Output Current (Note 3) ..................................... ± 10mA
ENABLE
Voltage ....................... V
SS
– 0.3V to V
SS
+ 12V
OUT RTN Voltage ............................... V
SS
– 0.3V to V
DD
Operating Temperature Range (Note 4)
LTC1966C/LTC1966I ............................–40°C to 85°C
LTC1966H .......................................... –40°C to 125°C
LTC1966MP ....................................... –55°C to 125°C
Specified Temperature Range (Note 5)
LTC1966C/LTC1966I ............................–40°C to 85°C
LTC1966H .......................................... –40°C to 125°C
LTC1966MP ....................................... –55°C to 125°C
Maximum Junction Temperature ......................... 150°C
Storage Temperature Range ................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
TOP VIEW
GND
IN1
IN2
V
SS
1
2
3
4
8
7
6
5
ENABLE
V
DD
OUT RTN
V
OUT
MS8 PACKAGE
8-LEAD PLASTIC MSOP
T
JMAX
= 150°C,
θ
JA
= 220°C/W
orDer inForMaTion
LEAD FREE FINISH
LTC1966CMS8#PBF
LTC1966IMS8#PBF
LTC1966HMS8#PBF
LTC1966MPMS8#PBF
TAPE AND REEL
LTC1966CMS8#TRPBF
LTC1966IMS8#TRPBF
LTC1966HMS8#TRPBF
LTC1966MPMS8#TRPBF
PART MARKING*
LTTG
LTTH
LTTG
LTTG
PACKAGE DESCRIPTION
8-Lead Plastic MSOP
8-Lead Plastic MSOP
8-Lead Plastic MSOP
8-Lead Plastic MSOP
TEMPERATURE RANGE
0°C to 70°C
–40°C to 85°C
–40°C to 125°C
–55°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to:
http://www.linear.com/tapeandreel/
elecTrical characTerisTics
SYMBOL PARAMETER
Conversion Accuracy
G
ERR
V
OOS
LIN
ERR
Conversion Gain Error
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
DD
= 5V, V
SS
= – 5V, V
OUTRTN
= 0V, C
AVE
= 10µF V
IN
= 200mV
RMS
,
,
V
ENABLE
= 0.5V unless otherwise noted.
CONDITIONS
50Hz to 1kHz Input (Notes 6, 7)
LTC1966C, LTC1966I
LTC1966H, LTC1966MP
(Notes 6, 7)
LTC1966C, LTC1966I
LTC1966H, LTC1966MP
50mV to 350mV (Notes 7, 8)
MIN
TYP
±0.1
l
l
MAX
±0.3
±0.4
±0.7
0.2
0.4
0.6
0.15
UNITS
%
%
%
mV
mV
mV
%
Output Offset Voltage
0.1
l
l
l
Linearity Error
0.02
1966fb
2
LTC1966
elecTrical characTerisTics
SYMBOL PARAMETER
PSRR
Power Supply Rejection
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
DD
= 5V, V
SS
= – 5V, V
OUTRTN
= 0V, C
AVE
= 10µF V
IN
= 200mV
RMS
,
,
V
ENABLE
= 0.5V unless otherwise noted.
CONDITIONS
(Note 9)
LTC1966C, LTC1966I
LTC1966H, LTC1966MP
(Notes 6, 7, 10)
l
l
l
MIN
TYP
0.02
MAX
0.15
0.20
0.3
0.8
1.0
2
30
V
DD
UNITS
%V
%V
%V
mV
mV
mV
mV
V
MΩ
MΩ
V
IOS
Input Offset Voltage
0.02
Accuracy vs Crest Factor (CF)
CF = 4
CF = 5
Input Characteristics
I
VR
Z
IN
CMRRI
V
IMAX
V
IMIN
PSRRI
Input Voltage Range
Input Impedance
Input Common Mode Rejection
Maximum Input Swing
Minimum RMS Input
Power Supply Rejection
V
DD
Supply (Note 9)
V
SS
Supply (Note 9)
(Note 14)
Average, Differential (Note 12)
Average, Common Mode (Note 12)
(Note 13)
Accuracy = 1% (Note 14)
l
l
l
l
l
l
60Hz Fundamental, 200mV
RMS
(Note 11)
60Hz Fundamental, 200mV
RMS
(Note 11)
l
l
–1
–20
V
SS
8
100
7
1
1.05
200
5
µV/V
V
mV
µV/V
µV/V
V
kΩ
kΩ
µV/V
V
V
250
120
V
SS
75
85
30
16
1.0
0.9
1.05
250
50
6
20
800
600
300
V
DD
95
200
Output Characteristics
OVR
Z
OUT
CMRRO
V
OMAX
PSRRO
Output Voltage Range
Output Impedance
Output Common Mode Rejection
Maximum Differential Output Swing
Power Supply Rejection
V
ENABLE
= 0.5V (Note 12)
V
ENABLE
= 4.5V
(Note 13)
Accuracy = 2%, DC Input (Note 14)
l
l
l
l
V
DD
Supply (Note 9)
V
SS
Supply (Note 9)
C
AVE
= 10µF
C
AVE
= 10µF
l
l
1000
500
µV/V
µV/V
kHz
kHz
kHz
Frequency Response
f
1P
f
10P
f
– 3dB
V
DD
V
SS
I
DD
I
SS
I
DDS
I
SSS
I
IH
1% Additional Error (Note 15)
10% Additional Error (Note 15)
±3dB Frequency (Note 15)
Positive Supply Voltage
Negative Supply Voltage
Positive Supply Current
Negative Supply Current
Supply Currents
Supply Currents
ENABLE
Pin Current High
(Note 16)
IN1 = 20mV, IN2 = 0V
IN1 = 200mV, IN2 = 0V
IN1 = 20mV, IN2 = 0V
V
ENABLE
= 4.5V
V
ENABLE
= 4.5V
LTC1966H, LTC1966MP
V
ENABLE
= 4.5V
l
l
l
l
Power Supplies
2.7
–5.5
155
158
12
0.5
–1
–2
–0.3
–0.1
–0.05
5.5
0
170
20
10
V
V
µA
µA
µA
µA
µA
µA
µA
Shutdown Characteristics
l
l
l
l
1966fb
3
LTC1966
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
DD
= 5V, V
SS
= – 5V, V
OUTRTN
= 0V, C
AVE
= 10µF V
IN
= 200mV
RMS
,
,
V
ENABLE
= 0.5V unless otherwise noted.
SYMBOL PARAMETER
I
IL
V
TH
V
HYS
ENABLE
Pin Current Low
ENABLE
Threshold Voltage
CONDITIONS
V
ENABLE
= 0.5V
LTC1966H, LTC1966MP
V
DD
= 5V, V
SS
= –5V
V
DD
= 5V, V
SS
= GND
V
DD
= 2.7V, V
SS
= GND
l
l
elecTrical characTerisTics
MIN
–2
–10
TYP
–1
2.4
2.1
1.3
0.1
MAX
–0.1
UNITS
µA
µA
V
V
V
V
ENABLE
Threshold Hysteresis
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2:
The inputs (IN1, IN2) are protected by shunt diodes to V
SS
and
V
DD
. If the inputs are driven beyond the rails, the current should be limited
to less than 10mA.
Note 3:
The LTC1966 output (V
OUT
) is high impedance and can be
overdriven, either sinking or sourcing current, to the limits stated.
Note 4:
The LTC1966C/LTC1966I are guaranteed functional over
the operating temperature range of – 40°C to 85°C. The LTC1966H/
LTC1966MP are guaranteed functional over the operating temperature
range of –55°C to 125°C.
Note 5:
The LTC1966C is guaranteed to meet specified performance from
0°C to 70°C. The LTC1966C is designed, characterized and expected to
meet specified performance from –40°C to 85°C but is not tested nor
QA sampled at these temperatures. The LTC1966I is guaranteed to meet
specified performance from –40°C to 85°C. The LTC1966H is guaranteed
to meet specified performance from –40°C to 125°C. The LTC1966MP is
guaranteed to meet specified performance from –55°C to 125°C.
Note 6:
High speed automatic testing cannot be performed with
C
AVE
= 10µF The LTC1966 is 100% tested with C
AVE
= 22nF Correlation
.
.
tests have shown that the performance limits above can be guaranteed
with the additional testing being performed to guarantee proper operation
of all the internal circuitry.
Note 7:
High speed automatic testing cannot be performed with 60Hz
inputs. The LTC1966 is 100% tested with DC and 10kHz input signals.
Measurements with DC inputs from 50mV to 350mV are used to calculate
the four parameters: G
ERR
, V
OOS
, V
IOS
and linearity error. Correlation tests
have shown that the performance limits above can be guaranteed with the
additional testing being performed to guarantee proper operation of all
internal circuitry.
Note 8:
The LTC1966 is inherently very linear. Unlike older log/antilog
circuits, its behavior is the same with DC and AC inputs, and DC inputs are
used for high speed testing.
Note 9:
The power supply rejections of the LTC1966 are measured with DC
inputs from 50mV to 350mV. The change in accuracy from V
DD
= 2.7V to
V
DD
= 5.5V with V
SS
= 0V is divided by 2.8V. The change in accuracy from
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Embedded System
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