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LTC6605CDJC-10#PBF

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LTC6605-10
1
660510f
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
Dual Matched 10MHz Filter
with Low Noise, Low Distortion
Differential Amplifi er
The LTC
®
6605-10 contains two independent, fully differ-
ential amplifi ers confi gured as matched 2nd order 10MHz
lowpass fi lters. The f
–3dB
of the fi lters is adjustable in the
range of 9.7MHz to 14MHz.
The internal op amps are fully differential, feature very
low noise and distortion, and are compatible with 16-bit
dynamic range systems. The inputs can accept single-
ended or differential signals. An input pin is provided
for each amplifi er to set the common mode level of the
differential outputs.
Internal laser-trimmed resistors and capacitors determine
a precise, very well matched (in gain and phase) 10MHz
2nd order fi lter response. A single optional external re-
sistor per channel can tailor the frequency response for
each amplifi er.
Three-state BIAS pins determine each amplifi er’s power
consumption, allowing a choice between shutdown, me-
dium power or full power.
The LTC6605-10 is available in a compact 6mm × 3mm
22-pin leadless DFN package and operates over a –40°C
to 85°C temperature range.
Dual, Matched 9.7MHz Lowpass Filter
n
Two Matched 10MHz 2nd Order Lowpass Filters
with Differential Amplifi ers
Gain Match: ±0.35dB Max, Passband
Phase Match: ±1.2° Max, Passband
Single-Ended or Differential Inputs
n
< –90dBc Distortion in Passband
n
2.1nV/√Hz Op Amp Noise Density
n
Pin-Selectable Gain (0dB/12dB/14dB)
n
Pin-Selectable Power Consumption (0.35mA/
16.2mA/33.1mA)
n
Rail-to-Rail Output Swing
Adjustable Output Common Mode Voltage Control
Buffered, Low Impedance Outputs
n
2.7V to 5.25V Supply Voltage
n
Small 22-Pin 6mm × 3mm × 0.75mm DFN Package
n
Broadband Wireless ADC Driver/Filter
n
Antialiasing Filter
n
Single-Ended to Differential Conversion
n
DAC Smoothing Filter
n
Zero-IF Direct Conversion Receivers
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
Channel to Channel Phase Matching
660510 TA01
LTC6605-10
3V
0.1μF
0.1μF
0.1μF
0.1μF
–
+
21
19
17
V
OUTA
V
INA
3V
+
–
+
–
22
18
3V
–
+
15
14
13
16
12
2
3
4
6
V
INB
3V
+
–
V
OUTB
+
–
1
5
8
9
10
7
11
20
PHASE MATCH (DEG)
NUMBER OF UNITS
0
20
120
60
–1.0
0 0.6 0.80.40.2 1.0
660510 TA01b
80
100
40
–0.6 –0.2–0.4–0.8
352 TYPICAL UNITS
T
A
= 25°C
f
IN
= 10MHz
LTC6605-10
2
660510f
DC ELECTRICAL CHARACTERISTICS
PIN CONFIGURATION ABSOLUTE MAXIMUM RATINGS
Total Supply Voltage (V
+
to V
–
) ................................5.5V
Input Current (Note 2) ..........................................±10mA
Output Short-Circuit Duration (Note 3) ............ Indefi nite
Operating Temperature Range (Note 4).... –40°C to 85°C
Specifi ed Temperature Range (Note 5) .... –40°C to 85°C
Junction Temperature ........................................... 150°C
Storage Temperature Range ................... –65°C to 150°C
(Note 1)
22
21
20
19
18
17
16
15
14
13
12
1
2
3
4
5
6
7
8
9
10
11
–OUT A
V
+
A
V
–
V
OCMA
+OUT A
V
–
–OUT B
V
+
B
V
–
V
OCMB
+OUT B
+IN4 A
+IN1 A
BIAS A
–IN1 A
–IN4 A
V
–
+IN4 B
+IN1 B
BIAS B
–IN1 B
–IN4 B
TOP VIEW
23
DJC PACKAGE
22-LEAD (6mm × 3mm) PLASTIC DFN
T
JMAX
= 150°C, θ
JA
= 46.5°C/W
EXPOSED PAD (PIN 23) IS V
–
, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC6605CDJC-10#PBF LTC6605CDJC-10#TRPBF 660510 22-Lead (6mm × 3mm) Plastic DFN 0°C to 70°C
LTC6605IDJC-10#PBF LTC6605IDJC-10#TRPBF 660510 22-Lead (6mm × 3mm) Plastic DFN –40°C to 85°C
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi ed by a label on the shipping container.
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/
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
OS
Differential Offset Voltage (at Op Amp
Inputs) (Note 6)
V
S
= 2.7V to 5V
l
±0.25 ±1 mV
ΔV
OS
/ΔT Differential Offset Voltage Drift (at Op
Amp Inputs)
BIAS = V
+
BIAS = Floating
l
l
±1
±1
μV/°C
μV/°C
I
B
Input Bias Current (at Op Amp Inputs)
(Note 7)
BIAS = V
+
BIAS = Floating
l
l
–60
–30
–25
–12.5
0
0
μA
μA
I
OS
Input Offset Current
(at Op Amp Inputs) (Note 7)
±1 μA
The l denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. V
+
= 3V, V
–
= 0V, V
INCM
= V
OCM
= mid-supply, BIAS tied to V
+
, R
L
= Open,
R
BAL
= 10k. The fi lter is confi gured for a gain of 1, unless otherwise noted. V
S
is defi ned as (V
+
– V
–
). V
OUTCM
is defi ned as (V
+OUT
+
V
–OUT
)/2. V
INCM
is defi ned as (V
INP
+ V
INM
)/2. V
OUTDIFF
is defi ned as (V
+OUT
– V
–OUT
). V
INDIFF
is defi ned as (V
INP
– V
INM
). See Figure 1.
LTC6605-10
3
660510f
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
INCM
Input Common Mode Voltage Range
(Note 8)
V
S
= 3V
V
S
= 5V
l
l
–0.2
–0.2
1.7
4.7
V
V
CMRR Common Mode Rejection Ratio
(ΔV
INCM
/ΔV
OS
) (Note 9)
V
S
= 3V; ΔV
INCM
= 1.5V
V
S
= 5V; ΔV
INCM
= 2.5V
l
l
46
46
74
74
dB
dB
PSRR Power Supply Rejection Ratio
(ΔV
S
/ΔV
OS
) (Note 10)
V
S
= 2.7V to 5V
l
66 95 dB
V
OSCM
Common Mode Offset Voltage
(V
OUTCM
– V
OCM
)
V
S
= 3V
V
S
= 5V
l
l
±10
±10
±15
±15
mV
mV
V
OCM
Output Common Mode Range
(Valid Range for V
OCM
Pin) (Note 8)
V
S
= 3V
V
S
= 5V
l
l
1.1
1.1
2
4
V
V
V
MID
Self-Biased Voltage at the V
OCM
Pin V
S
= 3V
l
1.475 1.5 1.525 V
R
VOCM
Input Resistance of V
OCM
Pin
l
12.5 18 23.5 kΩ
V
OUT
Output Voltage Swing, High
(Measured Relative to V
+
)
V
S
= 3V; I
L
= 0mA
V
S
= 3V; I
L
= 5mA
V
S
= 3V; I
L
= 20mA
l
l
l
245
285
415
450
525
750
mV
mV
mV
V
S
= 5V; I
L
= 0mA
V
S
= 5V; I
L
= 5mA
V
S
= 5V; I
L
= 20mA
l
l
l
350
390
550
625
700
1000
mV
mV
mV
Output Voltage Swing, Low
(Measured Relative to V
–
)
V
S
= 3V; I
L
= 0mA
V
S
= 3V; I
L
= –5mA
V
S
= 3V; I
L
= –20mA
l
l
l
120
135
195
225
250
350
mV
mV
mV
V
S
= 5V; I
L
= 0mA
V
S
= 5V; I
L
= –5mA
V
S
= 5V; I
L
= –20mA
l
l
l
175
200
270
325
360
475
mV
mV
mV
I
SC
Output Short-Circuit Current (Note 3) V
S
= 3V
V
S
= 5V
l
l
±40
±50
±70
±95
mA
mA
V
S
Supply Voltage
l
2.7 5.25 V
I
S
Supply Current (per Channel) V
S
= 2.7V to 5V; BIAS = V
+
V
S
= 2.7V to 5V; BIAS = Floating
V
S
= 2.7V to 5V; BIAS = V
–
l
l
l
33.1
16.2
0.35
45
26.5
1.6
mA
mA
mA
BIAS Pin Range for Shutdown Referenced to V
–
l
00.4V
BIAS Pin Range for Medium Power Referenced to V
–
l
11.5V
BIAS Pin Range for Full Power Referenced to V
–
l
2.3 V
S
V
BIAS Pin Self-Biased Voltage (Floating) Referenced to V
–
l
1.05 1.15 1.25 V
R
BIAS
BIAS Pin Input Resistance
l
100 150 200 kΩ
t
ON
Turn-On Time V
S
= 3V, V
BIAS
= V
–
to V
+
400 ns
t
OFF
Turn-Off Time V
S
= 3V, V
BIAS
= V
+
to V
–
400 ns
DC ELECTRICAL CHARACTERISTICS
The l denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. V
+
= 3V, V
–
= 0V, V
INCM
= V
OCM
= mid-supply, BIAS tied to V
+
, R
L
= Open,
R
BAL
= 10k. The fi lter is confi gured for a gain of 1, unless otherwise noted. V
S
is defi ned as (V
+
– V
–
). V
OUTCM
is defi ned as (V
+OUT
+
V
–OUT
)/2. V
INCM
is defi ned as (V
INP
+ V
INM
)/2. V
OUTDIFF
is defi ned as (V
+OUT
– V
–OUT
). V
INDIFF
is defi ned as (V
INP
– V
INM
). See Figure 1.
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LTC6605CDJC-10#PBF

Mfr. #:
Buy LTC6605CDJC-10#PBF
Manufacturer:
Analog Devices Inc.
Description:
Differential Amplifiers 2x Matched 10MHz Filt w/ L N, L Dist Dif
Lifecycle:
New from this manufacturer.
Delivery:
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