LINEAR TECHNOLOGY LTC2631 Technical data
LTC2631
FEATURES
n
Integrated Precision Reference
2.5V Full-Scale 10ppm/°C (LTC2631-L)
4.096V Full-Scale 10ppm/°C (LTC2631-H)
n
Maximum INL Error: 1LSB (LTC2631A-12)
n
Bidirectional Reference: Input or 10ppm/°C Output
n
400kHz I2C™ Interface
n
Nine Selectable Addresses (LTC2631-Z)
n
Low Noise (0.7mV
n
Guaranteed Monotonic Over Temperature
n
2.7V to 5.5V Supply Range (LTC2631-L)
n
Low Power Operation: 180µA at 3V
n
Power Down to 1.8µA Maximum (C and I Grades)
n
Power-On Reset to Zero or Mid-Scale Options
n
Double-Buffered Data Latches
n
Guaranteed Operation From –40°C to 125°C (H-Grade)
n
8-Lead TSOT-23 (ThinSOT™) Package
, 0.1Hz to 200kHz)
P-P
APPLICATIONS
n
Mobile Communications
n
Process Control and Industrial Automation
n
Automatic Test Equipment
n
Portable Equipment
n
Automotive
n
Optical Networking
Single 12-/10-/8-Bit I
V
OUT
DACs with
2
C
10ppm/°C Reference
DESCRIPTION
The LTC®2631 is a family of 12-, 10-, and 8-bit voltageoutput DACs with an integrated, high accuracy, low-drift
reference in an 8-lead TSOT-23 package. It has a rail-to-rail
output buffer that is guaranteed monotonic.
The LTC2631-L has a full-scale output of 2.5V, and operates from a single 2.7V to 5.5V supply. The LTC2631-H
has a full-scale output of 4.096V, and operates from a 4.5V
to 5.5V supply. A 10ppm/°C reference output is available
at the REF pin.
Each DAC can also operate in External Reference mode,
in which a voltage supplied to the REF pin sets the fullscale output.
2
The LTC2631 DACs use a 2-wire, I
interface. The LTC2631 operates in both the standard
mode (clock rate of 100kHz) and the fast mode (clock
rate of 400kHz).
The LTC2631 incorporates a power-on reset circuit. Options are available for reset to zero-scale or reset to midscale after power-up.
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. I2C and
ThinSOT are trademarks of Linear Technology Corporation. All other trademarks are the
property of their respective owners. Protected by U.S. Patents including 5396245, 5859606,
6891433, 6937178 and 7414561.
C-compatible serial
BLOCK DIAGRAM
CA0
SCL
SDA
I2C
ADDRESS
DECODE
I2C
INTERFACE
REGISTER
(LTC2631-M)
V
CC
CONTROL
DECODE LOGIC
INPUT
INTERNAL
REFERENCE
DAC
REGISTER
SWITCH
RESISTOR
DIVIDER
DACREF
DAC
GND
REF
REF_SEL
V
OUT
2631 TA01
Integral Nonlinearity (LTC2631A-LM12)
1.0
VCC = 3V
V
= 2.5V
FS
0.5
0
INL (LSB)
–0.5
–1.0
0
1024
2048
CODE
3072
4095
2631 TA01b
2631fb
1
LTC2631
ABSOLUTE MAXIMUM RATINGS
(Notes 1, 2)
Supply Voltage (VCC) ...................................–0.3V to 6V
REF_SEL, SCL, SDA .....................................–0.3V to 6V
, CA0, CA1, REF .........–0.3V to Min(V
V
OUT
+ 0.3V, 6V)
CC
Operating Temperature Range
LTC2631C ................................................0°C to 70°C
LTC2631I..............................................–40°C to 85°C
LTC2631H (Note 3) ............................ –40°C to 125°C
PIN CONFIGURATION
Maximum Junction Temperature........................... 150°C
Storage Temperature Range ................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec) ..................300°C
LTC2631-Z LTC2631-M
CA0 1
SCL 2
SDA 3
GND 4
T
JMAX
TOP VIEW
8 CA1
7 V
OUT
6 REF
5 V
CC
TS8 PACKAGE
8-LEAD PLASTIC TSOT-23
= 150°C (NOTE 6), θJA = 195°C/W
TOP VIEW
CA0 1
SCL 2
SDA 3
GND 4
TS8 PACKAGE
8-LEAD PLASTIC TSOT-23
T
= 150°C (NOTE 6), θJA = 195°C/W
JMAX
8 REF_SEL
7 V
OUT
6 REF
5 V
CC
2
2631fb
ORDER INFORMATION
LTC2631 A C TS8 –L M 12 #TRM PBF
LTC2631
LEAD FREE DESIGNATOR
TAPE AND REEL
TR = 2,500-Piece Tape and Reel
TRM = 500-Piece Tape and Reel
RESOLUTION
12 = 12-Bit
10 = 10-Bit
8 = 8-Bit
POWER-ON RESET
M = Reset to Mid-Scale
Z = Reset to Zero-Scale
FULL-SCALE VOLTAGE, INTERNAL REFERENCE MODE
L = 2.5V
H = 4.096V
PACKAGE TYPE
TS8 = 8-Lead Plastic TSOT-23
TEMPERATURE GRADE
C = Commercial Temperature Range (0°C to 70°C)
I = Industrial Temperature Range (–40°C to 85°C)
H = Automotive Temperature Range (–40°C to 125°C)
ELECTRICAL GRADE (OPTIONAL)
A = ±1LSB Maximum INL (12-Bit)
PRODUCT PART NUMBER
Consult LTC Marketing for information on non-standard lead based fi nish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifi cations, go to: http://www.linear.com/tapeandreel/
2631fb
3
LTC2631
PRODUCT SELECTION GUIDE
WITH INTERNAL
V
FS
PART NUMBER PART MARKING*
LTC2631A-LM12
LTC2631A-LZ12
LTC2631A-HM12
LTC2631A-HZ12
LTC2631-LM12
LTC2631-LM10
LTC2631-LM8
LTC2631-LZ12
LTC2631-LZ10
LTC2631-LZ8
LTC2631-HM12
LTC2631-HM10
LTC2631-HM8
LTC2631-HZ12
LTC2631-HZ10
LTC2631-HZ8
*The temperature grade is identifi ed by a label on the shipping container.
LT D H F
LT D H G
LT D H H
LT D H J
LT D H F
LT D H K
LT D H Q
LT D H G
LT D H M
LT D H R
LT D H H
LT D H N
LT D H S
LT D H J
LT D H P
LT D H T
REFERENCE
2.5V • (4095/4096)
2.5V • (4095/4096)
4.096V • (4095/4096)
4.096V • (4095/4096)
2.5V • (4095/4096)
2.5V • (1023/1024)
2.5V • (255/256)
2.5V • (4095/4096)
2.5V • (1023/1024)
2.5V • (255/256)
4.096V • (4095/4096)
4.096V • (1023/1024)
4.096V • (255/256)
4.096V • (4095/4096)
4.096V • (1023/1024)
4.096V • (255/256)
POWER-ON RESET
TO CODE PIN 8 RESOLUTION V
Mid-Scale
Zero
Mid-Scale
Zero
Mid-Scale
Mid-Scale
Mid-Scale
Zero
Zero
Zero
Mid-Scale
Mid-Scale
Mid-Scale
Zero
Zero
Zero
REF_SEL
CA1
REF_SEL
CA1
REF_SEL
REF_SEL
REF_SEL
CA1
CA1
CA1
REF_SEL
REF_SEL
REF_SEL
CA1
CA1
CA1
12-Bit
12-Bit
12-Bit
12-Bit
12-Bit
10-Bit
8-Bit
12-Bit
10-Bit
8-Bit
12-Bit
10-Bit
8-Bit
12-Bit
10-Bit
8-Bit
CC
2.7V – 5.5V
2.7V – 5.5V
4.5V – 5.5V
4.5V – 5.5V
2.7V – 5.5V
2.7V – 5.5V
2.7V – 5.5V
2.7V – 5.5V
2.7V – 5.5V
2.7V – 5.5V
4.5V – 5.5V
4.5V – 5.5V
4.5V – 5.5V
4.5V – 5.5V
4.5V – 5.5V
4.5V – 5.5V
MAXIMUM INL
±1LSB
±1LSB
±1LSB
±1LSB
±2.5LSB
±1LSB
±0.5LSB
±2.5LSB
±1LSB
±0.5LSB
±2.5LSB
±1LSB
±0.5LSB
±2.5LSB
±1LSB
±0.5LSB
4
2631fb
LTC2631
ELECTRICAL CHARACTERISTICS
The l denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
= 25°C. VCC = 2.7V to 5.5V, V
A
LTC2631-LM12/-LM10/-LM8/-LZ12/-LZ10/-LZ8, LTC2631A-LM12/-LZ12 (VFS = 2.5V)
LTC2631-8 LTC2631-10 LTC2631-12 LTC2631A-12
SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS
DC Performance
l
Resolution
Monotonicity V
DNL Differential
= 3V, Internal Ref. (Note 4)
CC
= 3V, Internal Ref. (Note 4)
V
CC
Nonlinearity
INL Integral
VCC = 3V, Internal Ref. (Note 4)
Nonlinearity
ZSE Zero-Scale Error V
= 3V, Internal Ref.,
CC
Code = 0
V
OS
Offset Error VCC = 3V, Internal Ref.
(Note 5)
V
OSTC
VOS Temperature
Coeffi cient
VCC = 3V, Internal Ref.
(Note 5)
FSE Full-Scale Error VCC = 3V, Internal Ref.
(Note 15)
V
FSTC
Full-Scale
Voltage
Temperature
Coeffi cient
VCC = 3V, Internal Ref. (Note 10)
C-Grade
I-Grade
H-Grade
Load Regulation Internal Ref., Mid-Scale,
V
= 3V ±10%,
CC
–5mA ≤ I
V
= 5V ±10%,
CC
–10mA ≤ I
R
OUT
DC Output
Impedance
Internal Ref., Mid-Scale,
V
= 3V ±10%,
CC
–5mA ≤ I
V
= 5V ±10%,
CC
–10mA ≤ I
OUT
OUT
OUT
OUT
≤ 5mA,
≤ 10mA
≤ 5mA,
≤ 10mA
8 10 12 12 Bits
l
8 10 12 12 Bits
l
l
l
l
±0.5 ±0.5 ±1 ±1 LSB
±0.05 ±0.5 ±0.2 ±1 ±1 ±2.5 ±0.5 ±1 LSB
0.5 5 0.5 5 0.5 5 0.5 5 mV
±0.5 ±5 ±0.5 ±5 ±0.5 ±5 ±0.5 ±5 mV
±10 ±10 ±10 ±10 µV/°C
l
±0.08 ±0.4 ±0.08 ±0.4 ±0.08 ±0.4 ±0.08 ±0.4 %FSR
±10
±10
±10
l
l
l
l
0.009
0.009
0.09
0.09
0.016
0.016
0.156
0.156
unloaded unless otherwise specifi ed.
OUT
±10
±10
±10
0.035
0.035
0.09
0.09
0.064
0.064
0.156
0.156
±10
±10
±10
0.14
0.14
0.09
0.09
0.256
0.256
0.156
0.156
±10
±10
±10
0.14
0.14
0.09
0.09
0.256
0.256
0.156
0.156
ppm/°C
ppm/°C
ppm/°C
LSB/mA
LSB/mA
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
OUT
DAC Output Span External Reference
PSR Power Supply Rejection V
I
SC
Short-Circuit Output Current (Note 6)
Sinking
Sourcing
Internal Reference
= 3V ±10% or 5V ±10% –80 dB
CC
VFS = VCC = 5.5V
Zero-Scale; V
Full-Scale; V
shorted to V
OUT
shorted to GND
OUT
CC
l
l
0 to V
0 to 2.5
27
–28
REF
48
–48
mA
mA
Power Supply
V
CC
I
CC
I
SD
Positive Supply Voltage For Specifi ed Performance
Supply Current (Note 7) VCC = 3V, V
V
= 3V, Internal Reference
CC
V
= 5V, V
CC
V
= 5V, Internal Reference
CC
Supply Current in Power-Down Mode
(Note 7)
VCC = 5V, C-Grade, I-Grade
V
= 5V, H-Grade
CC
= 2.5V, External Reference
REF
= 2.5V, External Reference
REF
l
2.7 5.5 V
l
l
l
l
l
l
150
180
160
190
0.6
0.6
200
240
210
260
1.8
4
µA
µA
µA
µA
µA
µA
2631fb
5
V
V
LTC2631
The l denotes the specifi cations which apply over the full operating
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifi cations are at T
= 25°C. VCC = 2.7V to 5.5V, V
A
unloaded unless otherwise specifi ed.
OUT
LTC2631-LM12/-LM10/-LM8/-LZ12/-LZ10/-LZ8, LTC2631A-LM12/-LZ12 (V
= 2.5V)
FS
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Reference Input
Input Voltage Range
Resistance
l
l
0V
CC
160 190 220 k
Capacitance 7.5 pF
I
REF
Reference Current, Power-Down Mode DAC Powered Down
l
0.005 0.1 µA
Reference Output
l
Output Voltage
1.240 1.250 1.260 V
Reference Temperature Coeffi cient ±10 ppm/°C
Output Impedance 0.5 k
Capacitive Load Driving 10 µF
Short-Circuit Current V
= 5.5V; REF Shorted to GND 2.5 mA
CC
Digital I/O
V
IL
V
IH
V
IL(CAn)
Low Level Input Voltage (SDA and SCL) (Note 14)
High Level Input Voltage (SDA and SCL) (Note 11)
Low Level Input Voltage on CAn
See Test Circuit 1
l
–0.5 0.3V
l
0.7V
CC
l
0.15V
CC
CC
(n = 0, 1)
V
IH(CAn)
High Level Input Voltage on CAn
See Test Circuit 1
l
0.85V
CC
(n = 0, 1)
R
INH
R
INL
R
INF
V
OL
t
OF
t
SP
Resistance from CAn (n = 0, 1)
to V
to Set CAn = V
CC
CC
Resistance from CAn (n = 0, 1)
to GND to Set CA
n
= GND
Resistance from CAn (n = 0, 1)
to V
or GND to Set CAn = Float
CC
See Test Circuit 2
See Test Circuit 2
See Test Circuit 2
Low Level Output Voltage Sink Current = 3mA
Output Fall Time VO = V
C
= 10pF to 400pF (Note 12)
B
IH(MIN)
to VO = V
Pulse Width of Spikes Suppressed by
IL(MAX)
,
l
l
l
l
l
l
10 k
10 k
2M
0 0.4 V
20 + 0.1C
B
250 ns
050ns
Input Filter
I
IN
C
IN
C
B
C
CA
n
Input Leakage 0.1VCC ≤ VIN ≤ 0.9V
I/O Pin Capacitance (Note 8)
Capacitive Load for Each Bus Line
External Capacitive Load on Address
CC
l
l
l
l
±1 µA
10 pF
400 pF
10 pF
Pin CAn (n = 0, 1)
V
V
V
V
V
6
2631fb
LTC2631
ELECTRICAL CHARACTERISTICS
The l denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
= 25°C. VCC = 2.7V to 5.5V, V
A
LTC2631-LM12/-LM10/-LM8/-LZ12/-LZ10/-LZ8, LTC2631A-LM12/-LZ12 (VFS = 2.5V)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
AC Performance
t
S
e
n
Settling Time VCC = 3V (Note 9)
Voltage-Output Slew Rate 1 V/µs
Capacitance Load Driving 500 pF
Glitch Impulse At Mid-Scale Transition 2.1 nV•s
Multiplying Bandwidth External Reference 300 kHz
Output Voltage Noise Density At f = 1kHz, External Reference
Output Voltage Noise 0.1Hz to 10Hz, External Reference
±0.39% (±1LSB at 8-Bits)
±0.098% (±1LSB at 10-Bits)
±0.024% (±1LSB at 12-Bits)
At f = 10kHz, External Reference
At f = 1kHz, Internal Reference
At f = 10kHz, Internal Reference
0.1Hz to 10Hz, Internal Reference
0.1Hz to 200kHz, External Reference
0.1Hz to 200kHz, Internal Reference,
C
= 0.33µF
REF
unloaded unless otherwise specifi ed.
OUT
3.2
3.8
4.1
140
130
160
150
20
20
650
670
nV√Hz
nV√Hz
nV√Hz
nV√Hz
µV
P-P
µV
P-P
µV
P-P
µV
P-P
µs
µs
µs
TIMING CHARACTERISTICS
The l denotes the specifi cations which apply over the full operating temperature
range, otherwise specifi cations are at TA = 25°C. VCC = 2.7V to 5.5V. (See Figure 1) (Note 13).
LTC2631-LM12/-LM10/-LM8/-LZ12/-LZ10/-LZ8, LTC2631A-LM12/-LZ12 (VFS = 2.5V)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
f
SCL
t
HD(STA)
t
LOW
t
HIGH
t
SU(STA)
t
HD(DAT)
t
SU(DAT)
t
r
t
f
t
SU(STO)
t
BUF
SCL Clock Frequency
Hold Time (Repeated) Start Condition
Low Period of the SCL Clock Pin
High Period of the SCL Clock Pin
Set-Up Time for a Repeated Start Condition
Data Hold Time
Data Set-Up Time
Rise Time of Both SDA and SCL Signals (Note 12)
Fall Time of Both SDA and SCL Signals (Note 12)
Set-Up Time for Stop Condition
Bus Free Time Between a Stop and Start Condition
l
l
l
l
l
l
l
l
l
l
l
0 400 kHz
0.6 µs
1.3 µs
0.6 µs
0.6 µs
0 0.9 µs
100 ns
20 + 0.1C
20 + 0.1C
B
B
0.6 µs
1.3 µs
300 ns
300 ns
2631fb
7
LTC2631
The l denotes the specifi cations which apply over the full operating
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifi cations are at T
= 25°C. VCC = 4.5V to 5.5V, V
A
unloaded unless otherwise specifi ed.
OUT
LTC2631-HM12/-HM10/-HM8/-HZ12/-HZ10/-HZ8, LTC2631A-HM12/-HZ12 (V
= 4.096V)
FS
LTC2631-8 LTC2631-10 LTC2631-12 LTC2631A-12
SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS
DC Performance
l
Resolution
Monotonicity V
DNL Differential
= 5V, Internal Ref. (Note 4)
CC
= 5V, Internal Ref. (Note 4)
V
CC
8 10 12 12 Bits
l
8 10 12 12 Bits
l
±0.5 ±0.5 ±1 ±1 LSB
Nonlinearity
INL Integral
VCC = 5V, Internal Ref. (Note 4)
l
±0.05 ±0.5 ±0.2 ±1 ±1 ±2.5 ±0.5 ±1 LSB
Nonlinearity
ZSE Zero-Scale Error V
V
V
OS
OSTC
Offset Error VCC = 5V, Internal Ref. (Note 5)
VOS Temperature
= 5V, Internal Ref., Code = 0
CC
VCC = 5V, Internal Ref. (Note 5) ±10 ±10 ±10 ±10 µV/°C
l
l
0.5 5 0.5 5 0.5 5 0.5 5 mV
±0.5 ±5 ±0.5 ±5 ±0.5 ±5 ±0.5 ±5 mV
Coeffi cient
FSE Full-Scale Error VCC = 5V, Internal Ref. (Note 15)
V
R
FSTC
OUT
Full-Scale
Voltage
Temperature
Coeffi cient
Load Regulation V
DC Output
Impedance
VCC = 5V, Internal Ref. (Note 10)
C-Grade
I-Grade
H-Grade
= 5V ±10%, Internal Ref.
CC
Mid-Scale, –10mA ≤ I
OUT
≤ 10mA
VCC = 5V ±10%, Internal Ref.
Mid-Scale, –10mA ≤ I
OUT
≤ 10mA
l
l
l
±0.08 ±0.4 ±0.08 ±0.4 ±0.08 ±0.4 ±0.08 ±0.4 %FSR
±10
±10
±10
±10
±10
±10
±10
±10
±10
±10
±10
±10
ppm/°C
ppm/°C
ppm/°C
0.006 0.01 0.022 0.04 0.09 0.16 0.09 0.16 LSB/mA
0.09 0.156 0.09 0.156 0.09 0.156 0.09 0.156
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
OUT
DAC Output Span External Reference
PSR Power Supply Rejection V
I
SC
Short-Circuit Output Current (Note 6)
Sinking
Sourcing
Internal Reference
= 5V ±10% –80 dB
CC
VFS = VCC = 5.5V
Zero-Scale; V
Full-Scale; V
shorted to V
OUT
shorted to GND
OUT
CC
l
l
0 to V
REF
0 to 4.096
27
–28
48
–48
mA
mA
Power Supply
V
CC
I
CC
I
SD
Positive Supply Voltage For Specifi ed Performance
Supply Current (Note 7) VCC = 5V, V
V
= 5V, Internal Reference
CC
Supply Current in Power-Down Mode
(Note 7)
VCC = 5V, C-Grade, I-Grade
V
= 5V, H-Grade
CC
= 4.096V, External Reference
REF
l
4.5 5.5 V
l
l
l
l
160
200
0.6
0.6
220
270
1.8
4
µA
µA
µA
µA
2631fb
V
V
8
LTC2631
ELECTRICAL CHARACTERISTICS
The l denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
= 25°C. VCC = 4.5V to 5.5V, V
A
unloaded unless otherwise specifi ed.
OUT
LTC2631-HM12/-HM10/-HM8/-HZ12/-HZ10/-HZ8, LTC2631A-HM12/-HZ12 (V
= 4.096V)
FS
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Reference Input
Input Voltage Range
Resistance
l
l
0V
CC
160 190 220 k
Capacitance 7.5 pF
I
REF
Reference Current, Power-Down Mode DAC Powered Down
l
0.005 0.1 µA
Reference Output
l
Output Voltage
2.032 2.048 2.064 V
Reference Temperature Coeffi cient ±10 ppm/°C
Output Impedance 0.5 k
Capacitive Load Driving 10 µF
Short-Circuit Current V
= 5.5V; REF Shorted to GND 4.3 mA
CC
Digital I/O
V
IL
V
IH
V
IL(CAn)
Low Level Input Voltage (SDA and SCL) (Note 14)
High Level Input Voltage (SDA and SCL) (Note 11)
Low Level Input Voltage on CAn
See Test Circuit 1
l
–0.5 0.3V
l
0.7V
CC
l
0.15V
CC
CC
(n = 0, 1)
V
IH(CAn)
High Level Input Voltage on CAn
See Test Circuit 1
l
0.85V
CC
(n = 0, 1)
R
INH
R
INL
R
INF
V
OL
t
OF
t
SP
Resistance from CAn (n = 0, 1)
to V
to Set CAn = V
CC
CC
Resistance from CAn (n = 0, 1)
to GND to Set CA
n
= GND
Resistance from CAn (n = 0, 1)
to V
or GND to Set CAn = Float
CC
See Test Circuit 2
See Test Circuit 2
See Test Circuit 2
Low Level Output Voltage Sink Current = 3mA
Output Fall Time VO = V
C
= 10pF to 400pF (Note 12)
B
IH(MIN)
to VO = V
Pulse Width of Spikes Suppressed by
IL(MAX)
,
l
l
l
l
l
l
10 k
10 k
2M
0 0.4 V
20 + 0.1C
B
250 ns
050ns
Input Filter
I
IN
C
IN
C
B
C
CA
n
Input Leakage 0.1VCC ≤ VIN ≤ 0.9V
I/O Pin Capacitance (Note 8)
Capacitive Load for Each Bus Line
External Capacitive Load on Address
Pin CA
n
(n = 0, 1)
CC
l
l
l
l
±1 µA
10 pF
400 pF
10 pF
V
V
V
V
V
2631fb
9
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