBIAS, +1.4V/800nA, Rail-to-Rail Op Amps
with +1.2V Buffered Reference
12
______________________________________________________________________________________
3)
Calculate R1:
4)
Choose the threshold voltage for VIN rising (VTHR).
In this example, choose VTHR = 2.0V.
5)
Calculate R2:
6)
Verify the threshold voltages with these formulas:
VIN rising:
VIN falling:
In this application, the MAX4036–MAX4039 supply cur-
rent will vary, depending on the output state of the
comparator.
Power Supplies and Layout
The MAX4036–MAX4039 operate from a single 1.4V
(MAX4036/MAX4038) or 1.8V (MAX4037/MAX4039) to
3.6V power supply. Bypass VDD with a 0.1F capacitor
to ground to minimize noise.
Good layout techniques optimize performance by
decreasing the amount of stray capacitance to the op
amp’s inputs and outputs. To decrease stray capaci-
tance, minimize trace lengths by placing external com-
ponents close to the device.
The exposed paddle (EP) on the TDFN packages of the
MAX4038 and MAX4039 is internally connected to the
device substrate, VSS. Connect the exposed paddle to
VSS or leave EP unconnected. Running traces below the
exposed paddle is not recommended.
Chip Information
MAX4036 TRANSISTOR COUNT: 49
MAX4037 TRANSISTOR COUNT: 119
MAX4038 TRANSISTOR COUNT: 146
MAX4039 TRANSISTOR COUNT: 146
PROCESS: BiCMOS
VV
RV
R
THF
THR
DD
=
×
1
3
VV
R
RR
R
THR
REF
=×
×
+
1
2
1
3
R
V
VR
R
V
Vk
k
M
k
THR
REF
2
1
3
1
20
1 2
210
1
210
1
10
325
.
=
×
=
×
=
ΩΩ
Ω
RR
V
M
V
k
HB
DD
13
10
05
24
210
.
=×
=
Ω
VREF
R3
R1
R2
VBATT
VBGOOD
VSS
VDD
IN+
REF
IN-
OUT
MAX4037
Figure 4. Battery Monitoring
Selector Guide
PART
NO. OF AMPLIFIERS
REFERENCE
MAX4036
1
—
MAX4037
1
√
MAX4038
2
—
MAX4039
2
√
Ordering Information (continued)
PART
TEMP RANGE
PIN-
PACKAGE
TOP
MARK
MAX4039EBL-T
-40°C to +85°C
9 UCSP
AEH
MAX4039ETB-T
-40°C to +85°C
10 TDFN-EP*
AAN
MAX4039EUB
-40°C to +85°C
10 MAX
—
-
Denotes a package containing lead.
*
EP = Exposed pad.
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