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LTC1199LIMS8#TRPBF

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1
LTC1197/LTC1197L
LTC1199/LTC1199L
10-Bit, 500ksps ADCs in
MSOP with Auto Shutdown
Single 2.7V Supply, 250ksps, 10-Bit Sampling ADC
Supply Current vs Sampling Frequency
SAMPLING FREQUENCY (kHz)
0.01
SUPPLY CURRENT (µA)
100
1000
10000
100
1197/99 G03
10
1
0.1
0.1
1
10
1000
V
CC
= 5V
f
CLK
= 7.2MHz
V
CC
= 2.7V
f
CLK
= 3.5MHz
1
2
3
4
8
7
6
5
CS
+IN
–IN
GND
V
CC
CLK
D
OUT
V
REF
LTC1197L
1197/99 TA01
ANALOG INPUT
0V TO 2.7V RANGE
2.7V
1µF
SERIAL DATA LINK TO
ASIC, PLD, MPU, DSP
OR SHIFT REGISTERS
The LTC
®
1197/LTC1197L/LTC1199/LTC1199L are
10-bit A/D converters with sampling rates up to 500kHz.
They have 2.7V (L) and 5V versions and are offered in
8-pin MSOP and SO packages. Power dissipation is typi-
cally only 2.2mW at 2.7V (25mW at 5V) during full speed
operation. The automatic power down reduces supply
current linearly as sample rate is reduced. These 10-bit,
switched-capacitor, successive approximation ADCs in-
clude a sample-and-hold. The LTC1197/LTC1197L have a
differential analog input with an adjustable reference pin.
The LTC1199/LTC1199L offer a software-selectable
2-channel MUX.
The 3-wire serial I/O, MSOP and SO-8 packages, 2.7V
operation and extremely high sample rate-to-power ratio
make these ADCs ideal choices for compact, low power
high speed systems.
These circuits can be used in ratiometric applications or
with external references. The high impedance analog
inputs and the ability to operate with reduced spans below
1V full scale (LTC1197/LTC1197L) allow direct connec-
tion to signal sources in many applications, eliminating
the need for gain stages.
■
8-Pin MSOP and SO Packages
■
10-Bit Resolution at 500ksps
■
Single Supply: 5V or 3V
■
Low Power at Full Speed:
25mW Typ at 5V
2.2mW Typ at 2.7V
■
Auto Shutdown Reduces Power Linearly
at Lower Sample Rates
■
10-Bit Upgrade to 8-Bit LTC1196/LTC1198
■
SPI and MICROWIRE
TM
Compatible Serial I/O
■
Low Cost
, LTC and LT are registered trademarks of Linear Technology Corporation.
MICROWIRE is a trademark of National Semiconductor Corporation.
■
High Speed Data Acquisition
■
Portable or Compact Instrumentation
■
Low Power or Battery-Operated Instrumentation
FEATURES
DESCRIPTIO
U
APPLICATIO S
U
TYPICAL APPLICATIO
U
2
LTC1197/LTC1197L
LTC1199/LTC1199L
Operating Temperature Range
LTC1197C/LTC1197LC
LTC1199C/LTC1199LC........................... 0°C to 70°C
LTC1197I/LTC1197LI
LTC1199I/LTC1199LI ........................ –45°C to 85°C
Lead Temperature (Soldering, 10 sec)................. 300°C
Supply Voltage (V
CC
) ............................................... 12V
Voltage
Analog Input ..................... GND – 0.3V to V
CC
+ 0.3V
Digital Input ................................ GND – 0.3V to 12V
Digital Output ....................GND – 0.3V to V
CC
+ 0.3V
Power Dissipation.............................................. 500mW
Storage Temperature Range ................. –65°C to 150°C
(Notes 1, 2)
LTC1197 LTC1199
SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
V
CC
Supply Voltage 4 9 4 6 V
V
CC
= 5V Operation
f
CLK
Clock Frequency ● 0.05 7.2 0.05 7.2 MHz
t
CYC
Total Cycle Time 14 16 CLK
t
SMPL
Analog Input Sampling Time 1.5 1.5 CLK
t
hCS
Hold Time CS Low After Last CLK↑ 13 13 ns
ORDER PART
NUMBER
MS8 PART MARKING S8 PART MARKING
1197L
1197LI
1197
1197I
LTC1197CS8
LTC1197IS8
LTC1197LCS8
LTC1197LIS8
ORDER PART
NUMBER
LTC1197CMS8
LTC1197IMS8
LTC1197LCMS8
LTC1197LIMS8
LTBL
LTJA
T
JMAX
= 150°C, θ
JA
= 175°C/W
1
2
3
4
8
7
6
5
TOP VIEW
S8 PACKAGE
8-LEAD PLASTIC SO
CS
+IN
–IN
GND
V
CC
CLK
D
OUT
V
REF
ORDER PART
NUMBER
MS8 PART MARKING S8 PART MARKING
1199L
1199LI
1199
1199I
LTC1199CS8
LTC1199IS8
LTC1199LCS8
LTC1199LIS8
ORDER PART
NUMBER
LTC1199CMS8
LTC1199IMS8
LTC1199LCMS8
LTC1199LIMS8
LTCM
LTWC
T
JMAX
= 150°C, θ
JA
= 210°C/W
1
2
3
4
CS
+IN
–IN
GND
8
7
6
5
V
CC
CLK
D
OUT
V
REF
TOP VIEW
MS8 PACKAGE
8-LEAD PLASTIC MSOP
1
2
3
4
CS
CH0
CH1
GND
8
7
6
5
V
CC
CLK
D
OUT
D
IN
TOP VIEW
MS8 PACKAGE
8-LEAD PLASTIC MSOP
T
JMAX
= 150°C, θ
JA
= 210°C/W
T
JMAX
= 150°C, θ
JA
= 175°C/W
1
2
3
4
8
7
6
5
TOP VIEW
S8 PACKAGE
8-LEAD PLASTIC SO
CS
CH0
CH1
GND
V
CC
CLK
D
OUT
D
IN
ABSOLUTE AXI U RATI GS
WWWU
PACKAGE/ORDER I FOR ATIO
UU
W
LTKV
LTKW
LTFL
LTWB
Consult factory for parts specified with wider operating temperature ranges.
RECO E DED OPERATI G CO DITIO S
UUUUWW
The ● denotes the specifications which apply over
the full operating temperature range, otherwise specifications are at T
A
= 25°C.
3
LTC1197/LTC1197L
LTC1199/LTC1199L
LTC1197 LTC1199
SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
V
CC
= 5V Operation
t
suCS
Setup Time CS↓ Before First CLK↑ 26 26 ns
(See Figures 1, 2)
t
hDI
Hold Time D
IN
After CLK↑ LTC1199 26 ns
t
suDI
Setup Time D
IN
Stable Before CLK↑ LTC1199 26 ns
t
WHCLK
CLK High Time f
CLK
= f
CLK(MAX)
40% 40% 1/f
CLK
t
WLCLK
CLK Low Time f
CLK
= f
CLK(MAX)
40% 40% 1/f
CLK
t
WHCS
CS High Time Between Data Transfer Cycles 32 32 ns
t
WLCS
CS Low Time During Data Transfer 13 15 CLK
The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T
A
= 25°C.
V
CC
= 5V, V
REF
= 5V, f
CLK
= f
CLK(MAX)
as defined in Recommended Operating Conditions, unless otherwise noted.
–0.05V to V
CC
+ 0.05V
LTC1197 LTC1199
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
Offset Error ● ±2 ±2 LSB
Linearity Error (Note 3) ● ±1 ±1 LSB
Gain Error ● ±4 ±4 LSB
No Missing Codes Resolution ● 10 10 Bits
Analog Input Range V
Reference Input Range LTC1197, V
CC
≤ 6V 0.2 V
CC
+ 0.05V V
LTC1197, V
CC
> 6V 0.2 6 V
Analog Input Leakage Current (Note 4) ● ±1 ±1 µA
LTC1197L LTC1199L
SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
V
CC
Supply Voltage 2.7 4 2.7 4 V
V
CC
= 2.7V Operation
f
CLK
Clock Frequency ● 0.01 3.5 0.01 3.5 MHz
t
CYC
Total Cycle Time 14 16 CLK
t
SMPL
Analog Input Sampling Time 1.5 1.5 CLK
t
hCS
Hold Time CS Low After Last CLK↑ 40 40 ns
t
suCS
Setup Time CS↓ Before First CLK↑ 78 78 ns
(See Figures 1, 2)
t
hDI
Hold Time D
IN
After CLK↑ LTC1199L 78 ns
t
suDI
Setup Time D
IN
Stable Before CLK↑ LTC1199L 78 ns
t
WHCLK
CLK High Time f
CLK
= f
CLK(MAX)
40% 40% 1/f
CLK
t
WLCLK
CLK Low Time f
CLK
= f
CLK(MAX)
40% 40% 1/f
CLK
t
WHCS
CS High Time Between Data Transfer Cycles 96 96 ns
t
WLCS
CS Low Time During Data Transfer 13 15 CLK
The ● denotes the specifications which apply over
the full operating temperature range, otherwise specifications are at T
A
= 25°C.
RECO E DED OPERATI G CO DITIO S
UUUUWW
CO VERTER A D ULTIPLEXER CHARACTERISTICS
U
W
U
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LTC1199LIMS8#TRPBF

Mfr. #:
Buy LTC1199LIMS8#TRPBF
Manufacturer:
Analog Devices Inc.
Description:
Analog to Digital Converters - ADC 210ksps 2/Ch input 3V,10-Bit ADC
Lifecycle:
New from this manufacturer.
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