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LT1790B

1-OUTPUT THREE TERM VOLTAGE REFERENCE, 3.3 V, PDSO6
1输出 三 TERM 电压 参考, 3.3 V, PDSO6

器件类别：半导体    模拟混合信号IC   

厂商名称：Linear ( ADI )

厂商官网：http://www.analog.com/cn/index.html

下载文档
参数 预览
器件参数
参数名称
属性值
功能数量
1
端子数量
6
最大输出电压
3.3 V
最小输出电压
3.3 V
最大工作温度
70 Cel
最小工作温度
0.0 Cel
最大供电/工作电压
18 V
最小供电/工作电压
3.8 V
额定供电电压
3.8 V
加工封装描述
塑料, SOT-23, 6 PIN
状态
ACTIVE
工艺
BIPOLAR
包装形状
矩形的
包装尺寸
SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH
表面贴装
Yes
端子形式
GULL WING
端子间距
0.9500 mm
端子涂层
锡 铅
端子位置
双
包装材料
塑料/环氧树脂
温度等级
COMMERCIAL
输出数
1
额定输出电压
3.3 V
模拟IC其它类型
三 TERM 电压 参考
最大电压温度系数
10 ppm/Cel
文档预览
LT1790
Micropower SOT-23
Low Dropout Reference Family
FEATURES
s
DESCRIPTIO
s
s
s
s
s
s
s
s
High Accuracy:
A Grade—0.05% Max
B Grade—0.1% Max
Low Drift:
A Grade—10ppm/
°
C Max
B Grade—25ppm/
°
C Max
Low Profile (1mm) ThinSOT
TM
Package
Low Supply Current: 60µA Max
Sinks and Sources Current
Low Dropout Voltage
Guaranteed Operational –40°C to 125°C
Wide Supply Range to 18V
Available Output Voltage Options: 1.25V, 2.048V,
2.5V, 3V, 3.3V, 4.096V and 5V
The LT
®
1790 is a family of SOT-23 micropower low
dropout series references that combine high accuracy and
low drift with low power dissipation and small package
size. These micropower references use curvature com-
pensation to obtain a low temperature coefficient and
trimmed precision thin-film resistors to achieve high
output accuracy. In addition, each LT1790 is post-pack-
age trimmed to greatly reduce the temperature coefficient
and increase the output accuracy. Output accuracy is
further assured by excellent line and load regulation.
Special care has been taken to minimize thermally induced
hysteresis.
The LT1790s are ideally suited for battery-operated sys-
tems because of their small size, low supply current and
reduced dropout voltage. These references provide supply
current and power dissipation advantages over shunt
references that must idle the entire load current to operate.
Since the LT1790 can also sink current, it can operate as
a micropower negative voltage reference with the same
performance as a positive reference.
, LTC and LT are registered trademarks of Linear Technology Corporation.
ThinSOT is a trademark of Linear Technology Corporation.
APPLICATIO S
s
s
s
s
s
Handheld Instruments
Negative Voltage References
Industrial Control Systems
Data Acquisition Systems
Battery-Operated Equipment
TYPICAL APPLICATIO
Typical V
OUT
Distribution for LT1790-2.5
50
45
167 UNITS
Positive Connection for LT1790-2.5
NUMBER OF UNITS
40
35
30
25
20
15
10
5
0
2.498
2.6V
≤
V
IN
≤
18V
0.1µF
4
LT1790-2.5
1, 2
6
1µF
V
OUT
= 2.5V
1790 TA01
U
LT1790B LIMITS
LT1790A LIMITS
2.499 2.500
2.501
OUTPUT VOLTAGE (V)
2.502
1790 TA02
U
U
1790fa
1
LT1790
ABSOLUTE
AXI U
RATI GS
Input Voltage .......................................................... 20V
Specified Temperature Range
Commercial ............................................ 0°C to 70°C
Industrial ............................................ – 40°C to 85°C
Output Short-Circuit Duration ......................... Indefinite
PACKAGE/ORDER I FOR ATIO
ORDER
PART NUMBER
LT1790ACS6-1.25
LT1790BCS6-1.25
LT1790ACS6-2.048
LT1790BCS6-2.048
LT1790ACS6-2.5
LT1790BCS6-2.5
LT1790ACS6-3
LT1790BCS6-3
LT1790ACS6-3.3
LT1790BCS6-3.3
LT1790ACS6-4.096
LT1790BCS6-4.096
LT1790ACS6-5
LT1790BCS6-5
LT1790AIS6-1.25
LT1790BIS6-1.25
LT1790AIS6-2.048
LT1790BIS6-2.048
LT1790AIS6-2.5
LT1790BIS6-2.5
LT1790AIS6-3
LT1790BIS6-3
LT1790AIS6-3.3
LT1790BIS6-3.3
LT1790AIS6-4.096
LT1790BIS6-4.096
LT1790AIS6-5
LT1790BIS6-5
TOP VIEW
GND 1
GND 2
DNC* 3
6 V
OUT
5 DNC*
4 V
IN
S6 PACKAGE
6-LEAD PLASTIC SOT-23
T
JMAX
= 150°C,
θ
JA
= 230°C/W
*DNC: DO NOT CONNECT
* The temperature grades and parametric grades are identified by a label on the shipping container. Consult LTC Marketing for parts specified with wider
operating temperature ranges.
AVAILABLE OPTIO S
TEMPERATURE RANGE
OUTPUT
VOLTAGE
1.250V
2.048V
2.500V
3.000V
3.300V
4.096V
5.000V
INITIAL
ACCURACY
0.05%
0.1%
0.05%
0.1%
0.05%
0.1%
0.05%
0.1%
0.05%
0.1%
0.05%
0.1%
0.05%
0.1%
TEMPERATURE
COEFFICEINT
10ppm/°C
25ppm/°C
10ppm/°C
25ppm/°C
10ppm/°C
25ppm/°C
10ppm/°C
25ppm/°C
10ppm/°C
25ppm/°C
10ppm/°C
25ppm/°C
10ppm/°C
25ppm/°C
0°C to 70°C
ORDER PART NUMBER
LT1790ACS6-1.25
LT1790BCS6-1.25
LT1790ACS6-2.048
LT1790BCS6-2.048
LT1790ACS6-2.5
LT1790BCS6-2.5
LT1790ACS6-3
LT1790BCS6-3
LT1790ACS6-3.3
LT1790BCS6-3.3
LT1790ACS6-4.096
LT1790BCS6-4.096
LT1790ACS6-5
LT1790BCS6-5
– 40°C to 85°C
ORDER PART NUMBER
LT1790AIS6-1.25
LT1790BIS6-1.25
LT1790AIS6-2.048
LT1790BIS6-2.048
LT1790AIS6-2.5
LT1790BIS6-2.5
LT1790AIS6-3
LT1790BIS6-3
LT1790AIS6-3.3
LT1790BIS6-3.3
LT1790AIS6-4.096
LT1790BIS6-4.096
LT1790AIS6-5
LT1790BIS6-5
1790fa
2
U
U
W
W W
U
U
W
(Note 1)
Operating Temperature Range
(Note 2) ........................................... – 40°C to 125°C
Storage Temperature Range
(Note 3) ........................................... – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
OUTPUT
VOLTAGE
1.250V
2.048V
2.500V
3.000V
3.300V
4.096V
5.000V
S6
PART MARKING*
LTXT
LTXU
LTPZ
LTQA
LTXW
LTQB
LTQC
LT1790
1.25V ELECTRICAL CHARACTERISTICS
PARAMETER
Output Voltage (Notes 3, 4)
CONDITIONS
LT1790A
LT1790B
LT1790AC
LT1790AI
LT1790BC
LT1790BI
Output Voltage Temperature Coefficient (Note 5)
T
MIN
≤
T
A
≤
T
MAX
LT1790A
LT1790B
2.6V
≤
V
IN
≤
18V
The
q
denotes specifications that apply over the specified
temperature range, otherwise specifications are at T
A
= 25°C. C
L
= 1µF and V
IN
= 2.6V, unless otherwise noted.
MIN
1.24937
–0.05
1.24875
–0.10
q
q
q
q
q
q
q
q
q
q
q
TYP
1.250
1.250
1.250
1.250
1.250
1.250
MAX
1.25062
0.05
1.25125
0.10
1.25150
0.120
1.25219
0.175
1.25344
0.275
1.25516
0.4125
10
25
170
220
160
250
180
250
2.15
2.50
2.90
2.95
60
75
125
UNITS
V
%
V
%
V
%
V
%
V
%
V
%
ppm/°C
ppm/°C
ppm/V
ppm/V
ppm/mA
ppm/mA
ppm/mA
ppm/mA
V
V
V
V
µA
µA
µA
µs
µV
P-P
µV
RMS
ppm/√kHr
ppm
ppm
1.24850
–0.120
1.24781
–0.175
1.24656
–0.275
1.24484
–0.4125
5
12
50
100
Line Regulation
Load Regulation (Note 6)
I
OUT
Source = 5mA, V
IN
= 2.8V
q
I
OUT
Sink = 1mA, V
IN
= 3.2V
q
120
Minimum Operating Voltage (Note 7)
V
IN
,
∆V
OUT
= 0.1%
I
OUT
= 0mA
I
OUT
Source = 5mA
I
OUT
Sink = 1mA
q
q
q
1.95
Supply Current
Minimum Operating Current—
Negative Output (See Figure 7)
Turn-On Time
Output Noise (Note 8)
Long-Term Drift of Output Voltage (Note 9)
Hysteresis (Note 10)
No Load
q
35
100
250
10
14
50
q
q
V
OUT
= – 1.25V,
±0.1%
C
LOAD
= 1µF
0.1Hz
≤
f
≤
10Hz
10Hz
≤
f
≤
1kHz
∆T
= 0°C to 70°C
∆T
= – 40°C to 85°C
40
100
1790fa
3
LT1790
2.048V ELECTRICAL CHARACTERISTICS
PARAMETER
Output Voltage (Notes 3, 4)
CONDITIONS
LT1790A
LT1790B
LT1790AC
LT1790AI
LT1790BC
LT1790BI
Output Voltage Temperature Coefficient (Note 5)
T
MIN
≤
T
A
≤
T
MAX
LT1790A
LT1790B
2.8V
≤
V
IN
≤
18V
The
q
denotes specifications that apply over the specified
temperature range, otherwise specifications are at T
A
= 25°C. C
L
= 1µF and V
IN
= 2.8V, unless otherwise noted.
MIN
2.04697
–0.05
2.04595
–0.10
q
q
q
q
q
q
q
q
q
q
q
TYP
2.048
2.048
2.048
2.048
2.048
2.048
MAX
2.04902
0.05
2.05005
0.10
2.05046
0.120
2.05158
0.175
2.05363
0.275
2.05645
0.4125
10
25
170
220
200
280
260
450
100
500
750
450
60
75
125
UNITS
V
%
V
%
V
%
V
%
V
%
V
%
ppm/°C
ppm/°C
ppm/V
ppm/V
ppm/mA
ppm/mA
ppm/mA
ppm/mA
mV
mV
mV
mV
µA
µA
µA
µs
µV
P-P
µV
RMS
ppm/√kHr
ppm
ppm
2.04554
–0.120
2.04442
–0.175
2.04237
–0.275
2.03955
–0.4125
5
12
50
120
Line Regulation
Load Regulation (Note 6)
I
OUT
Source = 5mA
q
I
OUT
Sink = 3mA
q
130
Dropout Voltage (Note 7)
V
IN
– V
OUT
,
∆V
OUT
= 0.1%
I
OUT
= 0mA
I
OUT
Source = 5mA
I
OUT
Sink = 3mA
q
q
q
50
Supply Current
Minimum Operating Current—
Negative Output (See Figure 7)
Turn-On Time
Output Noise (Note 8)
Long-Term Drift of Output Voltage (Note 9)
Hysteresis (Note 10)
No Load
q
35
100
350
22
41
50
q
q
V
OUT
= – 2.048V, 0.1%
C
LOAD
= 1µF
0.1Hz
≤
f
≤
10Hz
10Hz
≤
f
≤
1kHz
∆T
= 0°C to 70°C
∆T
= – 40°C to 85°C
40
100
1790fa
4
LT1790
2.5V ELECTRICAL CHARACTERISTICS
PARAMETER
Output Voltage (Notes 3, 4)
CONDITIONS
LT1790A
LT1790B
LT1790AC
LT1790AI
LT1790BC
LT1790BI
Output Voltage Temperature Coefficient (Note 5)
T
MIN
≤
T
A
≤
T
MAX
LT1790A
LT1790B
3V
≤
V
IN
≤
18V
The
q
denotes specifications that apply over the specified
temperature range, otherwise specifications are at T
A
= 25°C. C
L
= 1µF and V
IN
= 3V, unless otherwise noted.
MIN
2.49875
–0.05
2.4975
–0.10
q
q
q
q
q
q
q
q
q
q
q
TYP
2.5
2.5
2.5
2.5
2.5
2.5
MAX
2.50125
0.05
2.5025
0.10
2.5030
0.120
2.50438
0.175
2.50688
0.275
2.51031
0.4125
10
25
170
220
160
250
110
300
100
120
450
250
60
80
125
UNITS
V
%
V
%
V
%
V
%
V
%
V
%
ppm/°C
ppm/°C
ppm/V
ppm/V
ppm/mA
ppm/mA
ppm/mA
ppm/mA
mV
mV
mV
mV
µA
µA
µA
µs
µV
P-P
µV
RMS
ppm/√kHr
ppm
ppm
2.4970
–0.120
2.49563
–0.175
2.49313
–0.275
2.48969
–0.4125
5
12
50
80
Line Regulation
Load Regulation (Note 6)
I
OUT
Source = 5mA
q
I
OUT
Sink = 3mA
q
70
Dropout Voltage (Note 7)
V
IN
– V
OUT
,
∆V
OUT
= 0.1%
I
OUT
= 0mA
I
OUT
Source = 5mA
I
OUT
Sink = 3mA
q
q
q
50
Supply Current
Minimum Operating Current—
Negative Output (See Figure 7)
Turn-On Time
Output Noise (Note 8)
Long-Term Drift of Output Voltage (Note 9)
Hysteresis (Note 10)
No Load
q
35
100
700
32
48
50
q
q
V
OUT
= – 2.5V, 0.1%
C
LOAD
= 1µF
0.1Hz
≤
f
≤
10Hz
10Hz
≤
f
≤
1kHz
∆T
= 0°C to 70°C
∆T
= – 40°C to 85°C
40
100
1790fa
5
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器件捷径:
00 01 02 03 04 05 06 07 08 09 0A 0C 0F 0J 0L 0M 0R 0S 0T 0Z 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 1H 1K 1M 1N 1P 1S 1T 1V 1X 1Z 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 2G 2K 2M 2N 2P 2Q 2R 2S 2T 2W 2Z 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F 3G 3H 3J 3K 3L 3M 3N 3P 3R 3S 3T 3V 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4M 4N 4P 4S 4T 50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5E 5G 5H 5K 5M 5N 5P 5S 5T 5V 60 61 62 63 64 65 66 67 68 69 6A 6C 6E 6F 6M 6N 6P 6R 6S 6T 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7M 7N 7P 7Q 7V 7W 7X 80 81 82 83 84 85 86 87 88 89 8A 8D 8E 8L 8N 8P 8S 8T 8W 8Y 8Z 90 91 92 93 94 95 96 97 98 99 9A 9B 9C 9D 9F 9G 9H 9L 9S 9T 9W
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